The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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The Effect of N-acetyl cysteine (NAC) loading on the bone formation surrounding sandblasted and large-grit and acid-etched implants in the dog: A pilot study

성견에 식립된 sandblasted and large-grit and acid-etched 임플란트에서 N-acetyl cysteine(NAC)의 탑재가 주위 골형성에 미치는 영향에 대한 선행연구

  • Seo, Jae-Min (Department of Prosthodontics, School of Dentistry, Jeonbuk National University) ;
  • Kim, In-Ju (Department of Prosthodontics, School of Dentistry, Jeonbuk National University) ;
  • Bae, Min-Soo (Department of Prosthodontics, School of Dentistry, Jeonbuk National University) ;
  • Lee, Jung-Jin (Department of Prosthodontics, School of Dentistry, Jeonbuk National University) ;
  • Ahn, Seung-Geun (Department of Prosthodontics, School of Dentistry, Jeonbuk National University)
  • 서재민 (전북대학교 치의학전문대학원 치과보철학교실) ;
  • 김인주 (전북대학교 치의학전문대학원 치과보철학교실) ;
  • 배민수 (전북대학교 치의학전문대학원 치과보철학교실) ;
  • 이정진 (전북대학교 치의학전문대학원 치과보철학교실) ;
  • 안승근 (전북대학교 치의학전문대학원 치과보철학교실)
  • Received : 2019.09.11
  • Accepted : 2020.01.13
  • Published : 2020.04.30
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Abstract

Purpose: The aim of the present study was to investigate the effects of N-acetyl cysteine (NAC) loading on the bone formation surrounding sandblasted, large-grit and acid-etched (SLA) implants. Materials and methods: Implantation of NAC loaded SLA implants (NSI group) and SLA implants (SI group) was performed bilaterally in the mandible of 4 adult beagle dogs (each group, n = 8). The animals were sacrificed after a healing period of 3 and 6 weeks, respectively (n = 2 animal each). Dissected blocks were processed for histomorphometrical analysis. Bone to implant contact percentage (BIC%) and bone volume (BV%) were assessed histomorphometrically. Results: BIC% of NAC loaded SLA implants were about 50% higher than that of SLA implants at 3 weeks of bone healing, but not significantly (51.79 vs 35.43%; P=.185). BV% of NAC loaded SLA implants were significantly higher than that of SLA implants at 3 weeks of bone healing (45.09 vs 37.57 %; P=.044). At 6 weeks of bone healing, BIC% and BV% of two experimental groups were similar (P>.05). Conclusion: Within the limits of the present study, NAC loading have a positive effects on the early bone formation surrounding SLA implants. So, it might be concluded that NAC loading enhance the osseointegration and shorten the healing time after implantation of the SLA implants.

목적: N-acetyl cysteine (NAC)를 탑재한 sandblasted and large-grit and acid-etched (SLA) 임플란트를 성견에 식립한 후, 조직형태학적 분석을 통하여 NAC가 SLA 임플란트 주위의 초기 골형성에 미치는 영향을 알아보고자 한다. 재료 및 방법: NAC 탑재 여부에 따라 2개의 실험군으로 구성하였으며, SI 군은 NAC를 탑재하지 않은 SLA 임플란트로, NSI 군은 NAC를 탑재한 SLA 임플란트로 설정하였다. 4마리의 성체 비글 견에 두 실험군의 임플란트를 식립하고(각 군당 n = 8) 술 후 3주와 6주에 각각 2마리의 비글 견을 희생하여 식립된 임플란트 매식체와 주위 골 조직을 채취하였다. 조직 표본을 제작하고 조직형태학적 검사를 통해 골-임플란트 접촉률 및 골면적비율을 계산하였다. NAC 탑재 여부에 따른 각 실험군간 골-임플란트 접촉률과 골면적비율의 유의성을 알아보기 위해 독립표본 t검정을 이용한 통계분석을 시행하였다(α = .05). 결과: 3주차의 경우 NAC를 탑재한 SLA 임플란트가 일반 SLA 임플란트보다 약 1.5배 높은 골-임플란트 접촉률을 보였으나 통계적 유의성은 없었다(51.79 vs 35.43%; P = .185). 골면적 비율에서는 NAC를 탑재한 SLA 임플란트가 일반 SLA 임플란트보다 통계적으로 유의성 있게 높은 결과 값을 보였다(45.09 vs 37.57 %; P = .044). 6주차의 경우 골-임플란트 접촉률과 골면적 비율 모두에서 NAC를 탑재한 SLA 임플란트와 일반 SLA 임플란트가 비슷한 결과 값을 보였다(P > .05). 결론: 본 실험의 한계 내에서 NAC는 SLA 임플란트 주위의 초기 골형성에 긍정적인 영향을 미침으로써 임플란트의 골유착기간을 단축시키고 하중 부담시기를 앞당기는 데에 기여할 것이라고 사료된다.

Keywords

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