ABSTRACT
Restoration of a periodontally compromised dental arch with a removable partial denture may require one or more design modifications. Multiple rests ensure that adequate vertical support remains in the event primary abutment teeth are lost. An open or closed base can be strategically placed in the maxillary major connector to facilitate the replacement of subsequently lost teeth. The location of finish lines can be modified to provide a smoother resin-to-metal transition when posterior teeth are lost. Wire direct retainers that provide more physiologically acceptable clasping of compromised teeth and that are easily adjusted and added to the prosthesis should be considered.
Subject(s)
Denture Design , Denture Retention/instrumentation , Denture, Partial, Removable , Periodontal Diseases/complications , Tooth Preparation, Prosthodontic , Dental Abutments , Dental Clasps , Denture Precision Attachment , Denture Retention/methods , Humans , Jaw, Edentulous, Partially/complicationsABSTRACT
Although it is taught in most dental schools, the boxing of impressions is often avoided by dentists after their graduation. This article presents a simple and efficient procedure that makes boxing impressions more acceptable. Irreversible hydrocolloid and the subsequent stone mix are confined with a magnetic boxing strip that can be easily removed and replaced. The procedure is described for boxing edentulous and partially edentulous altered cast impressions made with elastomeric impression materials.