Partial Denture Surveying — ORE Part 1 MCQ
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Correct answer: E — To establish insertion path, guide planes and retentive undercuts
Explanation lettering: E = shown as A · A = shown as E
Surveying analyses the master cast in relation to a proposed path of insertion. It allows the clinician to select a path that avoids undesirable interferences, identify surfaces requiring guide-plane preparation, and locate useful retentive undercuts for clasp placement. Therefore, A is correct. Impression accuracy and cast defects should be checked before or during cast production, not by surveying (B). Shade and tooth mould selection are aesthetic decisions (C), while occlusal planning requires assessment of opposing occlusion and articulation rather than surveyor analysis alone (D). Caries and periodontal disease require clinical and radiographic assessment of the abutment teeth, not examination of a master cast on a surveyor (E).
Reference: Koyama S, et al. The path of placement of a removable partial denture: a microscope based approach to survey and design. Journal of Advanced Prosthodontics, 2015. https://pubmed.ncbi.nlm.nih.gov/25722842/