A Preliminary Study of Effects of Ceramic Orthodontic Bracket and Residual Adhesive Removal Methods on Enamel Microcracks

• 발행기관: 대한치과교정학회
• 저자명: Jun-Young Jang Sung-hun Kim Yong-il Kim Soo-Byung Park Youn-Kyung Choi Seong-sik Kim
• 간행물 정보: 『대한치과교정학회 임상저널』14권 4호, 257~269쪽, 전체 13쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2024.12.31

국문 초록

Introduction: We aimed to evaluate the effects of ceramic orthodontic brackets and residual adhesive removal methods on enamel microcracks. Methods: Thirty extracted premolars were collected, and the location, length, and width of enamel microcracks were measured using scanning electron microscopy (SEM). Based on visibility, the teeth were categorized as follows: Group 1, with pronounced enamel microcracks visible under indoor lighting (n=12); Group 2, with weak enamel microcracks detectable only under SEM (n=12); and Group 3, the control group (n=6). In Groups 1 and 2, ceramic brackets were bonded and removed using a bracket-removing plier, followed by residual adhesive removal with either a carbide burr or sandblasting. In contrast, the teeth in Group 3 were air-dried without any additional procedures. A second SEM analysis reassessed the enamel microcracks, and these were compared with those in the first SEM analysis. Results: After removing the ceramic brackets and residual adhesive, the width and length of both pronounced and weak enamel microcracks increased in both the carbide burr and sandblasting groups, with no significant difference between the groups. Pronounced microcracks significantly increased in the cervical third of the teeth, whereas weak microcracks increased in the middle third. Notably, all weak microcracks transformed into pronounced microcracks. Conclusions: Removing residual adhesive after debonding ceramic brackets can exacerbate enamel microcracks. Since both the carbide burr and sandblasting methods increased the width and length of the enamel microcracks, with no significant difference between them, considering this risk is important if microcracks are detected before treatment. (Clin J Korean Assoc Orthod 2024;14(4):257-269)

목차

INTRODUCTION

MATERIALS AND METHODS

RESULTS

DISCUSSION

CONCLUSION

REFERENCES

키워드

Orthodontic brackets Enamel microcracks Orthodontic debonding Adhesive removal