Myth: Once you treat a decayed tooth, it will not become decayed again.
Fact: It is possible for other areas of the tooth to become decayed; although proper brushing and flossing will prevent the treated area of the tooth from becoming decayed again. If a filling gets old and begins to break down, there is a possibility that bacteria can become trapped inside and cause tooth decay.
Myth:-Root canal treatment is painful
Fact—Root canal treatment doesn’t cause pain, it relieves it.
Root canal treatment today is no more uncomfortable than having a filling placed. In fact, a recent survey showed that patients who have experienced root canal treatment are six times more likely to describe it as “painless” than patients who have not had root canal treatment.
Most patients see their dentist or Endodontist when they have a severe toothache. The toothache can be caused by damaged tissues in the tooth. Root canal treatment removes this damaged tissue from the tooth, thereby relieving the pain you feel.
Myth : Brushing your bleeding gums is bad
Fact: Brushing is not only good on teeth, but also on your gums and tongue. Brushing these areas helps get rid of plaque which is what causes inflammation and eventually gum disease. One should not brush too hard if they have sensitive gums. One must not use a hard toothbrush on bleeding gums
1. Myth : Scaling is not good for teeth
Fact: Scaling removes tartar and keeps teeth and gums healthy. Scaling and deep cleaning of gums prevent the problem of bad breath and bleeding gums. Thus, scaling is beneficial for teeth and gums. One should get professional cleaning done by a dentist with a proper ultrasonic scaler.
2. Myth : Only sugar causes cavities
Fact: Cavities occur when bacteria produce acids in the mouth. The process can begin by any carbohydrate that you consume. That includes sugar, fruits, vegetables, rice and bread. To reduce chances of tooth decay, one should not only practice good dental care but also limit the intake of acidic products.
Gum diseases, also known as periodontal diseases, are usually caused by a build-up of bacteria and plaque that inflames and infects the gums. Plaque is a clear film on the teeth to which bacteria sticks, and if it’s not removed with brushing and flossing, it will turn into a hard material called tartar. Tartar and bacteria deposits around and under the gum line are the main causes of periodontal diseases.
There are two types of periodontal disease: gingivitis and periodontitis.
Fortunately, there are several procedures available to treat these oral health problems, depending on the severity of the disease.
The primary goal of any treatment for periodontal disease is to control and eliminate the tartar and bacterial infection around the teeth and under the gums. Treatments range from deep cleanings to oral surgery.
Periodontal Disease Prevention
Cavities, also called caries or tooth decay, develop when plaque damages the enamel that protects the outer surface of the teeth.
If you have cavities, it is important to have them treated by a dentist as soon as possible. Without prompt treatment, cavities can eventually progress and affect the delicate tissue and nerves deep within your teeth. When cavities are treated early, serious complications, such as nerve damage and tooth loss can be prevented.
What’s the single best way to avoid having bad breath? The answer’s simple—by maintaining good oral hygiene every day.
Brush. Floss. Rinse. It sounds pretty simple, yet it’s the best routine to help you win the battle against bad breath. These easy steps will help you get the most from your dental health routine:
Dental sealants act as a barrier to prevent cavities. They are a plastic material usually applied to the chewing surfaces of the back teeth (premolars and molars) where decay occurs most often.
Thorough brushing and flossing help remove food particles and plaque from smooth surfaces of teeth. But toothbrush bristles cannot reach all the way into the depressions and grooves to extract food and plaque. Sealants protect these vulnerable areas by “sealing out” plaque and food.
Sealants are easy for your dentist to apply. The sealant is painted onto the tooth enamel, where it bonds directly to the tooth and hardens. This plastic resin bonds into the depressions and grooves (pits and fissures) of the chewing surfaces of back teeth. The sealant acts as a barrier, protecting enamel from plaque and acids. As long as the sealant remains intact, the tooth surface will be protected from decay. Sealants hold up well under the force of normal chewing and may last several years before a reapplication is needed. During your regular dental visits, your dentist will check the condition of the sealants and reapply them when necessary.
The likelihood of developing pit and fissure decay begins early in life, so children and teenagers are obvious candidates. But adults can benefit from sealants as well. 
Sensitivity and specificity are statistical measures of the performance of a binary classification test, also known in statistics as classification function:
