Periodontal Disease: Preventing Tooth And Bone Loss
The best way to control periodontal disease and to help prevent tooth loss is with early detection and treatment. Three out of four people are afflicted by periodontal disease at some point in their lives, so everyone should be tested. After reviewing a patient's dental and medical history, the dental care provider or periodontist will conduct a thorough clinical intraoral exam called a periodontal charting.
This consists of taking a series of measurements around each tooth. Unless the gums are very inflamed and sensitive, the periodontal charting causes minimal discomfort.
The space between the gum and the tooth is measured using a periodontal probe. This space is called the probing or pocket depth. In a healthy mouth, this space should be between 0 and 3 millimeters.
The amount of recession or loss of gum around each tooth is measured. In healthy mouths, the gum tissue should be at the junction of where the crown of the tooth meets the root. The two measurements (pocket depth and recession) are then added to calculate the amount of attachment loss around each tooth. The greater the amount of attachment loss, the more advanced the periodontal disease.
While completing the periodontal charting, a dentist will evaluate the conditions of an individual's gums. Healthy gums are pale pink, firm, and immobile. The gums should not bleed during the probing exam. Bleeding gums during this exam are a sign of gum inflammation, gingivitis or periodontitis.
The dentist will also measure tooth mobility. Under normal functional conditions, teeth should not move. Tooth mobility is a sign that there has been bone loss around the teeth or that the biting forces are too strong. If so, the dentist may also assess a patient's occlusion, or bite. If the bite has changed or if the forces on the teeth are too strong, there may be an acceleration of bone loss around the teeth.
A full mouth series of X-rays (approximately 20 films) are also indispensable in a periodontal examination.
In addition to identifying areas with cavities, bone infection, tumors, or developmental abnormalities, X-rays help reveal if bone loss has resulted from periodontal disease. The crest of the teeth's supporting bone is normally 2 mm below where the crown of the tooth meets the root. A greater distance indicates a history of bone loss.
Although bacterial samples are not usually taken for diagnosis of periodontal disease , under certain circumstances, it may be necessary to take a bacterial culture from a plaque sample. This is especially valuable to help detect sites at high risk for disease progression or if conventional treatment is not working.
The culture is analyzed in a laboratory for the presence of certain bacteria that are known to contribute to gum disease. Actually, of the more than 300 different types of bacteria normally found in the mouth, there are only about 13 that are known to be associated with causing periodontal disease. After identifying the specific disease-causing bacteria, the laboratory can test to determine what antibiotics they are susceptible to.
Depending on the risk factors (see article " Risk Factors for Periodontal Disease") involved and a person's specific situation, other tests may also be required. Under certain circumstances, a dentist may require diagnostic casts (molds of one's teeth), medical laboratory tests, medical consultation, or genetic testing.
After completing the periodontal examination, the dentist will be able to discuss with the patient the diagnosis, treatment alternatives, potential complications, and expected results. The key to long-term periodontal health is early diagnosis and treatment. Because everyone is at risk of developing periodontitis, everyone should be routinely tested.
By Laura Minsk, DMD
Gum Disease and Diabetes
Periodontitis and diabetes are both chronic diseases that modulate each other. That is, they can exacerbate each other, each making the other more severe. Diabetes can have a negative effect on periodontal health and periodontal disease can increase the need for insulin in diabetics.
Periodontal Disease Has a Negative Effect on Diabetic Control
Periodontal disease is an infection that, like any infection, can make it hard to keep blood sugar under control. Increased blood sugar levels can result in an increased risk for diabetic complications such as harm to the eyes, nerves, kidneys, and other important organs. But studies have shown that treatment of periodontal disease can reduce the need for insulin in diabetics. So, by treating and controlling the periodontal infection, a person also is controlling insulin need and diabetes.
Poor Diabetic Control Has a Negative Effect on Periodontal Health
Compared to non-diabetics, people with poorly-controlled diabetes (those with blood glucose levels above normal) are more likely to develop periodontal abscesses and other oral infections. The longer someone has diabetes, the more likely they are to have periodontal disease. And if the person smokes and has poorly-controlled diabetes, the risk of developing periodontal disease is even greater.
Poor diabetic control can affect the gum tissue in two ways. One is the result of the thickening of the blood vessels that occurs with diabetes. This results in a reduction of oxygen and nutrient delivery to the tissues and a diminished ability of the immune system to fight infection, including periodontal disease. The second is because many of the bacteria that cause oral infection thrive on the sugar linked to diabetes (glucose). Poor diabetic control can actually feed the bacteria that cause periodontal disease.
Oral symptoms associated with poor diabetic control include:
- Increased tooth mobility
- Dry mouth that can increase the risk for ulcers, root cavities, and infections
- Infections that take longer to heal and are more severe
These symptoms can all be managed with control of blood glucose and improved periodontal health. If the diabetes is well controlled and blood sugar level is within the normal range, the risk of developing periodontal disease is not greater than in people who don't have diabetes. On the flip side, treating periodontal disease reduces the need for insulin on people that have diabetes.
To prevent complications from periodontal disease and diabetes, it is important to maintain normal blood sugar levels and periodontal health. Follow the diet and medication guidelines supplied by your physician and see your dental care provider routinely for periodontal screenings and professional cleanings. Meticulous plaque control is critical. If you have diabetes, your dentist needs to know what your blood glucose level is before starting any dental surgical procedures, and although abscesses and acute dental infections should be treated as soon as possible, non-emergency dental treatment should be postponed until the blood glucose is well controlled.
By Laura Minsk, DMD