생명과학회지 (Journal of Life Science)

  • 제28권10호
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  • Pages.1220-1232
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  • 2018
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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Bio-Oss와 β-TCP를 이용한 토끼 상악동 거상술 후의 조직학적 비교 연구

Histological Comparative Study of Rabbit Maxillary Sinus Augmentation with Bio-Oss and β-TCP

  • 문용석 (대구가톨릭대학교 의과대학 해부학교실)
  • Moon, Yong-Suk (Department of Anatomy, College of Medicine, Catholic University of Daegu)
  • 투고 : 2018.08.03
  • 심사 : 2018.10.15
  • 발행 : 2018.10.30
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초록

본 연구는 토끼의 상악동에 Bio-Oss와 ${\beta}-TCP$를 이식한 후 골 재생 과정을 조직학적으로 비교하기 위하여 수행되었다. 12마리의 수컷 토끼를 4마리씩 3군으로 구분하였다. 토끼의 양쪽 상악동 점막을 거상한 후 한쪽은 Bio-Oss를 이식하였고, 다른 쪽은 ${\beta}-TCP$를 이식한 후 본래의 골편으로 창을 봉합하였다. 2주, 4주 및 8주 후에 토끼를 희생시키고 조직절편을 만든 후 Bio-Oss군과 ${\beta}-TCP$군의 골 재생 양상을 비교하였다. 조직계측학적 분석을 위하여 각각의 조직절편에 hematoxylin-eosin, Masson trichrome 및 tartrate-resistant acid phosphatase 염색을 하였고, proliferating cell nuclear antigen (PCNA), type I collagen 및 osteocalcin의 발현 양상을 비교하기 위하여 면역조직화학 염색을 하였다. 광학현미경 시야에서 계측프로그램을 이용하여 계측하고 분석하여 다음과 같은 결과를 얻었다. Bio-Oss군과 ${\beta}-TCP$군 모두 2주군에서 초기 골 형성이 시작되었고, 4주군에서는 각 이식재 입자의 표면에 형성된 다량의 신생골이 관찰되었으며, 8주군에서는 신생골의 골량이 더 증가되어 있었고 층판골과 골수조직도 관찰되었다. 신생골의 양은 4주군까지 두 군이 비슷하였으나, 8주군에서는 ${\beta}-TCP$군에서 유의한 증가가 계측되었다. 이식재의 양은 4주군부터 8주군까지 ${\beta}-TCP$군에서 유의하게 감소되었으며, 파골세포의 수는 4주군에서 8주군까지 ${\beta}-TCP$군에서 유의하게 증가되어 있었다. PCNA에 대한 면역반응성은 8주군에서 감소되었지만 두 군간의 유의한 변화는 없었다. Type I collagen의 발현은, 2주군에서는 ${\beta}-TCP$군에서 유의하게 증가되었지만, 8주군에서는 Bio-Oss군에서 유의한 증가가 관찰되었다. Osteocalcin에 대한 면역반응성은 8주까지 증가되었으며 두 군간의 유의한 차이는 없었다. 이러한 조직학적 결과들은 임플란트를 위한 이식재의 선택에 도움을 줄 수 있다. 이상의 결과들을 종합하면 Bio-Oss와 ${\beta}-TCP$는 모두 검증된 이식재 이지만, 토끼의 상악동 거상술에서는 ${\beta}-TCP$가 좀 더 우수한 골 재생 결과를 보였다.

The purpose of this animal study was to evaluate, by histological analysis, bone regeneration in rabbit maxillary sinuses with an anorganic bovine graft (Bio-Oss) and a ${\beta}-tricalcium$ phosphate (${\beta}-TCP$) grafting. Bilateral sinus augmentation procedures were performed in 12 adult male rabbits. Rectangular replaceable bony windows were made with a piezoelectric thin saw insert. In the Bio-Oss group, Bio-Oss was grafted and in the ${\beta}-TCP$ group, ${\beta}-TCP$ was grafted and covered by replaceable bony windows. The animals were sacrificed at 2, 4, and 8 weeks after the surgical procedure. The augmented sinuses were evaluated by histomorphometric analysis using hematoxylin-eosin, Masson trichrome, and tartrate-resistant acid phosphatase stains and also by immunohistochemical analysis of proliferating cell nuclear antigen (PCNA), type I collagen, and osteocalcin content. Histologically, new bone formation was found on the surface of Bio-Oss and ${\beta}-TCP$ particles from 2 weeks and continued to 8 weeks. Significant higher new bone formation was revealed in the ${\beta}-TCP$ group than in the Bio-Oss group at 8 weeks. The amount of graft materials was significantly decreased in the ${\beta}-TCP$ group and the number of osteoclasts was significantly increased in the ${\beta}-TCP$ group from 4 to 8 weeks. Immunoreactivity to PCNA was reduced at 8 weeks. The expression of type I collagen was significantly increased in the ${\beta}-TCP$ group at 2 weeks, but was significantly increased in the Bio-Oss group at 8 weeks. Immunoreactivity to osteocalcin was increased from 2 to 8 weeks. These histological results can help in the selection of graft materials for implants. Both Bio-Oss and ${\beta}-TCP$ are proven graft materials, however, these results indicate that ${\beta}-TCP$ showed better bone regeneration results in rabbit maxillary sinus augmentation.

키워드

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