| onlay | 1. A metal (usually gold) cast restoration of the occlusal surface of a posterior tooth or the lingual surface of an anterior tooth, the entire surface of which is in dentin without side walls; retention in the anterior tooth is by pins and in the posterior by pins and/or boxes in retentive grooves in the buccal and lingual walls. 2. A graft applied on the exterior of a bone. (05 Mar 2000) |
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| onlay graft | A bone graft applied on the outside of the recipient bone(s). (05 Mar 2000) |