Unlike removable prostheses such as dentures, crowns and bridges are permanently cemented or bonded onto existing teeth or implants and can only be removed by a dentist. A dental crown is a tooth shaped cap that is placed over a tooth to restore its shape and size, strength, and to improve its appearance. They protect a weak tooth from fracture and restore an already broken tooth or a tooth with severe wear.
Dental crown is a great restorative option when a large filling cannot support the chewing force, the tooth is unsupported/undermined structurally, and the tooth has had root canal treatment. In addition, they are often used for cosmetic improvement and to cover a dental implant.
A bridge may be recommended if you are missing one or more teeth. Spaces left by missing teeth eventually cause the neighboring teeth to rotate or shift into the empty space, resulting in malalignment and malocclusion of the dentition. The imbalance caused by missing teeth can possibly contribute to gum disease and temporomandibular joint (TMJ) disorders.