CARIES- http://in.youtube.com/watch?v=ft2SVyEs2SY&feature=related
EARLY CHILDHOOD CARIES/BABY BOTTLE TOOTH DECAY
http://in.youtube.com/watch?v=-DgsE3RMPco&feature=related
CARIES REMOVAL USING LASER TECHNIQUE
http://in.youtube.com/watch?v=5IJbNOc36-Q&feature=related
DENTAL LASER SURGERY WITH NO NEEDLES, NO SUTURES, NO BLEEDING
http://in.youtube.com/watch?v=3ZHSdxyMCZk&feature=related
LASER DENTAL CLEANING
http://in.youtube.com/watch?v=4LRZRT4mHXk
ORAL LASER JET
http://in.youtube.com/watch?v=JFqSvmlvkW0&NR=1
FLOSSING METHOD
http://in.youtube.com/watch?v=e3ZAj-fXKMY&feature=related
BRUSHING & FLOSSING VIDEO
http://in.youtube.com/watch?v=eGmcAwMYEZ8&feature=related
Monday, September 29, 2008
Saturday, September 27, 2008
PERIODONTAL DISEASE
Periodontal (gum) diseases, including gingivitis and periodontitis, are serious infections that, left untreated, can lead to tooth loss.
The word periodontal literally means "around the tooth."
Periodontal disease is a chronic bacterial infection that affects the gums and bone supporting the teeth.
Periodontal disease can affect one tooth or many teeth.
It begins when the bacteria in plaque (the sticky, colorless film that constantly forms on your teeth) causes the gums to become inflamed.
GINGIVITIS:
Gingivitis is the mildest form of periodontal disease.
It causes the gums to become red, swollen, and bleed easily.
There is usually little or no discomfort at this stage.
Gingivitis is often caused by inadequate oral hygiene.
Gingivitis is reversible with professional treatment and good oral home care.
PERIODONTITIS:
Untreated gingivitis can advance to periodontitis.
With time, plaque can spread and grow below the gum line.
Toxins produced by the bacteria in plaque irritate the gums.
The toxins stimulate a chronic inflammatory response in which the body in essence turns on itself, and the tissues and bone that support the teeth are broken down and destroyed.
Gums separate from the teeth, forming pockets (spaces between the teeth and gums) that become infected.
As the disease progresses, the pockets deepen and more gum tissue and bone are destroyed. Often, this destructive process has very mild symptoms.
Eventually, teeth can become loose and may have to be removed.
Untreated gingivitis can advance to periodontitis and eventually lead to tooth loss and other health problems.
PREVENTION:
Daily oral hygiene measures to prevent periodontal disease include:
Brushing properly on a regular basis (at least twice daily), with the patient attempting to direct the toothbrush bristles underneath the gum-line, so as to help disrupt the bacterial growth and formation of subgingival plaque.
Flossing daily and using interdental brushes (if there is a sufficiently large space between teeth), as well as cleaning behind the last tooth in each quarter.
Daily oral hygiene measures to prevent periodontal disease include:
Brushing properly on a regular basis (at least twice daily), with the patient attempting to direct the toothbrush bristles underneath the gum-line, so as to help disrupt the bacterial growth and formation of subgingival plaque.
Flossing daily and using interdental brushes (if there is a sufficiently large space between teeth), as well as cleaning behind the last tooth in each quarter.
TREATMENT & CARE:
Using an antiseptic mouthwash - Chlorhexidine gluconate based mouthwash or hydrogen peroxidei n combination with careful oral hygiene may cure gingivitis, although they cannot reverse any attachment loss due to periodontitis.
Regular dental check-ups and professional teeth cleaning as required.
Using an antiseptic mouthwash - Chlorhexidine gluconate based mouthwash or hydrogen peroxidei n combination with careful oral hygiene may cure gingivitis, although they cannot reverse any attachment loss due to periodontitis.
Regular dental check-ups and professional teeth cleaning as required.
Dental check-ups serve to monitor the person's oral hygiene methods and levels of attachment around teeth, identify any early signs of periodontitis, and monitor response to treatment.
Typically dental hygienists (or dentists) use special instruments to clean (debride) teeth below the gumline and disrupt any plaque growing below the gumline.
Typically dental hygienists (or dentists) use special instruments to clean (debride) teeth below the gumline and disrupt any plaque growing below the gumline.
This is a standard treatment to prevent any further progress of established periodontitis. Studies show that after such a professional cleaning (periodontal debridement), bacteria and plaque tend to grow back to pre-cleaning levels after about 3-4 months. Hence, in theory, cleanings every 3-4 months might be expected to also prevent the initial onset of periodontitis.
The continued stabilization of a patient's periodontal state depends largely, if not primarily, on the patient's oral hydiene at home.
Without daily oral hygiene, periodontal disease will not be overcome, especially if the patient has a history of extensive periodontal disease.
BELL'S PALSY
INTRODUCTION:
Bell's palsy is a paralysis of the facial nerve resulting in inability to control facial muscles on the affected side. This nerve moves the facial muscles, stimulates the salivary and tear glands, and enables the front part of the tongue to detect tastes.
Several conditions can cause a facial paralysis, e.g., brain tumor, stroke, and Lyme disease. However, if no specific cause can be identified, the condition is known as Bell's Palsy.
Named after Scottish anatomist Charles Bell, who first described it, Bell's palsy is the most common acute mononeuropathy (disease involving only one nerve), and is the most common cause of acute facial nerve paralysis.
SYMPTOMS:
Pain behind the ear may be the first symptom.
It may develop several hours or even a day or two before the facial muscles weaken. Facial weakness occurs suddenly.
The effect ranges from mild weakness to complete paralysis.
By 48 hours, the weakness is as severe as it will be. Only one side of the face is affected. It becomes flat and expressionless.
However, people often feel as though the face is twisted because the muscles on the unaffected side tend to pull the face to that side every time they make a facial expression.
