Dental OSCE (Objective Structured Clinical Examination) Practice Exam

How far (in mm) should major connectors be from the free gingival margin for the maxilla?

1. 4 mm

2. 6 mm

3. 8 mm

4. 10 mm

The correct answer is: 6 mm

The correct distance for major connectors from the free gingival margin in the maxilla is 6 mm. This distance is important for several reasons related to the health of the gingival tissue and the functionality of the dental prosthesis. Maintaining a 6 mm distance helps to ensure adequate space for oral hygiene measures, allowing patients to effectively clean around the prosthesis without damaging the gingival tissues. Closer placement could increase the risk of irritation or pressure on the gingiva, potentially leading to inflammation or even periodontal complications. Additionally, positioning the connector at this distance allows for a more stable and comfortable fit of the prosthesis, as it avoids encroaching on the natural contours of the dental arch and minimizes the risk of dislodgment during function. This consideration is critical for the longevity of the prosthetic device and the overall oral health of the patient. Determining the appropriate distance is part of the broader guidelines for designing removable partial dentures, and adhering to the 6 mm standard helps promote both functionality and oral health.