Prosthodontics & Occlusion · single question
PRIMARY function of an indirect retainer in an RPD?
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Correct answer: B. Prevents rotation of denture away from tissue (around fulcrum line)
INDIRECT RETAINER prevents distal extension base from rotating away from tissue (tipping around fulcrum line formed by direct retainers). Works by lever action: placed anterior to fulcrum line, counteracts posterior lift. NOT used in Kennedy Class III.
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