Wrinkling the forehead, blinking, and grimacing may be difficult or impossible. For most people, the face feels numb or heavy, even though sensation remains normal.
Closing the eye on the affected side may be difficult.
People may be unable to close the eye completely, and they blink less frequently.
The eye also tends to turn upward when it is closed.
Bell's palsy may interfere with the production of saliva and tears.
People may have dry eyes & dry mouth, or they may drool. Because fewer tears are produced and the eye blinks less often (blinking helps moisten the eye's surface), the eye becomes dry, resulting in pain and eye damage.
Eye damage is usually minor but can be serious if the eye is not moistened and protected another way.
People may be unable to taste with the front part of the tongue on the affected side.
The ear on the affected side may perceive sounds as abnormally loud (a condition called hyperacusis) because the muscle that stretches the eardrum is paralyzed.
This muscle is located in the middle ear.
Did You Know...
Bell's palsy is often caused by the same virus that causes herpes mouth infections.
Lyme disease can cause facial nerve paralysis, similar to Bell's palsy.
Occasionally, as the facial nerve heals, it forms abnormal connections, resulting in unexpected movements of some facial muscles or in watering of the eyes (“crocodile tears”) during salivation.
Because the facial muscles are not used for a long time, permanent tightening of the muscles (contractures) occasionally occurs.
DIAGNOSIS:
There is no specific test for Bell's palsy, but it can usually be diagnosed based on symptoms. Bell's palsy (and other types of facial nerve paralysis) can be distinguished from a stroke because a stroke usually causes weakness only in the lower part of the face rather than in the entire face. People who have had a stroke can close the eyes tightly and wrinkle the brow. Also, a stroke typically causes weakness of an arm and a leg.
Doctors can distinguish Bell's palsy from other, rare disorders that cause facial nerve paralysis (such as tumors, infections, and skull fractures) because the other disorders cause different symptoms and symptoms usually develop slowly. Usually, doctors can exclude these disorders on the basis of the person's history and results of x-rays, magnetic resonance imaging (MRI), or computed tomography (CT). A blood test may be done to check for Lyme disease, and a blood test and a chest x-ray may be done to check for sarcoidosis.
TREATMENT & PROGNOSIS:
An antiviral drug that is effective against herpes simplex virus is usually given by mouth even when the cause is unknown.
These drugs prevent the virus, if present, from replicating.
If symptoms have been present less than 48 hours, a corticosteroid, such as prednisone is given by mouth to reduce swelling of the nerve.
Taking a corticosteroid may decrease the pain & slightly speed and improve the recovery of movement.
If the eye cannot close completely, it must be protected from dryness to reduce the risk of eye damage. Eye drops consisting of artificial tears or a salt (saline) solution are applied to the eye until it can close completely.
People may need to wear an eye patch some of the time, particularly during sleep.
When paralysis-induced eye opening is permanent, Intrapalpebral Gold weights are inserted, thus closing the upper lid.
Rarely, in severe cases, the upper and lower eyelids are sewn together.
When facial paralysis is partial, most people recover completely within several months whether they are treated or not.
When the paralysis is total, the outcome varies. Tests (nerve conduction studies and electromyography can be done to help predict the likelihood of recovery.
Many people do not recover completely. The facial muscles may remain weak, causing the face to droop.
Thursday, September 25, 2008
Every one is free to share their knowledge & queries
Hello!!!!
Thanks for boosting up my spirits to upgrade this blog!!!!
This blog is for all the professionals out there to discuss, share their knowledge.
Likewise for the all the other people to get their Queries Answered & solved.
We are here to learn,serve & impart dental education to all.
& Most Importantly to create Dental Awareness in the public about their Oral & Dental Healthcare.
Any kind of Queries & Contributions to the posts are Welcome!!!!!!!
Regards
Dr. Bhavati J. Lukka
Thanks for boosting up my spirits to upgrade this blog!!!!
This blog is for all the professionals out there to discuss, share their knowledge.
Likewise for the all the other people to get their Queries Answered & solved.
We are here to learn,serve & impart dental education to all.
& Most Importantly to create Dental Awareness in the public about their Oral & Dental Healthcare.
Any kind of Queries & Contributions to the posts are Welcome!!!!!!!
Regards
Dr. Bhavati J. Lukka
Wednesday, September 24, 2008
MTA is very alkaline, and it can be compared to Calcium Hydroxide when it comes to some of its biological and histological properties. The material is mixed with sterile water to provide a grainy, sandy mixture. Once the material has acquired this consistency it can be applied by using a Messing gun or an instrument supplied with it
The Dentist Drill May Become A Thing Of The Past Thanks To New Treatment Using Ramon Spectroscopy
The Dentist Drill May Become A Thing Of The Past Thanks To New Treatment Using Ramon Spectroscopy Being Developed At Kings College London
A new technology that spots tooth decay almost as soon as it's begun promises to reduce the need for drilling and filling, writes Patrick Walter in SCI's Chemistry & Industry (C&I) magazine.
Drilling is one of the top dental phobias and puts thousands of people off visiting their dentist every year.
The new technology, which may be available in dental surgeries in five years from now, is based on Raman spectroscopy most commonly used to distinguish between different chemicals by identifying each molecule's unique fingerprint.
It detects decay simply and painlessly by pointing a tiny optical fibre at the tooth to check on its health.
A preliminary study at King's College London, where the technique is being developed, found that chemical changes in the tooth could be detected by analysing how light is scattered when a laser is fired at the tooth.
Researchers were able to tell healthy teeth from carious teeth because bacteria, responsible for the decay, scatter light in a different way to healthy teeth.
The results were presented at Microscience 2008.
Frances Downey, a PhD student working on developing the technique at King's College London, said: 'The earlier you spot decay the better as you can remineralise the area so there is no cavitation and therefore no need for a filling.'
Dr Frederic Festy, who is supervising the project, is planning a larger trial using more teeth samples and hopes to move onto human trials soon. The key to the technique is its simplicity, he explains.
