Prosthodontics & Occlusion · single question
Which RPD design requires an indirect retainer?
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Correct answer: A. Kennedy Class I, mod 1
Distal-extension RPDs (Class I/II) need indirect retainers.
- A. Correct. Distal-extension (tooth-tissue-borne) cases like Class I need indirect retention to resist lifting of the distal extension.
- B. Class III is tooth-borne (bounded) and does not require indirect retention.
- C. Class IV's anterior rest line typically does not need a separate indirect retainer in the same way.
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