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Bone Regeneration and Collagen Fiber Orientation Around Calcium Phosphate–Coated Implants with Machined or Rough Surfaces: A Short-Term Histomorphometric Study in Dog Mandibles

Title
Bone Regeneration and Collagen Fiber Orientation Around Calcium Phosphate–Coated Implants with Machined or Rough Surfaces: A Short-Term Histomorphometric Study in Dog Mandibles
Authors
Jung-Seok Lee;Yae-Won Kim;Seong-Ho Choi;Ui-Won Jung
Issue Date
2013
Journal Title
International Journal of Oral & Maxillofacial Implants
ISSN
0882-2786
Citation
International Journal of Oral & Maxillofacial Implants, Vol.28(5) : 1395~1402, 2013
Abstract
PURPOSE: The aim of this study was to compare bone formation and tissue reactions around implants with a calcium phosphate (CaP)-coated machined surface (CPMS) and a CaP-coated rough surface (CPRS) at critical-sized circumferential ridge defects in dogs after 4 and 8 weeks. MATERIALS AND METHODS: All mandibular premolars were extracted bilaterally from five male mongrel dogs. After 8 weeks, circumferential marginal defects (2 mm wide and 5 mm deep) were created unilaterally using a customized drill at sites of CPMS and CPRS implant insertion. Four weeks later, the contralateral side was prepared using the same protocol. The dogs were sacrificed 4 weeks later. Specimens were analyzed histologically and histomorphometrically. RESULTS: Both CPMS and CPRS implants showed successful osseointegration in the apical bone area (without defects) regardless of the observation period (4 or 8 weeks). All circumferential defects were incompletely filled and osseointegration was limited at the apical area of the defect. In the unfilled defect area, collagen fibers were arranged perpendicular or oblique to the exposed implant surfaces, especially on CPRS implants. CONCLUSION: Within the limits of this study, CPMS and CPRS implants showed no statistically significant differences in osseointegration and bone regeneration in circumferential defects, along with the unique feature of collagen fibers arranged perpendicular or oblique to the exposed implant surfaces.
URI
http://quintpub.com/journals/omi/abstract.php?article_id=13598#.U3v3uqizIyo

http://ir.ymlib.yonsei.ac.kr/handle/22282913/88249
DOI
10.11607/jomi.3134
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Periodontology
Yonsei Authors
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