extracoronal retainer


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ex·tra·cor·o·nal re·tain·er

a retainer that depends on contact with the outer circumference of the crown of a tooth for its retentive qualities.

extracoronal retainer

[-kôr′ənəl]
Etymology: L, extra + corona, crown, retinere, to hold
1 a dental anchor that incorporates a cast restoration lying largely external to the coronal portion of a tooth and complements the contour of the tooth crown. Resistance to displacement is developed between the inner surfaces of the casting and the external walls of the prepared tooth. The restoration incorporating an extracoronal retainer may be a complete or partial crown.
2 a direct clasp-type retainer that engages an abutment tooth on its external surface, used to retain and stabilize a removable partial denture.
3 a manufactured direct retainer, the protruding portion of which is attached to the external surface of a cast crown on an abutment tooth.

ex·tra·cor·o·nal re·tain·er

(ekstră-kōrŏ-năl rē-tānĕr)
Dental appliance that depends on contact with the outer circumference of the crown of a tooth for its retentive qualities.

ex·tra·cor·o·nal re·tain·er

(ekstră-kōrŏ-năl rē-tānĕr)
Retainer that depends on contact with the outer circumference of the crown of a tooth for its retentive qualities.
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