접착술식에 따른 전단강도 및 Bracket위치의 비교
The comparison of shear strength and bracket placement between bonding techniques
- 박윤경(Yun-Kyong Pak) 국윤아(Yoon-A Kook) 김상철(Sang-Cheol Kim)
- The Korean Journal of Orthodontics
- 제21권 제3호
- 등재여부 : KCI등재
- 513 - 520 (8 pages)
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.