Currently, decaying teeth are uncovered either by visual examination or the use of x-rays, but usually by then, the damage has been done and the decayed area must be drilled out.
But Dr Steven Hogg, a microbiologist at Newcastle University's dental school, confirms that it is possible to repair teeth with a special mouthwash or fluoride varnish if dental decay is caught early enough.
The downside of developing the machines is the cost and the time it takes to do a scan - 30 seconds can be a long time for any patient to remain perfectly still.
Source: Meral Nugent Society of Chemical Industry
A new technology that spots tooth decay almost as soon as it's begun promises to reduce the need for drilling and filling, writes Patrick Walter in SCI's Chemistry & Industry (C&I) magazine.
Drilling is one of the top dental phobias and puts thousands of people off visiting their dentist every year.
The new technology, which may be available in dental surgeries in five years from now, is based on Raman spectroscopy most commonly used to distinguish between different chemicals by identifying each molecule's unique fingerprint.
It detects decay simply and painlessly by pointing a tiny optical fibre at the tooth to check on its health.
A preliminary study at King's College London, where the technique is being developed, found that chemical changes in the tooth could be detected by analysing how light is scattered when a laser is fired at the tooth.
Researchers were able to tell healthy teeth from carious teeth because bacteria, responsible for the decay, scatter light in a different way to healthy teeth.
The results were presented at Microscience 2008.
Frances Downey, a PhD student working on developing the technique at King's College London, said: 'The earlier you spot decay the better as you can remineralise the area so there is no cavitation and therefore no need for a filling.'
Dr Frederic Festy, who is supervising the project, is planning a larger trial using more teeth samples and hopes to move onto human trials soon. The key to the technique is its simplicity, he explains.
Currently, decaying teeth are uncovered either by visual examination or the use of x-rays, but usually by then, the damage has been done and the decayed area must be drilled out.
But Dr Steven Hogg, a microbiologist at Newcastle University's dental school, confirms that it is possible to repair teeth with a special mouthwash or fluoride varnish if dental decay is caught early enough.
The downside of developing the machines is the cost and the time it takes to do a scan - 30 seconds can be a long time for any patient to remain perfectly still.
Source: Meral Nugent Society of Chemical Industry
Link Between Heart Disease And Bleeding Gums
Bad teeth, bleeding gums and poor dental hygiene can end up causing heart disease, scientists heard at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
People with poor dental hygiene and those who don't brush their teeth regularly end up with bleeding gums, which provide an entry to the bloodstream for up to 700 different types of bacteria found in our mouths.
This increases the risk of having a heart attack, according to microbiologists from the University of Bristol and the Royal College of Surgeons in Ireland.
"The mouth is probably the dirtiest place in the human body," said Dr Steve Kerrigan from the Royal College of Surgeons in Dublin, Ireland.
"If you have an open blood vessel from bleeding gums, bacteria will gain entry to your bloodstream.
When bacteria get into the bloodstream they encounter tiny fragments called platelets that clot blood when you get a cut.
By sticking to the platelets bacteria cause them to clot inside the blood vessel, partially blocking it.
This prevents the blood flow back to the heart and we run the risk of suffering a heart attack."
People with poor dental hygiene and those who don't brush their teeth regularly end up with bleeding gums, which provide an entry to the bloodstream for up to 700 different types of bacteria found in our mouths.
This increases the risk of having a heart attack, according to microbiologists from the University of Bristol and the Royal College of Surgeons in Ireland.
"The mouth is probably the dirtiest place in the human body," said Dr Steve Kerrigan from the Royal College of Surgeons in Dublin, Ireland.
"If you have an open blood vessel from bleeding gums, bacteria will gain entry to your bloodstream.
When bacteria get into the bloodstream they encounter tiny fragments called platelets that clot blood when you get a cut.
By sticking to the platelets bacteria cause them to clot inside the blood vessel, partially blocking it.
This prevents the blood flow back to the heart and we run the risk of suffering a heart attack."
What You Need To Know About Women's Oral Health
Women and men have different oral health needs.
In fact, women's oral health needs change at different stages throughout their life, including puberty, pregnancy and menopause.
Changes in women's oral health care needs are primarily related to changing hormone levels.
During puberty, the rise in hormone levels can lead to swollen and sensitive gums, as well as mouth sores.
Long-term use of oral contraceptives can lead to gingivitis, as they contain progesterone or estrogen.
In addition, women who take oral contraceptives are twice as susceptible to develop dry socket. Regardless of life stage or gender, a person should always keep his/her dentist informed of any medications he/she is taking, including oral contraceptives, especially before any major dental procedure.
It is especially important to maintain good oral health during pregnancy. Due to the increase in hormone levels, particularly estrogen and progesterone, pregnant women are more at risk to develop inflamed gums, which if left untreated can lead to gum disease.
Pregnant women who are diagnosed with periodontal (gum) disease are more likely to have pre-term, low birth-weight babies.
To help prevent periodontal disease, brush thoroughly twice a day and floss daily.
As a baby's teeth typically develop in utero between the third and sixth month of pregnancy, it is essential that pregnant women receive sufficient amounts of key nutrients, such as calcium, protein, phosphorous and vitamins A, C and D. Remember, what a woman eats during pregnancy affects the development of her unborn child.
To minimize the risk of tooth decay, choose nutritious well-balanced meals and snacks.
Routine X-rays will likely be postponed during pregnancy.
However, there may be times when one is needed for dental treatment or a dental emergency that can't wait.
Untreated dental infections can pose risk to both mother and her unborn child. Radiation from X-rays is very low and precautions are taken to minimize radiation exposure.
However, it is important that a woman let her dentist know if she is pregnant or may be pregnant prior to any X-ray or dental procedure.
During menopause, it is not uncommon for women to develop dry mouth and sore and sensitive gums.
Dentists can recommend a number of products to help sooth your gums and stimulate salivary flow.
