Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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A Modified Pretreatment with Deproteinization for Resin Infiltration in Early Childhood Caries

유아기우식증 치료를 위한 레진침투법에서 제단백제재의 사용

  • Nam, Siyeon (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
  • Shin, Jonghyun (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
  • Jeong, Taesung (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
  • Kim, Shin (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
  • Kim, Jiyeon (Department of Pediatric Dentistry, College of Dentistry, Pusan National University)
  • 남시연 (부산대학교 치과대학 소아치과학교실) ;
  • 신종현 (부산대학교 치과대학 소아치과학교실) ;
  • 정태성 (부산대학교 치과대학 소아치과학교실) ;
  • 김신 (부산대학교 치과대학 소아치과학교실) ;
  • 김지연 (부산대학교 치과대학 소아치과학교실)
  • Received : 2017.12.01
  • Accepted : 2018.01.25
  • Published : 2018.08.31
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Abstract

This study aimed to evaluate surface morphology and resin tag penetration of resin infiltration into primary anterior teeth after enamel deproteinization with sodium hypochlorite (NaOCl) prior to phosphoric acid ($H_3PO_4$) etching. Ninety primary anterior teeth with non-cavitated caries lesion were devided five groups according to enamel pretreatment as follows, group I-15% hydrochloric acid (HCl) 2min. ; group II-5.25% NaOCl 1min., 35% $H_3PO_4$ 1min. ; group III-5.25% NaOCl 2min., 35% $H_3PO_4$ 1min. ; group IV-5.25% NaOCl 1min., 35% $H_3PO_4$ 2min. ; group V-5.25% NaOCl 2min., 35% $H_3PO_4$ 2min. Fifteen teeth were examined etched surface structure using field emission-scanning electron microscope. Seventy five teeth were infiltrated with resin, maximum penetration depth and percentage penetration were analysed using dual fluorescence confocal microscopy. As the application time of NaOCl increased, ratio of enamel type I, II were increased. Percentage penetration (PP) was higher in group V than group II, III (p < 0.05). PP of group IV, V did not show any differences. Non-cavitated caries of primary anterior teeth can be treated with resin infiltration. Enamel deproteinization with NaOCl prior to 35% $H_3PO_4$ etching could be an alternative of 15% HCl etching in resin infiltration.

이 연구는 유전치 비와동성 우식 병소에 레진침투법을 시행할 때 sodium hypochlorite(NaOCl) 제단백 후 phosphoric acid($H_3PO_4$) 산부식 처리에 따른 법랑질 표면구조 및 레진 침투깊이 변화를 알아보았다. 90개의 발치된 비와동성 병소의 유전치를 전처리에 따라 5개 군으로 나누었다 : I군 hydrochloric acid(HCl) 2분; II군 NaOCl 1분, $H_3PO_4$ 1분; III군 NaOCl 2분, $H_3PO_4$ 1분; IV군 NaOCl 1분, $H_3PO_4$ 2분; V군 NaOCl 2분, $H_3PO_4$ 2분. 그 중 15개는 전계방사주사전자현미경을 통해 표면을 관찰하였고, 75개는 레진침투 후 공초점레이저주사현미경을 통해 병소 깊이와 레진 침투깊이를 측정하여 레진 침투도를 도출했다. NaOCl 적용 시간이 길어질수록 법랑질 산부식 I, II형 비율이 증가하였다. 레진 침투도는 V군이 II, III군에 비해 통계학적으로 유의하게 높았고(p < 0.05), IV, V군은 유의할 만한 차이가 없었다. 레진침투법은 유전치 초기 우식 병소의 치료로 사용될 수 있으며, 전처리 제로 15% HCl 산부식 대신 5.25% NaOCl 제단백 후 35% $H_3PO_4$ 산부식이 대안으로 고려될 수 있다.

Keywords

References

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