Which of the following is an example of tertiary prevention in dentistry?

Tertiary prevention in dentistry focuses on rehabilitation and restoration after a dental disease or injury has already occurred. This level of prevention aims to minimize the effects of an existing condition, enhance quality of life, and prevent further complications.

Crowns and bridges are restorative treatments that serve to replace or repair damaged or missing teeth. When a tooth has been significantly compromised due to decay, fracture, or other issues, these interventions help restore the tooth's function and integrity, effectively managing the consequences of the initial dental problem. This restoration aligns with the goals of tertiary prevention, as it addresses the effects of a previous condition and helps maintain oral health moving forward.

In contrast, regular dental cleanings, fluoride treatments, and sealants are forms of primary or secondary prevention. These approaches work to prevent dental issues from occurring in the first place or to identify them early on. They do not specifically focus on rehabilitation post-damage but rather on maintaining preventive care and promoting oral health.