The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지

THE COMPARISON OF SHEAR STRENGTH AND BRACKET PLACEMENT BETWEEN BONDING TECHNIQUES

접착술식에 따른 전단강도 및 Bracket위치의 비교

  • Pak, Yun-Kyong (Department of Orthodontics, College of Dentistry, Wonkwang University) ;
  • Kook, Yoon-A (Department of Orthodontics, College of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, College of Dentistry, Wonkwang University)
  • 박윤경 (원광대학교 치과대학 교정학교실) ;
  • 국윤아 (원광대학교 치과대학 교정학교실) ;
  • 김상철 (원광대학교 치과대학 교정학교실)
  • Published : 1991.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to compare the bracket placement and the shear bond strength of indirect-bonded brackets with those of direct-bonded ones. Forty eight extracted human teeth were collected and attached with brackets and tested on shear bond strength, using Instron. Fourteen patients from Wonkwang University Dental Hospital were selected for direct bonding of brackets and their teeth were measured on bracket angulation and bracket height. The obtained results were as follows: 1. The shear bond strengths of incisors were higher in direct-bonding,group, rather than in-direct-bonding group. But, the shear bond strength of premolars showed no significant differences between groups. 2. The bracket angulations of indirect-bonding group were preciser than those of direct-bonding group, especially in upper first premolars, lower lateral incisors, canines, premolars. 3. In bracket height, there were no significant differences between groups.

Keywords