http://en.wikipedia.org/wiki/Dental_composite

White fillings, also called composite fillings, are made from tooth-colored materials that restore the natural appearance of a decayed or previously filled tooth. A composite filling usually requires only one visit, during which the tooth is prepared and restored. An advantage of composite fillings, as compared with other dental restorations, is that they require less of the healthy part of a tooth to be removed to hold the filling in place. They are best to treat small to medium sized decays.

http://en.wikipedia.org/wiki/Endodontics

Inside each tooth in the root is the pulp which provides nutrients and nerves to the tooth. When the pulp is diseased or injured (decay or fracture), the pulp tissue dies. If you don't remove it, your tooth gets infected and you could lose it. To save the tooth and your smile, with an endodontic treatment the pulp is removed, the root canal is cleaned and sealed off to protect it. Most of the time, a root canal is a relatively simple procedure with little or no discomfort involving one to three visits.

http://en.wikipedia.org/wiki/Prosthodontics

Replacing your missing or damaged teeth will benefit not only your appearance but your overall health. Prosthodontic treatment can be seperated in to two: Removable dentures and fixed Prosthesis. Using state-of-the-art technology and updated materials, dentures can now be custom designed to look more natural and feel more comfortable. Under fixed Prosthesis we understand all single or multiple unit Prosthesis attached to a tooth or implant.