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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

Periodontitis, The Leading Cause of Gum Disease

According to information from the American Dental Association, three out of four Americans over age 35 have some form of periodontal disease, the major cause of tooth loss and bad breath (halitosis) in adults. Gingivitis is the mildest form of periodontal disease that, if left untreated, can progress to periodontitis, the loss of bone and tissues that support the tooth.

Periodontal disease has three stages, categorized by the extent of bone loss: mild moderate, and advanced. If only one or a few teeth are effected, it is localized. If all the teeth are involved, it is generalized.

Bacteria that accumulate at and below the gum line cause periodontitis. The bacteria release toxic substances that trigger the breakdown of the gum and bone. The body responds with an inflammatory response in which it essentially turns on itself and destructs the bone and tissues around the teeth. This is the body's way of warding off infectious agents.

When this happens the gum separates from the teeth, forming a gap called a periodontal pocket. If left untreated, periodontitis can lead not only to tooth loss but can also aggravate systemic illnesses. The signs of periodontitis may include:

• Bleeding gums when brushing or flossing
• Red, tender or swollen gums
• Bad breath (halitosis) or bad taste
• Receding gums (gums that have pulled away from the teeth)
• Loose teeth
• Teeth that have migrated from their original positions
• Tooth loss

Very often, however, people are not aware that they should see a periodontics professional because gum disease can progress without pain. It is possible to not exhibit warning signs and still have periodontitis. That is why it is very important to have routine periodontal screenings so that the early signs of the disease can be detected and treated before it becomes a major problem.

Periodontal Treatment

Periodontitis is treated in three phases. The first phase involves stopping the disease activity and progression of bone loss. The bacterial deposits (plaque and tartar) that formed above and underneath the gums need to be removed and the root surfaces of the teeth smoothed to enhance healing and deter future plaque retention.

This periodontal treatment is called scaling and root planing. During this phase, a dentist will review the patient's oral hygiene techniques, and give them advice on how to modify certain risk factors associated with periodontal disease.

If the periodontal disease is more advanced, surgical treatment may be needed. The purpose of this phase of periodontal treatment is to create an environment that is more amenable to health and, if possible, bring back some of the bone that was lost to the disease. In some forms of periodontitis, antibiotic treatment may be used. If this is the case, a bacterial culture may be required to test for harmful bacteria and to establish what antibiotics they are susceptible to.

Periodontal disease is a chronic condition that, like many others, has to be closely monitored, even after active treatment.

The third (maintenance) phase is crucial to the success of any periodontal treatment. Daily brushing and flossing is essential in controlling ever-developing plaque and bad breath, as is periodic periodontal maintenance care with a professional scaling of the teeth. Periodontal status will be closely monitored, so that changes can be identified and treated as early as possible.

Everyone should be routinely screened for periodontitis. All dentists are qualified in detecting and treating the early stages of periodontitis, but if an individual suspects that they are at risk, or they know they have gingivitis, they may want to see a periodontist who has advanced training in the diagnosis and treatment of periodontal conditions.

By Laura Minsk, DMD