| buccal embrasure | A space existing on the facial aspect of the interproximal contact area between adjacent posterior teeth. (05 Mar 2000) |
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| gingival embrasure | A space existing cervical to the interproximal contact area between adjacent teeth. (05 Mar 2000) |
| incisal embrasure | A space existing on the incisal aspect of the interproximal contact area between adjacent anterior teeth. (05 Mar 2000) |
| occlusal embrasure | A space existing on the occlusal aspect of the interproximal contact areas between adjacent posterior teeth. (05 Mar 2000) |
| embrasure | 1. A splay of a door or window. "Apart, in the twilight gloom of a window's embrasure, Sat the lovers." (Longfellow) 2. An aperture with slant sides in a wall or parapet, through which cannon are pointed and discharged; a crenelle. Origin: F, fr. Embraser, perh. Equiv. To ebraser to widen an opening; of unknown origin. Source: Websters Dictionary (01 Mar 1998) |
| labial embrasure | A space existing on the facial aspect of the interproximal contact area between adjacent anterior teeth. (05 Mar 2000) |
| lingual embrasure | A space existing on the lingual aspect of the interproximal contact area between adjacent teeth. (05 Mar 2000) |
| bar clasp | A clasp whose arms are bar-type extensions from major connectors or from within the denture base; the arms pass adjacent to the soft tissues and approach the point of contact on the tooth in a gingivo-occlusal direction, a clasp consisting of two or more separate arms located opposite to each other on the tooth; the bar arms arise from the framework or from a connector and may traverse the soft tissue; one arm (bar), the retentive arm, usually terminates in the infrabulge (gingival convergence) area of the tooth; the other, the reciprocal arm, usually terminates on the suprabulge (occlusal convergence) area. Synonym: Roach clasp. (05 Mar 2000) |
| bar clasp arm | A clasp arm which has its origin in the denture base or major connector; it consists of the arm which traverses but does not contact the gingival structures, and a terminal end which approaches its contact with the tooth in a gingivo-occlusal direction. (05 Mar 2000) |
| retentive circumferential clasp arm | An arm that is flexible and engages the infrabulge at the terminal end of the arm. (05 Mar 2000) |
| Roach clasp | A clasp whose arms are bar-type extensions from major connectors or from within the denture base; the arms pass adjacent to the soft tissues and approach the point of contact on the tooth in a gingivo-occlusal direction, a clasp consisting of two or more separate arms located opposite to each other on the tooth; the bar arms arise from the framework or from a connector and may traverse the soft tissue; one arm (bar), the retentive arm, usually terminates in the infrabulge (gingival convergence) area of the tooth; the other, the reciprocal arm, usually terminates on the suprabulge (occlusal convergence) area. Synonym: Roach clasp. (05 Mar 2000) |
| circumferential clasp | A clasp that encircles more than 180 |
| circumferential clasp arm | A clasp arm which has its origin in a minor connector and which follows the contour of the tooth approximately in a plane perpendicular to the path of insertion of the partial denture. (05 Mar 2000) |
| clasp | 1. A part of a removable partial denture that acts as a direct retainer and/or stabiliser for the denture by partially surrounding or contacting an abutment tooth. 2. A direct retainer of a removable partial denture, usually consisting of two arms joined by a body which connects with an occlusal rest; at least one arm of a clasp usually terminates in the infrabulge (gingival convergence) area of the tooth enclosed. (05 Mar 2000) |
| clasp arm | A portion of a clasp of a removable partial denture which projects from the clasp body and helps retain the partial denture in position in the mouth. See: clasp. (05 Mar 2000) |