Prosthodontics & Occlusion · single question
The primary function of the palatal strap (major connector) in maxillary RPD design requires a minimum distance from the free gingival margin of:
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Correct answer: C. 6 mm
The maxillary major connector (palatal strap/bar) must be kept at least 6 mm from the free gingival margin to avoid impingement on gingival tissues and to allow adequate plaque control access. This clearance prevents food entrapment and gingival inflammation adjacent to the connector.
- A. ❌ 8 mm would unnecessarily reduce the connector's coverage of the palate.
- B. ❌ 4 mm provides some clearance but is less than the standard recommendation.
- C. ✅ CORRECT – Major connectors on the maxilla must be at least 6 mm from the free gingival margin.
- D. ❌ 2 mm is insufficient clearance from the gingival margin for a major connector.
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