화학중합형 및 광중합형 레진접착제가 금속 및 도재브라켓의 전단결합강도에 미치는 영향
EFFECTS OF CHEMICALLY CURED RESIN AND LIGHT CURED RESIN ON SHEAR BOND STRENGTH OF METAL BRACKET AND CERAMIC BRACKET
- 대한치과교정학회
- The Korean Journal of Orthodontics
- 제24권 제1호
- : SCOPUS, SCIE, KCI등재
- 1994.03
- 125 - 134 (10 pages)
This study was designed for comparison of shear bond strengths and failure patterns of four experimental groups which combinated mesh-backed metal brackets and texture based ceramic brackets (Transcend series 2000<sup>(™)</sup>) with chemically cured resin (Mono Lok2<sup>(™)</sup>) and visible light cured resin (Transbond<sup>(™)</sup>). Brackets were bonded on the extracted human bicuspids, after etching them by manufacturer´s recommand, and the shear bond strengths were measured on the Instron machine after 24 hrs passed in the 37°C water bath. The results were as follows. 1. Ceramic brackets, transcend series 2000<sup>(™)</sup>, bonded with MonoLok2<sup>(™)</sup> showed statistically higher shear bond strength than mesh-backed metal brackets bonded with MonoLok2<sup>(™)</sup>. 2. There was no significant difference in shear bond strengths between metal and ceramic brackets bonded with Transbond<sup>(™)</sup>. 3. Ceramic brackets bonded with both Transbond<sup>(™)</sup> and MonoLok2<sup>(™)</sup> showed primarily fractures bet?ween brackets adhesive interface. 4. Enamel crack was not found in anyone specimen.