Prosthodontics & Occlusion · single question
What is the primary purpose of using a DENTAL SURVEYOR when designing a removable partial denture (RPD)?
Show answer and explanation
Correct answer: C. To determine the path of insertion and identify/eliminate undercuts
A dental surveyor is used to: (1) Determine the path of insertion and withdrawal of the RPD; (2) Identify undercuts on abutment teeth; (3) Locate the survey line (height of contour); (4) Guide modification of abutment teeth; (5) Help select retentive clasp tips. The surveyor ensures the RPD can be inserted and removed smoothly without interference, and that clasps engage the correct depth of undercut.
- A. CORRECT. The primary purpose of a surveyor is to determine the path of insertion and identify/block out undercuts for RPD design.
- B. Incorrect. Tooth height measurement is not the primary purpose of a surveyor — this is done with conventional measurement tools.
- C. Incorrect. Shade selection involves colorimetric tools (shade guides) — not a surveyor.
- D. Incorrect. Periodontal bone levels are assessed by probing and radiography — not with a surveyor.
Practice Prosthodontics & Occlusion questions Prosthodontics & Occlusion study notes