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KMID : 0370819930080010149
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Yonsei Journal Dental Science
1993 Volume.8 No. 1 p.149 ~ p.161
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SCANNING ELECTRON MICROSCOPIC COMPARISONS OF TITANIUM PLASMA SPRAYED IMPLANT AND HYDROXYAPATITE COATED IMPLANT TO BONE INTERFACE IN PERIODONTALLY INVOLVED EXTRACTION SOCKETS IN DOGS
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이정욱
채중규/조규성/문익상/김종관
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Abstract
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Dental implant was introduced into dentistry for the treatment of hard and soft tissue deformation due to tooth loss. Osseointegrated implants were developed in various types.
The purpose of this study is to evaluate the nature of the interface between bone and two types of implants(TPS implant, HA coated implant). In this study, TPS implants and HA coated implants were installated on periodontally involved extraction
sockets
of adult dogs.
Experimental periodontitis was induced on premolars of adult dogs by the ligation of orthodontic threads after surgical creating periodntal defect. Thereafter following the extraction of each tooth, TPS implants and HA coated implants were
inserted
into
the extraction socket immediately. Control group was TPS implants, and experimental group was HA coated implants. Thereafter dogs were sacrificed at 12 weeks and the specimens were prepared for scanning electron microscopy.
@ES The conclusion of this study were as follows:
@EN 1. In both, control and experimental group, osseointegration was observed.
2. Experimental group demonstrated significantly more direct contact compared to control group in all the implant surfaces.
3. In implant apical hole area, the control and experimental group had areas of connective tissue interrupting the bone to implant contact.
the connective tissue in fibrous integration area was dominated by collagen bundle running in different direction.
4. In the experimental group, bone to HA interface showed an intimate contact. The HA coating was detached from the titanium surface and some fracture lines were present inside the thickness of the HA coating.
5. HA coating was stable(50μthickness).
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KEYWORD
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