In fact, women's oral health needs change at different stages throughout their life, including puberty, pregnancy and menopause.
Changes in women's oral health care needs are primarily related to changing hormone levels.
During puberty, the rise in hormone levels can lead to swollen and sensitive gums, as well as mouth sores.
Long-term use of oral contraceptives can lead to gingivitis, as they contain progesterone or estrogen.
In addition, women who take oral contraceptives are twice as susceptible to develop dry socket. Regardless of life stage or gender, a person should always keep his/her dentist informed of any medications he/she is taking, including oral contraceptives, especially before any major dental procedure.
It is especially important to maintain good oral health during pregnancy. Due to the increase in hormone levels, particularly estrogen and progesterone, pregnant women are more at risk to develop inflamed gums, which if left untreated can lead to gum disease.
Pregnant women who are diagnosed with periodontal (gum) disease are more likely to have pre-term, low birth-weight babies.
To help prevent periodontal disease, brush thoroughly twice a day and floss daily.
As a baby's teeth typically develop in utero between the third and sixth month of pregnancy, it is essential that pregnant women receive sufficient amounts of key nutrients, such as calcium, protein, phosphorous and vitamins A, C and D. Remember, what a woman eats during pregnancy affects the development of her unborn child.
To minimize the risk of tooth decay, choose nutritious well-balanced meals and snacks.
Routine X-rays will likely be postponed during pregnancy.
However, there may be times when one is needed for dental treatment or a dental emergency that can't wait.
Untreated dental infections can pose risk to both mother and her unborn child. Radiation from X-rays is very low and precautions are taken to minimize radiation exposure.
However, it is important that a woman let her dentist know if she is pregnant or may be pregnant prior to any X-ray or dental procedure.
During menopause, it is not uncommon for women to develop dry mouth and sore and sensitive gums.
Dentists can recommend a number of products to help sooth your gums and stimulate salivary flow.
Are Diabetes And Obesity Linked To Periodontitis?
Are Diabetes And Obesity Linked To Periodontitis?
The University of Illinois at Chicago has received a two-year federal grant to continue a study on how periodontitis, an inflammatory disease of the tissues surrounding teeth, is linked to type 2 diabetes and obesity.
Dr. Keiko Watanabe of the UIC College of Dentistry has found that periodontitis accelerates the onset of insulin resistance in rats fed a high-fat diet. Her new research will determine how periodontitis affects diabetic complications in the retina, aorta and pancreas.
"The prevalence of type 2 diabetes has risen dramatically as the result of an increase in obesity caused by a high-fat diet, junk food and a sedentary lifestyle," said Watanabe, associate professor of periodontics.
Although the association between obesity, type 2 diabetes and periodontitis is recognized, she said, the underlying causes remain poorly understood.
Watanabe said the goal of the new study is to identify the causes by which periodontitis influences insulin resistance, type 2 diabetes and organ damage, so clinicians will be able to screen prediabetic individuals at risk of developing the disease.
A plan to treat periodontal inflammation will also be developed so that insulin resistance will not accelerate to diabetes.
A key challenge is to determine whether the relationship between diabetes, obesity and periodontitis is causal, Watanabe said.
Most of the data linking the conditions are based on epidemiologic or cross-sectional studies, she said.
Watanabe uses female diabetic fatty rats in her research, a model that closely resembles humans who consume a high-fat diet and subsequently develop insulin resistance and type 2 diabetes. Human subjects, she said, cannot be used to study the direct effect of periodontitis because it is not ethical to induce the disease.
"Several prospective studies using human subjects demonstrated that the treatment of periodontitis led to improvement of glycemic control in subjects with type 2 diabetes," she said.
However, confounding factors, such as medications used to treat type 2 diabetes, body mass index, the stage and duration of diabetes, and the onset and severity of periodontitis are difficult to assess or are broadly controlled in such studies.
"Thus, the causal nature between periodontitis, diabetes and obesity remains unclear."
Notes:
Diabetes is a disease in which the body fails to produce -- or responds poorly to -- insulin, a hormone needed to control the level of blood sugar.
It is estimated that 300 million people worldwide will suffer from type 2 diabetes by the year 2025, nearly double the number of people affected in the year 2000.
Most Americans diagnosed with diabetes have type 2, according to the American Diabetes Association.
Watanabe's initial study was published in the July issue of the Journal of Periodontology. The study was funded by a UIC College of Dentistry Research Seed Grant.
The new study, totaling $432,000, is being funded by the National Institute of Dental and Craniofacial Research, one of the National Institutes of Health.
Dr. Terry Unterman, professor of medicine, physiology and biophysics, and Haohua Qian, associate professor of ophthalmology, will collaborate on the project.
Source:Sam HostettlerUniversity of Illinois at Chicago
The University of Illinois at Chicago has received a two-year federal grant to continue a study on how periodontitis, an inflammatory disease of the tissues surrounding teeth, is linked to type 2 diabetes and obesity.
Dr. Keiko Watanabe of the UIC College of Dentistry has found that periodontitis accelerates the onset of insulin resistance in rats fed a high-fat diet. Her new research will determine how periodontitis affects diabetic complications in the retina, aorta and pancreas.
"The prevalence of type 2 diabetes has risen dramatically as the result of an increase in obesity caused by a high-fat diet, junk food and a sedentary lifestyle," said Watanabe, associate professor of periodontics.
Although the association between obesity, type 2 diabetes and periodontitis is recognized, she said, the underlying causes remain poorly understood.
Watanabe said the goal of the new study is to identify the causes by which periodontitis influences insulin resistance, type 2 diabetes and organ damage, so clinicians will be able to screen prediabetic individuals at risk of developing the disease.
A plan to treat periodontal inflammation will also be developed so that insulin resistance will not accelerate to diabetes.
A key challenge is to determine whether the relationship between diabetes, obesity and periodontitis is causal, Watanabe said.
