STATISTICAL STUDY REGARDING THE PUTTY-WASH TECHNIQUE IMPRESSIONS RECORDED BY STUDENTS

Abstract

Introduction The impression record is an issue with many problematic aspects that can be manageable with correct understanding of circumstances involved. The putty-wash technique is the most frequent dental impression used in fixed prosthodontics. Aim of the study The purpose of the study is to evaluate the most common mistakes that are encountered by 4th year dental medicine students of U.M.Ph Iaúi during the impression record by putty-wash technique. Material and method 39 students of the 4th English section recorded on each other 78 maxillary and mandibular impressions, using the wash-technique, and then casted it. The materials used were “Zetaplus” and “Oranwash” condensation silicones (Zhermach, Italy). After the impressions and casts evaluation, the records were ranked in 3 classes: Class 1 (excellent), Class 2 (acceptable) and Class 3 (poor). The evaluation criteria involve aspects regarding different stages of the record: chosen tray, material manipulation, record, impression examination and casts examination. Results Considering that the records were performed on patients without prepared teeth, the study is focusing on the general errors, which impairs on the quality of the impressions and casts, leading to indirect restoration faults. Conclusions This study was a very good instrument in exposing the possible mistakes during impression record, making the students more aware of the problems that can arise, even in non-problematic, non-stressful clinical conditions