Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

THE ANTICARIOGENIC EFFECT OF RESIN INFILTRATION ACCORDING TO THE PRETREATMENT OF SURFACE LAYERS IN NATURAL INCIPIENT CARIES LESIONS

초기 우식 병소의 표층 처리에 따른 Resin infiltration의 우식 저지 능력 평가

  • Kim, Min-Jeong (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Lee, Dong-Soo (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Shin (Department of Pediatric Dentistry, School of Dentistry, Pusan National University) ;
  • Jeong, Tae-Sung (Department of Pediatric Dentistry, School of Dentistry, Pusan National University)
  • 김민정 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 이동수 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 김신 (부산대학교 치의학전문대학원 소아치과학교실) ;
  • 정태성 (부산대학교 치의학전문대학원 소아치과학교실)
  • Received : 2010.07.16
  • Accepted : 2010.09.07
  • Published : 2010.11.30
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Abstract

As a most conservative, minimally invasive trial against early caries lesions, resin infiltration concept has been introduced and studied mainly about effective materials and pre-treatment methods of surface layers to arrest the lesion effectively, which is still going on. This study was performed with an aim of evaluating the efficacy of arresting the caries process in the natural incipient lesions in spite of removing the surface layers and we obtained the results as follows: 1. It was revealed that infiltration groups(1, 3, 5) showed lower radio-density decline between pre- and posttreatment than control groups(2, 4, 6)(p<0.05). 2. Group 5, in which the surface layer was removed with hydrochloric acid, showed the most significant anticariogenic effect(p<0.05). 3. Under SEM evaluation after infiltration, group 1 and 3 showed more irregular destruction and intensive loss of surface layers than group 5. In conclusion, it was thought resin infiltration can be an effective tool against the early caries lesions although surface layers are removed.

초기 우식 병소에 대한 비침습적 접근 방법인 resin infiltration은 병소 표층의 완전한 부식을 통해 병소 본체 내로의 레진침투를 시도한다. 다양한 접착 레진을 사용한 레진 침투 효과는 레진 자체의 물성 뿐 아니라 표면 처리방법과 관련하여 그 깊이에 한계를 보여, 최근 흐름성이 높은 infiltrant resin과 염산을 사용한 최적의 표면 처리 방법이 소개되었다. 이러한 접근은 비침습적인 방법임에도 불구하고 표층 제거에 따른 논란이 여전히 존재하므로, 본 연구는 표층 제거를 통한 레진의 침투깊이 강화가 우식저지 능력을 향상시키는데 기여할 수 있는지의 타당성을 평가하기 위해 시도되었다. 인접면에 초기 우식 병소를 보이는 탈락된 유구치에서 우식의 깊이가 법랑질 내층에 국한된 시편을 선택하였다. 시료의 표면 절반에 35% 인산으로 30초간 처리하고 ethanol 처리 및 infiltration을 시행한 1군과 시행하지 않은 2군, 35%인산으로 60초간 처리하고 동일한 처치를 시행한 3군과 시행하지 않은 4군, 15% 염산으로 120초간 처리하고 동일한 처치를 시행한 5군과 시행하지 않은 6군으로 분류하였다. 2주간 인공 우식을 유발하고 micro-CT를 촬영하여 처리 전후 병소의 방사선 밀도 변화를 관찰하고, 주사형 전자현미경으로 그 표면을 관찰하여 다음과 같은 결론을 얻었다. 1. 표층의 처치와 무관하게, 레진 처리를 시행한 모든 실험군에서 대조군에 비하여 인공우식 유발 후의 방사선 밀도 감소가 적었다(p<0.05). 2. 표층이 완전히 제거되어 레진 침투 깊이가 향상된 5군에서 방사선 밀도 변화가 가장 적었다. 1, 3, 5 군 간에 유의한 차이를 보였다(p<0.05). 3. 주사형 전자현미경 관찰 결과 5군보다 1, 3군에서 더 불규칙하고 광범위한 표층 파괴상이 관찰되었다.

Keywords

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