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Unground enamel에 대한 all-in-one adhesive의 1회 또는 2회 적용이 미세인장 결합강도에 미치는 영향

Effects of one or two applications of all-in-one adhesive on microtensile bond strength to unground enamel

  • 손창용 (부산대학교 치과대학 치과보존학교실) ;
  • 김현철 (부산대학교 치과대학 치과보존학교실) ;
  • 허복 (부산대학교 치과대학 치과보존학교실) ;
  • 박정길 (부산대학교 치과대학 치과보존학교실)
  • Son, Chang-Yong (Department of Conservative Dentistry, College of Dentistry, Pusan National University) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, College of Dentistry, Pusan National University) ;
  • Hur, Bock (Department of Conservative Dentistry, College of Dentistry, Pusan National University) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
  • 발행 : 2006.11.30

초록

이 연구에서는 미세인장결합강도 실험과 주사전자현미경을 이용하여 unground enamel에 대한 all-in-one adhesive의 1회 또는 2회 적용에 따른 효과를 평가하였다. 발거된 하악 대구치의 설측 치관부를 사용하여 3개씩 5개의 군으로 분류하였다. SE군은 Clearfil$^{tm}$ SE Bond를 적용하였다. LP1 군, LP2 군은 Adper Prompt L-Pop$^{tm}$을 각각 1회 , 2회 적용하였다. XN1 군, XN2 군은 Xeno$^{R}$III를 각각 1회, 2회 적용하였다. 그런 다음 복합 레진 Z100을 적층 충전하였다. 법랑질 표면의 접착제를 아세톤으로 제거하고 주사 전자 현미경을 이용하여 산 부식 양상을 관찰하였다 미세인장결합강도 측정을 위해 표본을 절단하여 레진과 치아의 접착 계면이 1 mm$^2$이 되도록 하여 실험하였다. 실험의 결과는 One-way ANOVA를 사용해 분석한 다음 Duncan's post-hoc test로 사후 검정 하였다. 본 연구의 결과 all-in-one adhesive의 1회와 2회 적용간에는 유의한 차이가 나타나지 않았으며 two-step self-etching adhesive와 all-in-one adhesive의 산 부식 양상 모두 얕고 불규칙 하였다.

The purposes of this study were to compare the effects of one or two applications of all-in-one adhesives on microtensile bond strengths (${\mu}$TBS) to unground enamel and to investigate the morphological changes in enamel surfaces treated with these adhesives using a scanning electron microscopy (SEM). Twenty-five noncarious, unrestored human mandibular molars were used. The unground enamel surfaces were cleansed with pumice. The following adhesives were applied to lingual, mid-coronal surfaces according to manufacture's directions; Clearfil SE bond in SE group, Adper Prompt L-Pop$^{TM}$1 coat in LP1 group, 2 coats in LP2 group, Xeno$^{\R}$III1 coat in XN1 group, and 2 coats in XN2 group. After application of the adhesives, a hybrid light-activated resin composite was built up on the unground enamel. Each tooth was sectioned to make a cross-sectional area of approximately 1.0 mm$^2$ for each stick. The microtensile bond strength was determined. Each specimen was observed under SEM to examine the morphological changes. Data were analyzed with one-way ANOVA. The results of this study were as follows; 1. The microtensile bond strength values were; SE (19.77 ${\pm}$ 2.44 MPa), LP1 (13.88 ${\pm}$ 3.67 MPa), LP2 (14.50 ${\pm}$ 2.52 MPa), XN1 (14.42 ${\pm}$ 2.51 MPa) and XN2 (15.28 ${\pm}$ 2.79 MPa). SE was significantly higher than the other groups in bond strength (p < 0.05). All groups except SE were not significantly different in bond strength (p < 0.05). 2. All groups were characterized as shallow and irregular etching patterns.

키워드

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피인용 문헌

  1. The effect of various bonding systems on the microtensile bond strength of immediate and delayed dentin sealing vol.33, pp.6, 2008, https://doi.org/10.5395/JKACD.2008.33.6.526