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한 단계 자가부식 접착제를 이용한 복합레진 수복 시 타액오염 후 처치 방법에 따른 미세인장강도 비교

Effect of Saliva Decontamination on Bond Strength of 1-step Self-etching Adhesives to Dentin of Primary Posterior Teeth

  • 이준희 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 김신 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 정태성 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 신종현 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 이은경 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 김지연 (부산대학교 치의학전문대학원 소아치과학교실)
  • Lee, Junhee (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Shin (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Jeong, Taesung (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Shin, Jonghyun (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Lee, Eungyung (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Jiyeon (Department of Pediatric Dentistry, School of Dentistry, Pusan National University)
  • 투고 : 2019.01.21
  • 심사 : 2019.02.18
  • 발행 : 2019.08.31

초록

이 연구의 목적은 유치에서 한 단계 자가부식 접착제를 이용한 레진수복 시 타액오염 후 처치과정에 따른 미세인장강도를 비교하는 것이다. 건전한 유구치를 접착제 사용에 따라 각각 $Scotchbond^{TM}$ Universal Adhesive (SBU), All-Bond $Universal^{(R)}$ (ABU), and $Tetric^{(R)}$ N Bond Universal (TBU)의 3 그룹으로 나누어 무작위로 분배하였다. 각 그룹은 접착제 도포 후 처치과정에 따라 7가지 하위분류로 나누었다. Subgroup I은 대조군으로써, 타액오염 없이 제조사 권고사항에 따라 접착제를 적용하였다. Subgroup II - IV는 접착제 광중합 전에 타액오염을 시행하였고, subgroup V - VII는 접착제 광중합 후에 타액오염을 시행하였다. 그 후 subgroup II, V는 건조, subgroup III, IV는 수세 후 건조, subgroup IV, VII는 수세 후 건조, 그리고 접착제 재도포를 시행하였다. SBU와 ABU에서 subgroup I, IV, VII의 미세인장강도가 subgroup II, III, V, VI의 미세인장강도보다 유의하게 높았다. TBU에서 subgroup I, IV의 미세인장강도가 subgroup II, III, V, VI의 미세인장강도보다 유의하게 높았다. 이 연구 결과, 임상가는 한 단계 자가부식 접착제를 이용한 레진 수복 시 타액과 수분의 오염으로부터 철저하게 격리를 지켜야 하지만 그럼에도 불구하고 타액오염이 발생하였다면, 수세 및 건조 후 접착제를 재도포할 것을 권장한다.

The purpose of this study was to evaluate effect of saliva decontamination procedures on microtensile bond strength (MTBS) of 1-step self-etching adhesives to dentin of primary posterior teeth. 63 sound primary-posterior teeth were randomly divided into 3 groups according to different kinds of 1-step self-etching adhesives: $Scotchbond^{TM}$ Universal Adhesive (SBU), All-Bond $Universal^{(R)}$ (ABU), and $Tetric^{(R)}$ N Bond Universal (TBU). Each group was randomly categorized into 7 subgroups: (I) application of adhesive without saliva contamination (control); (II - IV) contamination by saliva before photopolymerization; (V - VII) contamination by saliva after photopolymerization; (II, V) decontamination by drying; (III, VI) decontamination by washing and drying; (IV, VII) decontamination by washing, drying, and reapplication of adhesive. All samples were cut into the blocks. At least 15 blocks were tested for each subgroup. For SBU and ABU, the MTBS values of subgroups (I, IV, VII) were significantly higher than those of subgroups (II, III, V, VI). For TBU, the MTBS values of subgroups (I, IV) was significantly higher than those of subgroup (II, III, V, VI). The MTBS of 3 adhesives was reduced by saliva contamination. The adhesive strength on dentin of primary posterior teeth was restored by reapplication of the adhesives after washing and drying.

키워드

참고문헌

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