Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What is the posterior Pontic type?

1. Modified ridge lap

2. Hygienic design

3. Custom design

4. Conventional bridge

The correct answer is: Hygienic design

The posterior Pontic type refers specifically to the design of a tooth replacement used in fixed prosthodontics, particularly for posterior teeth where occlusion and hygiene considerations are paramount. The hygienic design is notable for its shape, which typically has a flat, concave or saucer-like surface that improves the ability to maintain oral hygiene. This design allows for easier cleaning around the pontic area, which can be particularly significant for preventing food accumulation and plaque buildup that can contribute to periodontal disease. This design emphasizes functionality and accessibility for cleaning, making it a preferred choice in clinical practice for its practicality. The contour of the hygienic pontic minimizes the risk of plaque retention, thus enhancing the overall health of the surrounding gums. The other options represent different pontic design styles: modified ridge lap and custom designs have their specific applications and benefits but may not focus as strongly on hygiene as the hygienic design. The conventional bridge typically refers more broadly to the traditional structure of fixed prosthodontics without emphasizing the design principles that facilitate cleaning efforts like the hygienic pontic does.