Qanungo Anchal, Aras Meena Ajay, Chitre Vidya, Coutinho Ivy, Rajagopal Praveen, Mysore Ashwin
Department of Prosthodontics, Goa Dental College and Hospital, Bambolim, Goa, India.
J Indian Prosthodont Soc. 2016 Oct-Dec;16(4):340-345. doi: 10.4103/0972-4052.191291.
The aim of this study was to compare the single-step border molding technique using injectable heavy viscosity addition silicone with sectional border molding technique using low fusing impression compound by evaluating the retention of heat cure trial denture bases.
Ten completely edentulous patients in need of prostheses were included in this study. Two border molding techniques, single-step (Group 1) and sectional (Group 2), were compared for retention. Both border molding techniques were performed in each patient. In both techniques, definitive wash impression was made with light viscosity addition silicone. The final results were analyzed using paired -test to determine whether significant differences existed between the groups.
The -value (3.031) infers that there was a significant difference between Group 1 and Group 2 ( = 0.014). The retention obtained in Group 2 (mean = 9.05 kgf) was significantly higher than that of Group 1 (mean = 8.26 kgf).
Sectional border molding technique proved to be more retentive as compared to single-step border molding although clinically the retention appeared comparable.
本研究旨在通过评估热固化试验义齿基托的固位力,比较使用可注射高粘度加成型硅橡胶的单步边缘整塑技术与使用低熔合金印模材料的分段边缘整塑技术。
本研究纳入了10名需要义齿修复的全口无牙颌患者。比较了两种边缘整塑技术,即单步整塑(第1组)和分段整塑(第2组)的固位力。每位患者均采用两种边缘整塑技术。在两种技术中,均使用低粘度加成型硅橡胶制取终印模。采用配对t检验分析最终结果,以确定两组之间是否存在显著差异。
t值(3.031)表明第1组和第2组之间存在显著差异(P = 0.014)。第2组获得的固位力(平均值 = 9.05 kgf)显著高于第1组(平均值 = 8.26 kgf)。
尽管临床上固位力看起来相当,但分段边缘整塑技术被证明比单步边缘整塑技术更具固位力。