Most of the data linking the conditions are based on epidemiologic or cross-sectional studies, she said.
Watanabe uses female diabetic fatty rats in her research, a model that closely resembles humans who consume a high-fat diet and subsequently develop insulin resistance and type 2 diabetes. Human subjects, she said, cannot be used to study the direct effect of periodontitis because it is not ethical to induce the disease.
"Several prospective studies using human subjects demonstrated that the treatment of periodontitis led to improvement of glycemic control in subjects with type 2 diabetes," she said.
However, confounding factors, such as medications used to treat type 2 diabetes, body mass index, the stage and duration of diabetes, and the onset and severity of periodontitis are difficult to assess or are broadly controlled in such studies.
"Thus, the causal nature between periodontitis, diabetes and obesity remains unclear."
Notes:
Diabetes is a disease in which the body fails to produce -- or responds poorly to -- insulin, a hormone needed to control the level of blood sugar.
It is estimated that 300 million people worldwide will suffer from type 2 diabetes by the year 2025, nearly double the number of people affected in the year 2000.
Most Americans diagnosed with diabetes have type 2, according to the American Diabetes Association.
Watanabe's initial study was published in the July issue of the Journal of Periodontology. The study was funded by a UIC College of Dentistry Research Seed Grant.
The new study, totaling $432,000, is being funded by the National Institute of Dental and Craniofacial Research, one of the National Institutes of Health.
Dr. Terry Unterman, professor of medicine, physiology and biophysics, and Haohua Qian, associate professor of ophthalmology, will collaborate on the project.
Source:Sam HostettlerUniversity of Illinois at Chicago
Brush Your Teeth To Reduce The Risk Of Heart Diseas
Brush Your Teeth To Reduce The Risk Of Heart Disease
Heart disease is the leading cause of death worldwide.
However, many people with cardiovascular disease have none of the common risk factors such as smoking, obesity and high cholesterol.
Now, researchers have discovered a new link between gum disease and heart disease that may help find ways to save lives, scientists heard (Tuesday 9 September 2008) at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
In recent years chronic infections have been associated with a disease that causes "furring" of the arteries, called atherosclerosis, which is the main cause of heart attacks.
Gum disease is one of the most common infections of humans and there are now over 50 studies linking gum disease with heart disease and stroke.
"A number of theories have been put forward to explain the link between oral infection and heart disease," said Professor Greg Seymour from the University of Otago Dunedin, New Zealand.
One of these is that "certain proteins from bacteria initiate atherosclerosis and help it progress. We wanted to see if this is the case, so we looked at the role of heat shock proteins."
Heat shock proteins are produced by bacteria as well as animals and plants. They are produced after cells are exposed to different kinds of stress conditions, such as inflammation, toxins, starvation and oxygen and water deprivation.
Because of this, heat shock proteins are also referred to as stress proteins.
They can work as chaperone molecules, stabilising other proteins, helping to fold them and transport them across cell membranes. Some also bind to foreign antigens and present them to immune cells.
Because heat shock proteins are produced by humans as well as bacteria, the immune system may not be able to differentiate between those from the body and those from invading pathogens.
This can lead the immune system to launch an attack on its own proteins. "When this happens, white blood cells can build up in the tissues of the arteries, causing atherosclerosis," said Professor Seymour.
"We found white blood cells called T cells in the lesions of arteries in patients affected by atherosclerosis. These T cells were able to bind to host heat shock proteins as well as those from bacteria that cause gum disease. This suggests that the similarity between the proteins could be the link between oral infection and atherosclerosis," said Professor Seymour.
This molecular mimicry means that when the immune system reacts to oral infection, it also attacks host proteins, causing arterial disease.
These findings could fundamentally change health policy, highlighting the importance of adult oral health to overall health and wellbeing: control of gum disease should be essential in reducing the risk of heart disease.
"This is a significant step towards a more complete understanding of heart disease and improving treatment and preventive therapies," said Professor Seymour.
"An understanding of all the possible risk factors could help lower the risk of developing heart disease and lead to a significant change in disease burden."
Society for General Microbiologyhttp://www.socgenmicrobiol.org.uk/
Heart disease is the leading cause of death worldwide.
However, many people with cardiovascular disease have none of the common risk factors such as smoking, obesity and high cholesterol.
Now, researchers have discovered a new link between gum disease and heart disease that may help find ways to save lives, scientists heard (Tuesday 9 September 2008) at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
In recent years chronic infections have been associated with a disease that causes "furring" of the arteries, called atherosclerosis, which is the main cause of heart attacks.
Gum disease is one of the most common infections of humans and there are now over 50 studies linking gum disease with heart disease and stroke.
"A number of theories have been put forward to explain the link between oral infection and heart disease," said Professor Greg Seymour from the University of Otago Dunedin, New Zealand.
One of these is that "certain proteins from bacteria initiate atherosclerosis and help it progress. We wanted to see if this is the case, so we looked at the role of heat shock proteins."
Heat shock proteins are produced by bacteria as well as animals and plants. They are produced after cells are exposed to different kinds of stress conditions, such as inflammation, toxins, starvation and oxygen and water deprivation.
Because of this, heat shock proteins are also referred to as stress proteins.
They can work as chaperone molecules, stabilising other proteins, helping to fold them and transport them across cell membranes. Some also bind to foreign antigens and present them to immune cells.
Because heat shock proteins are produced by humans as well as bacteria, the immune system may not be able to differentiate between those from the body and those from invading pathogens.
This can lead the immune system to launch an attack on its own proteins. "When this happens, white blood cells can build up in the tissues of the arteries, causing atherosclerosis," said Professor Seymour.
"We found white blood cells called T cells in the lesions of arteries in patients affected by atherosclerosis. These T cells were able to bind to host heat shock proteins as well as those from bacteria that cause gum disease. This suggests that the similarity between the proteins could be the link between oral infection and atherosclerosis," said Professor Seymour.
