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
Gingivitis - Everything You Need To Know
Gingivitis is the most common periodontal disease, affecting 90% of the population. It is an infection of the gums caused by bacteria that form plaque.
In small amounts (when it is newly formed), plaque is invisible and relatively harmless. But when left to accumulate, it increases in volume and the proportion of harmful bacteria grows. These gingivitis bacteria release toxins that result in inflammation of the gum tissue and bad breath.
Eventually, the plaque hardens and forms hard deposits called calculus or tartar. If not properly treated, gingivitis may progress to periodontitis, a periodontal disease in which there is loss of the bone that supports the teeth.
Signs of Gingivitis
Gingivitis can be identified by red or swollen gums. In some circumstances, the gingivitis can cause bleeding gums when brushing or eating, and there may be bad breath. To diagnose gingivitis, a dentist may probe gently under the gums. In healthy gums, there should not be any bleeding with this gentle probing. A bleeding gum indicates that there is gum inflammation or gingivitis.
Who's At Risk for Gingivitis?
Certain people are more susceptible to gingivitis. Stress, smoking and poor nutrition can contribute to the development of gingivitis. Certain medications such as steroids, heart medications, cancer therapy drugs, anti-epilepsy drugs, and anti-depressants also increase the risk for gingivitis.
In the presence of plaque, these medications can lead to gum overgrowth. The enlarged gums can further interfere with oral hygiene, precipitating a vicious cycle of further gum enlargement.
Changes in female hormones can also increase the vulnerability to gingivitis. Adolescent women, pregnant women and women who take hormone replacement or birth control pills also have a greater risk of developing gingivitis.
There are several systemic illnesses that are associated with gingivitis. These include
- acute leukemia
- Addison's disease
- diabetes
- hemophilia
- immunodeficiency diseases (including HIV)
The swelling and redness of the gums may be disproportional to the amount of plaque present. To prevent further complications, meticulous plaque control is critical for people with these illnesses.
Gingivitis Treatment
For gingivitis treatment, the bacterial plaque and tartar have to be removed from the surfaces of the teeth by a dentist or hygienist. Then, the factors that contribute to plaque retention have to be altered in order to facilitate oral hygiene procedures.
This can involve re-shaping existing restorations or even moving teeth with braces so that they are not crowded. Essential to the success of the gingivitis treatment is the person's ability to control plaque build-up after initial treatment. Daily brushing and flossing are key to gingivitis prevention and helps prevent bad breath.
If there is a lot of gum inflammation, if the gums are very sensitive, or if there is a lot of tartar buildup, it may be necessary to numb the gums in order to remove the buildup of bacteria underneath the gum margins. If the gum is very inflamed and swollen, it may be necessary to remove some of the excess gum tissue surgically.
Gingivitis is reversible, and with proper gingivitis treatment and maintenance, it can be controlled. However, untreated gingivitis can result in gum defects, bone loss around the teeth, and eventual tooth loss and systemic complications. The best way to prevent gingivitis is by brushing and flossing daily, and by visiting the dentist for a routine cleaning and an examination at least every six months.
By Laura Minsk, DMD