RELIABILITY OF ANTAGONISTIC ARCH IMPRESSION IN DENTAL PROSTHESES - CLINICAL-EVALUATION OF DIFFERENT PREIMPRESSION PREPARATION PROCEDURES

This study compared the influence of different methods of preimpressio n preparation on the quality of occlusal reproduction in irreversible hydrocolloid impressions. A total of 30 impressions of the lower denta l arch of a patient were made with five different preimpression prepar ation procedures. Stone casts were made and analyzed. Critical compari son showed that the preimpression preparation influenced the quality o f the occlusal surface of the cast, Fingerpainting the occlusal surfac e with fluid hydrocolloid before positioning the loaded impression tra y, associated with use of a saliva ejector, reduced the incidence of m acroscopic defects on the occlusal surface of the impressions.