This molecular mimicry means that when the immune system reacts to oral infection, it also attacks host proteins, causing arterial disease.
These findings could fundamentally change health policy, highlighting the importance of adult oral health to overall health and wellbeing: control of gum disease should be essential in reducing the risk of heart disease.
"This is a significant step towards a more complete understanding of heart disease and improving treatment and preventive therapies," said Professor Seymour.
"An understanding of all the possible risk factors could help lower the risk of developing heart disease and lead to a significant change in disease burden."
Society for General Microbiologyhttp://www.socgenmicrobiol.org.uk/
Wisdom Teeth: To Be Or Not To Be?
Wisdom Teeth: To Be Or Not To Be?
One fine day you wake up and find that the area behind your last tooth is swollen and tender to touch and you are unable to swallow.
Panic leads you nice and early to knock the doors of your dentist's office.
He/She tells you that it is your wisdom tooth that is trying to tear your gum and take its rightful place in your mouth, but it would be better to get it removed.
Now here is a dilemma if any.
How can you consent to get a tooth removed and that too one which has not yet erupted?
Your dentist is right, says a recent article published in the Journal of Oral and Maxillofacial Surgery.
The article tracks a study in which 254 patients who avoided getting their wisdom teeth removed.
These patients in their late teens to early 20s experienced gum problems in later life.
In a separate study related to the delay in getting these troublesome teeth extracted, it was found that 1,020 pregnant women in their early to late 20s had developed severe gum disease around the area and has a significant risk of giving birth to pre-term babies.
It is a well-documented fact that gum disease is indirectly linked to coronary artery disease, stroke, kidney disease and obstetric complications.
And since the third molars are a reservoir of bacteria due to their crooked position in the mouth, dentists advise that early removal reduces the risk of developing potentially serious infections in later life.
One fine day you wake up and find that the area behind your last tooth is swollen and tender to touch and you are unable to swallow.
Panic leads you nice and early to knock the doors of your dentist's office.
He/She tells you that it is your wisdom tooth that is trying to tear your gum and take its rightful place in your mouth, but it would be better to get it removed.
Now here is a dilemma if any.
How can you consent to get a tooth removed and that too one which has not yet erupted?
Your dentist is right, says a recent article published in the Journal of Oral and Maxillofacial Surgery.
The article tracks a study in which 254 patients who avoided getting their wisdom teeth removed.
These patients in their late teens to early 20s experienced gum problems in later life.
In a separate study related to the delay in getting these troublesome teeth extracted, it was found that 1,020 pregnant women in their early to late 20s had developed severe gum disease around the area and has a significant risk of giving birth to pre-term babies.
It is a well-documented fact that gum disease is indirectly linked to coronary artery disease, stroke, kidney disease and obstetric complications.
And since the third molars are a reservoir of bacteria due to their crooked position in the mouth, dentists advise that early removal reduces the risk of developing potentially serious infections in later life.
Teeth Reformation could be Possible with Ultrasound Technology
Teeth Reformation could be Possible with Ultrasound Technology 2
Scientists at the University of Alberta have developed an ultrasound technology that helps in teeth reformation. It was the first of its kind in dealing with the regrowth of human dental tissue.
People who suffer from dental root resorption caused by mechanical, chemical or hormonal means could be treated successfully with the new Low-Intensity Pulsed Ultra Sound(LIPUS) technology – say researchers.
Using low-intensity pulsed ultrasound (LIPUS), Dr. Tarak El-Bialy from the Faculty of Medicine and Dentistry and Dr. Jie Chen and Dr. Ying Tsui from the Faculty of Engineering have created a miniaturized system-on-a-chip that offers a non-invasive and novel way to stimulate jaw growth and dental tissue healing.
‘It's very exciting because we have shown the results and actually have something you can touch and feel that will impact the health of people in Canada and throughout the world,’ said Chen, who works out of the Department of Electrical and Computer Engineering and the National Institute for Nanotechnology.
The wireless design of the ultrasound transducer means the miniscule device will be able to fit comfortably inside a patient's mouth while packed in biocompatible materials. The unit will be easily mounted on an orthodontic or ‘braces’ bracket or even a plastic removable crown. The team also designed an energy sensor that will ensure the lipus power is reaching the target area of the teeth roots within the bone. TEC Edmonton, the U of A's exclusive tech transfer service provider, filed the first patent recently in the U.S. Currently, the research team is finishing the system-on-a-chip and hopes to complete the miniaturized device by next year.
Scientists at the University of Alberta have developed an ultrasound technology that helps in teeth reformation. It was the first of its kind in dealing with the regrowth of human dental tissue.
People who suffer from dental root resorption caused by mechanical, chemical or hormonal means could be treated successfully with the new Low-Intensity Pulsed Ultra Sound(LIPUS) technology – say researchers.
Using low-intensity pulsed ultrasound (LIPUS), Dr. Tarak El-Bialy from the Faculty of Medicine and Dentistry and Dr. Jie Chen and Dr. Ying Tsui from the Faculty of Engineering have created a miniaturized system-on-a-chip that offers a non-invasive and novel way to stimulate jaw growth and dental tissue healing.
‘It's very exciting because we have shown the results and actually have something you can touch and feel that will impact the health of people in Canada and throughout the world,’ said Chen, who works out of the Department of Electrical and Computer Engineering and the National Institute for Nanotechnology.
The wireless design of the ultrasound transducer means the miniscule device will be able to fit comfortably inside a patient's mouth while packed in biocompatible materials. The unit will be easily mounted on an orthodontic or ‘braces’ bracket or even a plastic removable crown. The team also designed an energy sensor that will ensure the lipus power is reaching the target area of the teeth roots within the bone. TEC Edmonton, the U of A's exclusive tech transfer service provider, filed the first patent recently in the U.S. Currently, the research team is finishing the system-on-a-chip and hopes to complete the miniaturized device by next year.
