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KMID : 0602720040080020040
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Implantology
2004 Volume.8 No. 2 p.40 ~ p.48
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A study of tissue response to platinum coated titanium alloy inserted into SpraqueDawley rat's periosteum
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Ro Young-Seon
Ryu Jae-Jun
Suh Kyu-Won
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Abstract
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Titanium is usually used in implants material for its biocompatibility from dental researchers and clinicians. Even if it is so, some failure from release of titanium ion and corrosion reaction is reported. In this study, the tissue response of platinum coated titanium alloy was studied by observing the osseointegration surrounding the implants. Platinum coated titanium disc were placed on subperiosteal area of calvarium in 58 Spraque-Dawley rats. After 2, 4, 8, 12 weeks, the disc were removed en block with surrounding bone and periosteum. Section were stained with Hematoxylin-eosin and Masson's trichrome after fixation and decalcification. Tissue change between platinum coated titanium alloy, periosteum and bone was examined by light microscopy. It increases fibrous tissue and vascularity. but, there is no acute inflammation and new bone apposition in tissue surrounding platinum coated titanium alloy. Although platinum has a low allergenic potential, good corrosion resistance, and good strength, it is not osseointegrated with surrounding bone. It is not satisfied to biocompatibility as a implant material. These result indicate that platinum coated titanium alloy is not appropriate for implant material.
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KEYWORD
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Biocompatibility, Corrosion reaction, Osseointegraton, Platinum
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