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Spontaneous bone regeneration after enucleation of jaw cysts: a comparative study of panoramic radiography and computed tomography

악골 낭종의 적출술 후 골재생에 대한 파노라마 촬영과 컴퓨터 단층촬영의 비교 분석

  • Kim, Taek-Sung (Department of Oral and Maxillofacial surgery, College of Dentistry, Dankook University) ;
  • Lee, Jae-Hoon (Department of Oral and Maxillofacial surgery, College of Dentistry, Dankook University)
  • 김택성 (단국대학교 치과대학 구강악안면외과학교실) ;
  • 이재훈 (단국대학교 치과대학 구강악안면외과학교실)
  • Received : 2010.03.04
  • Accepted : 2010.04.05
  • Published : 2010.04.30

Abstract

Introduction: A cyst is a closed pathologic sac containing fluid or semi-solid material in central region. The most common conventional treatment for a cyst is enucleation. It was reported that spontaneous bone healing could be accomplished without bone grafting. We are trying to evaluate bone reconstruction ability by analyzing panorama radiograph and computed tomography (CT) scan with retrograde studying after cyst enucleation. In this way we are estimating critical size defect for spontaneous healing without bone graft. Materials and Methods: The study comprised of 45 patients who were diagnosed as cysts and implemented enucleation treatment without bone graft. After radiograph photo taking ante and post surgery for 6, 12, 18, 24 months, the healing surface and volumetric changes were calculated. Results: 1. Spontaneous bone healing was accomplished clinically satisfying 12 months later after surgery. But analyzing CT scan, defect volume changes indicate 79.24% which imply incomplete bone healing of defect area. 2. Comparing volume changes of defect area of CT scan, there are statistical significance between under $5,000mm^{3}$ and over $5,000mm^{3}$. The defect volume of $5,000mm^{3}$ shows $2.79{\times}1.91$cm in panoramic view. Conclusion: Bone defects, which are determined by a healed section using a panoramic view, compared to CT scans which do not show up. Also we can estimate the critical size of defects for complete healing.

Keywords

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