A dental prosthesis is an artificial device designed to replace missing or damaged teeth and surrounding oral structures, restoring both function and aesthetics to the mouth. These custom-fabricated appliances replicate the form and biomechanics of natural dentition, ranging from a single-tooth restoration to a complete-arch replacement.
Types of Dental Prostheses
Prostheses are classified as either fixed or removable, depending on how they attach to remaining oral structures.
Fixed prostheses are permanently cemented or anchored and cannot be removed by the patient:
- Dental crown: A cap placed over a damaged or endodontically treated tooth to restore its shape, strength, and occlusal surface.
- Fixed partial denture (bridge): A multi-unit restoration spanning an edentulous gap, using adjacent teeth as abutments and an artificial tooth called a pontic to fill the space.
- Implant-supported restoration: A crown or bridge anchored to osseointegrated titanium implants, providing superior stability without relying on neighboring tooth structure.
Removable prostheses can be taken out by the patient for cleaning:
- Complete denture: Replaces an entire arch of missing teeth, relying on mucosal support and suction or adhesive retention.
- Removable partial denture (RPD): Fills gaps when some natural teeth remain, using clasps or precision attachments for stability.
Why It Matters
Unrestored edentulous spaces allow neighboring teeth to drift and opposing teeth to super-erupt, disrupting occlusion and placing abnormal stress on the temporomandibular joint. Over time, the underlying alveolar bone resorbs, altering facial contours and complicating future treatment. A well-designed dental prosthesis distributes bite forces evenly across the arch, preserves the spatial relationships between remaining teeth, supports facial soft tissue volume, and restores chewing efficiency and phonetics.
Materials and Fabrication
Modern prostheses are fabricated from porcelain, zirconia, acrylic resin, metal alloys, or combinations of these materials. Selection depends on arch position, occlusal load, and aesthetic demands. Digital workflows using CAD/CAM technology have significantly improved fabrication precision, fit accuracy, and turnaround times compared to traditional analog methods.
Thorough evaluation of periodontal health, bone density, and functional needs is essential before treatment — early intervention preserves more natural structure and consistently leads to prosthetic outcomes that are both durable and lifelike.