It is the study of dentistry which includes the etiology, diagnosis and treatment of teeth and their supporting tissues. It is usually done by means of metallic or nonmetallic materials. Restorative dentistry is the study, practice and treatment of diseases of the teeth in order to bring it back to its original healthy state. A dental speciality which comes under restorative dentistry is endodontics, periodontics and prosthodontics. Restoration of the oral and dental tissues is carried out by restorative dentistry. Restorative dentistry is concerned with the study, examination and treatment of diseases of the oral cavity. Restorative Dentistry includes all aspects of Endodontics and Fixed and Removable Prosthodontics and Implant Dentistry. It provides treatment for those people who require complex dental care.