Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What is the defined distance that RPD major connectors on the maxilla or mandible must be from the free gingiva?

1. 2 mm

2. 3 mm

3. 4 mm

4. 5 mm

The correct answer is: 3 mm

The defined distance that removable partial denture (RPD) major connectors should maintain from the free gingiva is generally recognized as 3 mm. This distance is vital for several reasons. Firstly, it helps to ensure comfort for the patient, allowing adequate space between the major connector and the gingival tissue to avoid irritation or trauma during function. Secondly, maintaining this distance assists in promoting periodontal health by minimizing the potential for plaque accumulation and inflammation along the gingival margin. Moreover, this 3 mm distance effectively allows for adequate support and retention of the RPD while ensuring that the natural contours of the gingiva are respected. If the major connector is placed too close, it could lead to discomfort and potential periodontal issues, emphasizing why this specific measurement is critical in the design of an RPD. Understanding this distance is essential for dental professionals to enhance patient outcomes and comfort with removable prostheses.