Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

EFFECT OF SURFACE TREATMENTS ON THE REPAIR BOND STRENGTH OF COMPOSITES

복합레진의 수리 시 표면처리가 결합강도에 미치는 영향

  • Choi, Jung-In (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Kim, Young-Jae (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Kim, Jung-Wook (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Lee, Sang-Hoon (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Kim, Chong-Chul (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Hahn, Se-Hyun (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University) ;
  • Jang, Ki-Taek (Department of Pediatric Dentistry, College of Dentistry and Dental Research Institute, Seoul National University)
  • 최정인 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 김영재 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 김정욱 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 이상훈 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 김종철 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 한세현 (서울대학교 치과대학 소아치과학교실 및 치학연구소) ;
  • 장기택 (서울대학교 치과대학 소아치과학교실 및 치학연구소)
  • Published : 2008.11.30
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Abstract

The purpose of this study was to evaluate the effect of surface treatment on the shear bond strength between new and old composite resin. The prepared resin specimens were separated 6 groups, and each group then received a different surface treatment. Then the repair material was added. Shear bond strengths for repair were measured after 7 days and the results were analyzed by using one way ANOVA. The results were as follows; 1. Group 3, 4(air abrasion) showed significantly higher shear bond strength than Group 1(phosphoric acid)(p<0.05). Group 5, 6(diamond bur) showed higher bond strength than Group 1(phosphoric acid) but not significantly different( p>0.05). 2. Group 2(self-etching adhesive) showed lower shear bond strength than Group 1(phosphoric acid) but not significantly different(p>0.05). 3. There was no statistically significant difference between Group 3(air abrasion) and Group 4(air abrasion+etching). 4. There was no statistically significant difference between Group 5(diamond bur) and Group 6(diamond bur+etching). In conclusion, the surface treatment with air abrasion resulted in higher repair bond strength than other methods. Repair bond strength was not significantly affected by acid etching.

본 연구의 목적은 표면처리가 기존의 레진과 새로운 레진 사이의 전단결합강도에 미치는 영향을 평가하는 것이다. 준비된 레진 시편을 6군으로 임의로 배분하여 각각의 표면처리를 한 후 수리용 레진을 축조하였다. 일주일간 보관 후 전단결합강도 를 측정하였고 일원분산 분석법으로 통계처리하여 다음과 같은 결과를 얻었다. 1. 3군과 4군(air abrasion)은 1군(산부식)에 비해 전단결합강도가 유의하게 높게 나타났다(p<0.05). 5군과 6군(diamond bur)은 1군(산부식)에 비해 높은 전단결합강도를 나타냈으나 통계적으로 유의하지 않았다(p>0.05). 2. 2군(자가부식 접착제)은 1군(산부식)에 비해 전단결합강도가 낮게 나타났으나 유의한 차이는 없었다(p>0.05). 3. 3군(air abrasion)과 4군(air abrasion+산부식)에서 전단결합강도의 차이는 유의하지 않았다(p>0.05). 4. 5군(diamond bur)과 6군(diamond bur+산부식)에서 전단결합강도의 차이는 유의하지 않았다(p>0.05). 결론적으로, 복합레진의 수리 시 air abrasion으로 표면처리를 했을 때의 결합강도가 가장 높았고, 산부식 방법과 처리여 부는 수리강도에 유의한 영향을 미치지 않았다.

Keywords

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