precision rest

precision rest

[prisish′ən]

Etymology: L, praecidere, to cut short; AS, rest

a rigid denture support consisting of two tightly fitting parts, the insert of which rests firmly against the gingival part of the device.

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rest,

n 1. passive support.
n 2. an extension from a prosthesis that affords vertical support for a restoration.

rest area,

n See area, rest.

rest, auxiliary,

n the rest other than the one used as a component part of a primary direct retainer.

rest, finger,

n See finger rest.

rest, incisal,

n a metallic extension onto the incisal angle of an anterior tooth to supply support or indirect retention for a removable partial denture.

rest, lingual,

n a metallic extension onto the lingual surface of an anterior tooth to provide support or indirect retention for a removable partial denture.

rest, occlusal,

n (occlusal lug), a rest placed on the occlusal surface of a posterior tooth.

rest occlusion,

n See position, rest, physiologic.

rest position,

n See position, rest.

rest, precision,

n a unit consisting of two closely fitted parts, the insert of which rests firmly against the gingival portion of the tubelike receptacle.

rest relation,

n See relation, jaw, rest.

rest seat,

n See area, rest.