| extended clasp | A clasp that extends from its minor connector along the lingual and/or facial surface of two or more teeth. (05 Mar 2000) |
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| mastectomy, extended radical | Radical mastectomy with removal of the ipsilateral half of the sternum and a portion of ribs two through five with the underlying pleura and the internal mammary lymph nodes. (12 Dec 1998) |
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| contact lenses, extended-wear | Hydrophilic contact lenses worn for an extended period or permanently. (12 Dec 1998) |
| extended family | A group of persons comprising members of several generations united by blood, adoptive, marital or equivalent ties. (05 Mar 2000) |
| extended family therapy | A type of family therapy that involves family members outside the nuclear family and who are closely associated with it and affect it. (05 Mar 2000) |
| extended insulin zinc suspension | A long-acting insulin suspension, obtained from beef, with an approximate time of onset of 7 hours and a duration of action of 36 hours. Synonym: crystalline insulin zinc suspension. (05 Mar 2000) |
| extended pyelotomy | Extension of a standard pyelotomy into the lower pole infundibulum through the avascular plane between the posterior and basilar segmental renal arteries. Synonym: Gil-Vernet operation. (05 Mar 2000) |
| extended radical mastectomy | Excision of the entire breast including the nipple, areola, and overlying skin, as well as the pectoral muscles and the lymphatic-bearing tissues of the axilla and chest wall and internal mammary chain of lymph nodes. (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) |