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Effects of biphasic calcium phosphate bone substitute on circumferential bone defects around dental implants in dogs.

Authors
 Sungtae Kim  ;  Ui-Won Jung  ;  Yong-Keun Lee  ;  Seong Ho Choi 
Citation
 INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS, Vol.26(2) : 265-273, 2011 
Journal Title
INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS
ISSN
 0882-2786 
Issue Date
2011
MeSH
Alveolar Bone Loss/surgery* ; Alveolar Process/pathology ; Animals ; Bone Substitutes/therapeutic use* ; Calcium Phosphates/therapeutic use* ; Coated Materials, Biocompatible/chemistry ; Dental Etching/methods ; Dental Implants* ; Dental Materials/chemistry ; Dental Prosthesis Design ; Dogs ; Durapatite/chemistry ; Image Processing, Computer-Assisted ; Male ; Osseointegration/physiology ; Osteogenesis/physiology ; Porosity ; Surface Properties ; Time Factors ; Tissue Scaffolds/chemistry ; Titanium/chemistry ; Wound Healing/physiology
Keywords
biphasic calcium phosphates ; bone-to-implant contact ; circumferential bone defect ; implant ; remaining defect depth
Abstract
PURPOSE: Resolution of defects surrounding dental implants can be achieved through the placement of rough-surfaced implants with bone substitutes. The aim of this study was to evaluate the effect of biphasic calcium phosphates (BCP) on the healing of circumferential bone defects surrounding dental implants.

MATERIALS AND METHODS: The premolars were removed in four mongrel dogs, and three different types of experimental sites were created: BCP, control, and ungrafted sites. In all groups, implants were placed in the edentulous area. In the BCP group, gap defects with 2-mm diameters were surgically created around each implant and the defects were filled with BCP bone substitute. In the control group, gap defects were not made around the implants. In the sham surgery group, gap defects were prepared but were not filled with BCP bone substitute. The defects were evaluated histologically and histometrically after 8 and 16 weeks. One-way analysis of variance and the independent t test were used for statistical analysis (α = .01).

RESULTS: Histometric measurements in the groups after 8 weeks showed the smallest remaining defect depths (RDDs) in the control group (17%). The RDD in the BCP group (39%) was greater than in the control group, and the ungrafted sites group had the greatest RDD (62%). There was no difference in bone-to-implant contact among the groups. Histometric measurements at 16 weeks showed that the RDD in the ungrated sites group (57%) was greater than in both the control (12%) and the BCP (31%) groups.

CONCLUSION: Within the limitations of this study, BCP bone substitute contributed to defect resolution and maintained space for new bone ingrowth before 8 weeks. No additional contribution to defect resolution by BCP was found after 8 weeks.
Full Text
http://www.quintpub.com/journals/omi/abstract.php?article_id=10639
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Tae(김성태)
Lee, Yong Keun(이용근)
Jung, Ui Won(정의원) ORCID logo https://orcid.org/0000-0001-6371-4172
Choi, Seong Ho(최성호) ORCID logo https://orcid.org/0000-0001-6704-6124
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/93099
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