Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

THE EVALUATION OF MICROLEAKAGE OF PIT AND FISSURE SEALANT BY USAGE OF SELF-ETCHING ADHESIVE SYSTEM

자가 산부식 접착제를 이용한 치면열구전색의 미세누출 평가

  • Kim, Hyun-Jin (Department of Pediatric Dentisty, College of Dentistry, Chosun University) ;
  • Lee, Nan-Young (Department of Pediatric Dentisty, College of Dentistry, Chosun University) ;
  • Lee, Sang-Ho (Department of Pediatric Dentisty, College of Dentistry, Chosun University)
  • 김현진 (조선대학교 치과대학 소아치과학교실) ;
  • 이난영 (조선대학교 치과대학 소아치과학교실) ;
  • 이상호 (조선대학교 치과대학 소아치과학교실)
  • Published : 2008.05.30
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Abstract

The purpose of this study was to evaluate the effectiveness of fissurotomy and double application time of acidic primer of self-etching adhesive system of acid treatment on enamel surfaces for prevention of microleakage of pit and fissure sealants. The microleakage of pit and fissure sealants was evaluated by measuring the penetration depth of methylene blue solution. Specimens were divided by 4 groups according to the method of treatment. Group I: 35% phosphoric acid etching, 20 seconds. Group II: Priming with self-etching primer, 20 seconds. Group III: Priming with self-etching primer, 40 seconds. Group IV: Priming with self-etching primer, 20 seconds, after fissurotomy. The etched pattern produced on enamel was observed using a scanning electron microscope. Obtained data were analysed statistically using Kruscal-Wallis test followed by Mann-Whitney test for comparison of groups. The results are as follows: 1. Microleakage scores of group IV priming with self-etching primer 20 seconds after fissurotomy was the lowest. 2. Microleakage scores between group II and group III were not shown significant difference. 3. Enamel for 20 seconds etching with 35% phosphoric acid was observed the most effective etching pattern. And the etching pattern on the fissure enamel with self-etching adhesive 20 seconds after fissurotomy was more prominent than group II, III only using self-etching primer.

자가 산부식 접착제는 산부식 과정 후 수세없이 와동을 충전할 수 있다. 움직임이 많고 행동 조절이 어려운 환자의 경우 시술의 절차를 줄일 수 있는 자가 산부식 접착제가 치면열구전색제의 사용을 보다 용이하게 할 수 있다. 그러나 법랑질에 대한 산부식 능력이 인산에 비해 낮아서 충분한 부식이 일어나는지에 대해 논란이 되고 있다. 이에 대해 자가 산부식 접착제의 약한 산부식능을 감안하여 열구성형술과 acidic primer의 도포 시간을 증가시키는 등의 임상 술식을 시행하고 자가 산부식 접착제의 단점이 보완되는지를 알아보고자 하였다. 35% 인산으로 산부식 후 전색술을 시행한 경우와 자가 산부식 접착제를 사용하여 도포한 경우의 미세 누출도를 염색액의 침투도를 비교하고 주사전자현미경을 이용한 산부식상 관찰을 통하여 다음과 같은 결론을 얻었다. 1. 열구 성형술을 시행 후 자가산부식접착제를 도포한 군은 인산 부식 20초를 시행한 군과 자가산부식접착제를 20초, 40초 도포한 군보다 미세누출도가 더 낮았다. 2. 자가산부식접착제를 제조 회사의 지시에 따라 20초간 도포한 군과 40초로 늘려 도포한 군 간에 미세누출도의 유의차가 없었다. 3. 주사전자현미경 관찰 시 전형적인 산부식 양상은 인산부식 20초군에서만 관찰되었으며 열구성형술을 시행하고 자가산부식접착제를 도포한 군이 자가산부식접착제만 20, 40초 도포한 군보다는 표면 거칠기가 증가하였다.

Keywords

References

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