A cavity is a very small hole that forms on the surface, as well as the side or the root of a tooth. Cavities are caused when sugars in the food you eat are combined with the bacteria in your mouth. This combination produces a mild acid that eats away the enamel outer layer of your teeth.Cavities can occur when your hygiene is not taken care of. If you don't maintain your teeth, you can be prone to very serious consequences.
2.How teeth are restored
1) Beginning of a cavity
In this stage, only the small area of the cavity is removed, the tooth can likely be restored.
Composite restorations have a natural, tooth-like appearance and are used primarily on the anterior teeth, although many patients now prefer to have composite fillings placed on the posterior teeth.
A major advantage of this type of restoration is that they match the tooth color, and are aesthetically pleasing.
2)Mid stage of a cavity
Generally, when teeth are severely damaged, decayed or more than half of the tooth's biting surface is damaged, inlays and onlays are the recommended choice of dental restoration.
Inlays and onlays are a type of indirect filling used to restore teeth. Inlays and onlays can be made of gold or composite resin.
Gold is biocompatible and well tolerated by the human body.
Composite resin is the material of choice for inlays and onlays due to its color, which matches the natural color of your teeth.
3) Late stage of a cavity
If the decay causes the nerve or pulp of the tooth to die, a root canal will be performed.
Root Canal Treatment falls into a field of dentistry called endodontics, which deals with the nerve, or sensitive inner portion of the tooth. With root canal treatment, dentist removes the inflamed, infected or dead nerve from inside your tooth, giving the area a careful cleaning and then inserting a root filling material into the rootwhere the nerve originally was. This prevents the tooth from rotting and protecting your jaw from possible infection that can enter through the tooth. Every root canal treatment procedure takes about half an hour, and you should visit the dental clinic 3-4 times until completed. Your tooth will require extra protection from fracture and so a crown will be the best way to achieve this protection in the longer term.
The decayed or weakened area of the tooth is removed and repaired and a crown is fitted over the remainder of the tooth. Crowns are made from gold, porcelain, and porcelain fused to metal or gold.