Teeth Reformation could be Possible with Ultrasound Technology
Teeth Reformation could be Possible with Ultrasound Technology
‘If the root is broken, it can now be fixed,’ said El-Bialy. ‘And because we can regrow the teeth root, a patient could have his own tooth rather than foreign objects in his mouth.’
The device is aimed at those experiencing dental root resorption, a common effect of mechanical or chemical injury to dental tissue caused by diseases and endocrine disturbances. Mechanical injury from wearing orthodontic braces causes progressive root resorption, limiting the duration that braces can be worn. This new device will work to counteract the destructive resorptive process while allowing for the continued wearing of corrective braces. With approximately five million people in North America presently wearing orthodontic braces, the market size for the device would be 1.4 million users.
In a true tale of interdisciplinary work, El-Bialy met Chen at the U of A's new staff orientation. After hearing about Chen's expertise in nanoscale circuit design and nano-biotechnology, El-Bialy explained his own research and asked if Chen might be able to help produce a tiny ultrasound device to fit in a patient's mouth. The two collaborated and eventually along with Tsui received a grant from NSERC's ‘Idea to Innovation,’ program to expand on their prototype.
Dr. El-Bialy first discovered new dental tissue was being formed after using ultrasound
on rabbits. In one study, published in the American Journal of Orthodontics and Dentofacial Orthopedics, El Bialy used ultrasound on one rabbit incisor and left the other incisor alone. After seeing the surprising positive results, he moved onto humans and found similar results. He has also shown that LIPUS can improve jaw growth in cases with hemifacial microsomia, a congenital syndrome where one side of the child's jaw or face is underdeveloped compared to the other, normal, side. These patients usually undergo many surgeries to improve their facial appearance. This work on human patients was presented at the World Federation of Orthodontics in Paris, September 2005.
‘After proving it worked, we looked at creating a smaller ultrasound carrier where we can take the patient out as a variable,’ said El-Bialy. ‘Before this, a patient has to hold the ultrasound for 20 minutes a day for a year and that is a lot to ask.’
The researchers are currently working on turning their prototype into a market-ready model and expect the device to be ready for the public within next two years.
Source: Eurekalert
‘If the root is broken, it can now be fixed,’ said El-Bialy. ‘And because we can regrow the teeth root, a patient could have his own tooth rather than foreign objects in his mouth.’
The device is aimed at those experiencing dental root resorption, a common effect of mechanical or chemical injury to dental tissue caused by diseases and endocrine disturbances. Mechanical injury from wearing orthodontic braces causes progressive root resorption, limiting the duration that braces can be worn. This new device will work to counteract the destructive resorptive process while allowing for the continued wearing of corrective braces. With approximately five million people in North America presently wearing orthodontic braces, the market size for the device would be 1.4 million users.
In a true tale of interdisciplinary work, El-Bialy met Chen at the U of A's new staff orientation. After hearing about Chen's expertise in nanoscale circuit design and nano-biotechnology, El-Bialy explained his own research and asked if Chen might be able to help produce a tiny ultrasound device to fit in a patient's mouth. The two collaborated and eventually along with Tsui received a grant from NSERC's ‘Idea to Innovation,’ program to expand on their prototype.
Dr. El-Bialy first discovered new dental tissue was being formed after using ultrasound
on rabbits. In one study, published in the American Journal of Orthodontics and Dentofacial Orthopedics, El Bialy used ultrasound on one rabbit incisor and left the other incisor alone. After seeing the surprising positive results, he moved onto humans and found similar results. He has also shown that LIPUS can improve jaw growth in cases with hemifacial microsomia, a congenital syndrome where one side of the child's jaw or face is underdeveloped compared to the other, normal, side. These patients usually undergo many surgeries to improve their facial appearance. This work on human patients was presented at the World Federation of Orthodontics in Paris, September 2005.
‘After proving it worked, we looked at creating a smaller ultrasound carrier where we can take the patient out as a variable,’ said El-Bialy. ‘Before this, a patient has to hold the ultrasound for 20 minutes a day for a year and that is a lot to ask.’
The researchers are currently working on turning their prototype into a market-ready model and expect the device to be ready for the public within next two years.
Source: Eurekalert
6 Cs of Cleidocranial Dysplasia
6 Cs of Cleidocranial Dysplasia:
1. Closure of Sutures improper
2. Clavicles are absent
3. Cellular Cementum absent
4. Cleft Palate found
5. Clinical absence of permanent teeth
6. Characteristic radiographic finding - multiple unerupted supernumerary teeth
1. Closure of Sutures improper
2. Clavicles are absent
3. Cellular Cementum absent
4. Cleft Palate found
5. Clinical absence of permanent teeth
6. Characteristic radiographic finding - multiple unerupted supernumerary teeth
Saturday, September 6, 2008
COSMETIC CREATIONS
The 16th Annual Conference of the IAACD
26th to 28th September, Hotel Intercontinental, Canacona, GOA
Only Rs 9,750/- package deal (Rs 9,250/- for IAACD Members) including
Two nights/three days stay at Intercontinental
Three lunches and two dinners including banquet night
Gift hamper valued at Rs 9,999/-
Pick up and drop from airport and railway station
Children below 5 yearsl totaly free, Children from 5 years to 12 years only Rs 4,000/-
Days Scholar Package Rs 2,750/- (Includes only Scientific and Lunches on all three days)
Scientific Program Comprising
Key note lectures - Dr. Cassis, Dr. Eduardo Mahn, Dr.Sandesh Mayekar, Dr.Ajit Shetty, Dr.Mona Kakar, Dr.Ajay Kakar, Dr.Harsh Vyas
Learning Curve Sesions directed by Dr. A.Kumarswamy, Dr. Ramesh Shankar, Dr. Kanir Bhatia, Dr. Sandesh Mayekar
Learning Curve presenters - Dr.Hemant Sachdev, Dr.Pankaj Maheshwari, Dr.Rumpa Wig, Dr. Siesha Mistry, Mr. Rahul Kakodkar, Dr.Deepak Mehta, Dr.Nrupal Kothare, Dr.Udata Kher, Dr.Pankaj Chivte, Dr.Aquil Reshamwaala, Dr.Ali Tunkiwaala, Dr.Sujit Bopardikar, Dr.Hetal Turakhia
The Big Fight - A scientific debate on latest trends in aesthetic dentistry
Five Preconference & Three Conference Courses
Free Papers and Electronic Posters
After Hours
Trade Tipple
Fun and Fiesta Banquet Dinner
Beach Binges and Blasts
Personal Nine Hole Golf Course
All details available at www.iaacd.org/ccreation.htm or call Laxmi at 25293024, 25234728, 25298998 or any IAACD Board Member
Registration is simple. Just go to www.iaacd.org/ccreation.htm and register ONLINE.
