What is a cavity?
Cavities or tooth decay as they are called in medical terminology, are a form of dental caries. They are caused by acid that erodes tooth enamel. Bacteria, many types of which normally live in the human mouth, are to blame. They accumulate on the tooth surface in a sticky film called plaque. While most the plate on the front of the teeth of a person may be removed during the simple process of eating, a lot of plate wedges itself in holes, cracks, crevices and around the gum line of the teeth.
Therefore most people develop in these areas appears cavities and make small cuts rotten enamel, therefore, the term cavity. Some of these bacteria survive by consuming sugars and carbohydrates in the food we eat. These bacterium acids excreted as a byproduct of this process. These acids erode minerals in the tooth enamel, starting at the microscopic level and increase the size of the cavity as time passes.
What can be done to treat a cavity?
The only effective way to treat or repair a cavity is going to the dentist immediately before the cavity can get bigger. A cavity unattended grows bigger, even with a strict regimen of brushing and flossing, for two reasons. The acid has already developed a weakness in the tooth enamel, which means that this weakness will be exploited continuously by plaque.
There is also the acid has eaten in the tooth in such a small level that is still in the decayed portion of the tooth and cannot be brushed or rinsed. For these reasons the dentist has only one option. The dentist should clean the decayed portion of the tooth and install an artificial to take the place of the missing tooth substance-matter. This is called having a cavity filled or getting a filling if a particularly large or deep cavity.
The process to fill a cavity
First the dentist clings to a gel having the tooth cavity and the surrounding area. This gel numbs the area enough to allow the dentist to inject a local anesthetic into the tissue surrounding the tooth. The dentist uses a high-speed drill with a head called a cutter to carefully pare away the portion of the tooth that is rotten. In most cases the patient would have even if they had not received an anesthetic, but sometimes a cavity felt nothing can work deep enough to hit a nerve. It is the fear of having the drill goes all the way up to that point that makes many people avoid going to the dentist at the first signs of a cavity. Ironically, this almost always makes sure that the person will need to fill a deep drilled when they finally go to a dentist.
The material used for fillings at present is a composite resin. To put it in the cavity must first be prepared or “engraved” with a small amount of gel acid. This gel creates ridges along the inside of the cavity, the filling grip and ensure against loosening. The composite resin comes as two separate gels which are mixed and applied in place in the cavity. The material is hardened by applying a special bright blue light that emits radiation which reacts resin, dried in under a minute. Filling the edges of the drill are then used to match the surrounding tooth and the filling is completed.