Tempat Kedudukan Rest Lingual dalam Pembuatan Gigi Tiruan Sebagian Lepas Kerangka Logam Lingual Rest Seat in Removable Partial Denture

Abstract

In certain cases, lingual rest is needed to provide better retention for RPD. Lingual rest is a cingulum rest placed on the lower jaw in RPD design. It is used as an indirect retainer. To make the rest fit best, a good rest seat should be prepared in the cingulum. The outline form of the lingual rest is a half moon shaped with a smooth curve from one marginal ridge to the other, crossing the center of the tooth. The rest seat itself should be V shaped, and the depth is 1 - 1 1/2mm. In this situation, one of four options should be considered i.e.: fabricate a cast veneer crown, or a three quarter crown to place a lingual pin-lay, or put a small amalgam restoration in the base of the preparation when the dentin has been touched.