www.iaacd.org/ccreation.htm
info@iaacd.org
The 16th Annual Conference of the IAACD
26th to 28th September, Hotel Intercontinental, Canacona, GOA
Only Rs 9,750/- package deal (Rs 9,250/- for IAACD Members) including
Two nights/three days stay at Intercontinental
Three lunches and two dinners including banquet night
Gift hamper valued at Rs 9,999/-
Pick up and drop from airport and railway station
Children below 5 yearsl totaly free, Children from 5 years to 12 years only Rs 4,000/-
Days Scholar Package Rs 2,750/- (Includes only Scientific and Lunches on all three days)
Scientific Program Comprising
Key note lectures - Dr. Cassis, Dr. Eduardo Mahn, Dr.Sandesh Mayekar, Dr.Ajit Shetty, Dr.Mona Kakar, Dr.Ajay Kakar, Dr.Harsh Vyas
Learning Curve Sesions directed by Dr. A.Kumarswamy, Dr. Ramesh Shankar, Dr. Kanir Bhatia, Dr. Sandesh Mayekar
Learning Curve presenters - Dr.Hemant Sachdev, Dr.Pankaj Maheshwari, Dr.Rumpa Wig, Dr. Siesha Mistry, Mr. Rahul Kakodkar, Dr.Deepak Mehta, Dr.Nrupal Kothare, Dr.Udata Kher, Dr.Pankaj Chivte, Dr.Aquil Reshamwaala, Dr.Ali Tunkiwaala, Dr.Sujit Bopardikar, Dr.Hetal Turakhia
The Big Fight - A scientific debate on latest trends in aesthetic dentistry
Five Preconference & Three Conference Courses
Free Papers and Electronic Posters
After Hours
Trade Tipple
Fun and Fiesta Banquet Dinner
Beach Binges and Blasts
Personal Nine Hole Golf Course
All details available at www.iaacd.org/ccreation.htm or call Laxmi at 25293024, 25234728, 25298998 or any IAACD Board Member
Registration is simple. Just go to www.iaacd.org/ccreation.htm and register ONLINE.
www.iaacd.org/ccreation.htm
info@iaacd.org
Wednesday, September 3, 2008
Fluoride At Higher Levels Damages Brain
1) Fluoride's ability to damage the brain represents one of the most active areas of research on fluoride toxicity today.
2) The research on fluoride and the brain has been fueled by recent human studies from China finding elevated levels of fluoride exposure to be associated with reduced cognitive ability (e.g. reduced I.Q.) in children.Monday, September 1, 2008
Symposium on Biology & Biomechanics of tooth movement
There will be a symposium on the biology and biomechanics of orthodontic tooth movement in the SDM college of Dental sciences and hospital, Dharwad on 15th & 16th september.
Dr Vinod Krishnan will be the guest speaker along with inhouse staff speakers.
Other Guest speakers-Dr S. S Joshi Radiologist will speak on Nanotechnology in BTM and Mr Annigeri, Civil engineer will enligten on FEM in BTM Quiz and Essay competion will also be held.
Reg Charges will be Rs. 1500 including breakfast, lunch, high tea & Banquet
Accomodation will be arranged on request at the delegates expenditure
ContactDrAmeet- 09449178397
sdmortho@live.in
Brochure herehttp://www.mediafire.com/?mm4mgjsjnzo
Programme schedule herehttp://www.mediafire.com/?liodtbhjgiq
Registration formhttp://www.mediafire.com/?umtkvb0tzkz
Hotel registration detailshttp://www.mediafire.com/?rknymju3zzt
There will be a symposium on the biology and biomechanics of orthodontic tooth movement in the SDM college of Dental sciences and hospital, Dharwad on 15th & 16th september.
Dr Vinod Krishnan will be the guest speaker along with inhouse staff speakers.
Other Guest speakers-Dr S. S Joshi Radiologist will speak on Nanotechnology in BTM and Mr Annigeri, Civil engineer will enligten on FEM in BTM Quiz and Essay competion will also be held.
Reg Charges will be Rs. 1500 including breakfast, lunch, high tea & Banquet
Accomodation will be arranged on request at the delegates expenditure
ContactDrAmeet- 09449178397
sdmortho@live.in
Brochure herehttp://www.mediafire.com/?mm4mgjsjnzo
Programme schedule herehttp://www.mediafire.com/?liodtbhjgiq
Registration formhttp://www.mediafire.com/?umtkvb0tzkz
Hotel registration detailshttp://www.mediafire.com/?rknymju3zzt
following are some of the useful links to educative videos
http://in.youtube.com/watch?v=ACgPHDzTHaUhttp://in.youtube.com/watch?v=Wi5KSNH2wFk
http://in.youtube.com/watch?v=Q-X-APyRi4E
http://in.youtube.com/watch?v=zKhDvbKrLSA&feature=related
http://in.youtube.com/watch?v=ACgPHDzTHaUhttp://in.youtube.com/watch?v=Wi5KSNH2wFk
http://in.youtube.com/watch?v=Q-X-APyRi4E
http://in.youtube.com/watch?v=zKhDvbKrLSA&feature=related
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