The effect of impression of the inherent deformation after adding the circular marker on oral impression

VernacularTitle:添加"正圆形标记"后对印模形变规律的影响
Author: Yekan LI ; Jie CHEN ; Bin WEI
Publication Type:Journal Article
Keywords: Dental impression technique; Location directories and signs; Odontometry
From: Chinese Journal of Primary Medicine and Pharmacy 2010;17(10):1299-1300,后插1
CountryChina
Language:Chinese
Abstract: Objective To investigate the effect of impression of the inherent deformation after adding the circular marker on oral impression. Methods Two metal molds were made by American Dental Association standards. Six metal circular needles were inserted on one of molds. Two groups of impression sample which named A and B were made by two metal molds. Marker line on the impressions were measured and observed by measuring microscope to compare the impressions (group A and B) with the deformation extent and the deformation law. Croup t test method of SAS6.12 software was adopted to analyze the dimensional changes of the samples. Results The deformation range of two. groups( A and B) of alginate impressions was 0.38% ～ 0.58% and 0.43% ～ 0. 66%. Two groups of silicone impressions' deformation range was 0.38% ～ 0.42% and 0.33% ～ 0.49%. There was no significant difference between the two groups (P > 0.05 ). Conclusion The method with adding markers points on the oral impression would the impression of the inherent deformation. This marking method wag feasible.