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A Study on Shear-Bond Strength of the Interface Between Bone and Titanium Plasma-Sprayed IMZ Implants in Rabbits

Authors
 Chong-Hyun Han  ;  Dong-Hoo Han 
Citation
 INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS, Vol.9(6) : 698-709, 1994-01 
Journal Title
INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS
ISSN
 0882-2786 
Issue Date
1994-01
MeSH
Adult ; Community Health Centers / organization & administration* ; Community Health Centers / statistics & numerical data ; Developing Countries ; Efficiency, Organizational ; Evaluation Studies as Topic ; Humans ; Korea ; Management Information Systems / statistics & numerical data* ; Patient Satisfaction / statistics & numerical data ; Socioeconomic Factors ; Task Performance and Analysis
Abstract
In this study, cylindrical titanium plasma-sprayed dell implants were divided into three groups and implanted in rabbit femurs as: (1) control, a conventional method recommended by IMZ, (2) experimental I, artificial bone defects were formed prior to implantation, and (3) experimental II, porous hydroxyapatite (HA) granules were grafted into bone defects after implantation. The rabbits were sacrificed after 8 weeks and specimens were prepared and immediately pushout-tested for shear-bond strength of the bone-implant interface. Each group was examined histologically. The results showed that mean shear strength of the bone-implant interface in the control group was 2.61 ± 0.68 MPa, in experimental I was 0.66 ± 0.32 MPa, and in experimental II was 2.28 ± 0.60 MPa. There was a significant difference between the control and experimental I and between experimental I and experimental II, but no statistically significant difference between the control and experimental II. Cortical bone formation was more advanced than cancellous bone around the implants. In the histologic study of nondecalcified specimens, control and experimental II groups showed about 55% bone or osteoid tissue in contact with titanium at the bone-implant interface. In the histologic review of undecalcified specimens, the experimental I group demonstrated about 45% bone or osteoid tissue in contact with titanium at the interface, and partial bony defects were seen in the coronal zone. In the experimental II group, direct bony contact to HA granules and infiltration of a few giant cells were seen. When porous HA granules were grafted in the randomly made bone defects around the titanium implants, bone growth was more active and implant-bone bond strength was greater than when only the implants were placed.
Full Text
http://www.quintpub.com/journals/omi/abstract.php?article_id=4144#.VDypJqizIyo
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Han, Jong Hyoun(한종현)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/195083
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