Dental Dentures: Partial | Cosmetic Dentistry
Dental Dentures
Teeth whitening
9.3 Preparation of Recesses for Dental Rests
 114 (Partial Dentures: Anchorage with Precision Attachments) On posterior teeth the preparation of recesses for dental rests is relatively simple. However, difficulties can be encountered when a clasp must be placed where no edentulous space is present. The following mistake is often seen: recesses are prepared for the occlusal rests interproximally (Fig. 114), but a path is not provided into and out of the rests for the clasp shoulder (Fig. 115). |
 115 (Partial Dentures: Anchorage with Precision Attachments)  116 (Partial Dentures: Anchorage with Precision Attachments) Ample space must be provided through the occlusal embrasures to avoid occlusal interference and prevent possible breakage of the clasp. Definite recesses must be provided for the occlusal rests to insure that no wedging of the abutment teeth occurs. A great deal of precision is required in the preparation of a Bonwill or embrasure clasp (Fig. 116). |
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Tags: Dental Rests, Recesses