172 страниц. 2014 год. LAP Lambert Academic Publishing There are no limits to science. Each advance merely widens the sphere of exploration. Many a times the operator is confronted with situations where direct restoration are not feasible nor advisable because of extensive loss of tooth structure and /or need to modify or change the present occlusion . Keeping teeth is important for many functions, such as eating and speech, whilst in our present society good esthetics are a high priority for the majority of people. Dental care must also be designed to prevent any future problems and to help to maintain this healthy environment. This area of dentistry crosses many of the traditional departments that exist in teaching hospitals throughout the world and includes the disciplines of peridontology, operative dentistry, endodontics, fixed and removable prosthodontics.