In the eye's case, however, the film screen is your retina. Your retina is in the very back of the eye. It holds millions of cells that are sensitive to light. The retina takes the light the eye receives and changes it into nerve signals so the brain can understand what the eye is seeing. A Muscle Makes It Work
Dentures, also known as false teeth, are prosthetic devices constructed to replace missing teeth; they are supported by the surrounding soft and hard tissues of the oral cavity.
Orthodontics at Mayo Clinic. Orthodontics and dentofacial orthopedics, as the specialty is called, is the branch of dentistry that specializes in the diagnosis, prevention and treatment of dental and facial irregularities. The technical term for these problems is malocclusion, which means bad bite.. The practice of orthodontics requires professional skill in the design, application and control of corrective appliances (braces) to bring teeth, lips and jaws into proper alignment and achieve facial balance.