semiprecision attachment

semiprecision attachment: attachment of a denture to an abutment tooth or a restoration by a semiprecision rest (q.v.), sometimes supplemented by a spring-loaded plunger or clip, fitting into a rest seat on the lateral surface of a crown, which is especially deepened to provide added retention.

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semiprecision rest — a denture rest, sometimes supplemented by a spring loaded plunger or clip, which fits into a seat in an abutment tooth that has been specially deepened to provide added retention. See also under attachment … Medical dictionary
precision attachment — (in dentistry) a special machined joint that holds certain types of partial denture in place. The attachment is in two parts, one fixed to the denture and the other fixed to a crown on one of the teeth abutting the denture. * * * 1. a device… … Medical dictionary

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