Year : 2017

Volume : Volume 7

Issue : Issue 3

Address for correspondence :
Dr. Aneri Patel
docaneri@gmail.com

Abstract

Background:  Aim: The aim of the present study was to determine a technique which produces a most complete post space impression that is accurate in all dimensions. Materials and Methods: 10 freshly extracted maxillary central incisors were collected followed by root canal treatment and post space was prepared leaving 4 mm of gutta-percha at the apex. Impression of post space was recorded by poly vinyl siloxane and the three techniques were employed that made use of  different combinations of 24 gauge anaesthetic needle vent, 26 gauge reinforcement wire and lentulo spiral. Hence in total 150 samples of impression were recorded and then evaluated for presence of void and completeness using magnifying glass of power 3x. Observations were recorded and statistically analyzed. Results:  Maximum number of void free impressions were obtained using anesthetic needle to vent air. Impressions made using lentulo spiral and needle did capture complete impressions but were flexible. However maximum number of complete, firm and void free impressions was produced using anesthetic needle, lentulo spiral and reinforcing wire.  Conclusions:  Use of anaesthetic needle vent produced void free impressions and lentulo spiral assures extension of material till full length but renders an unsupported impression to be flexible. Hence incorporating reinforcing wire is recommended to achieve firm, void free and complete impressions which were accurate in all dimensions.

Keywords: Impression technique, Prosthodontics, Dentistry.