Apatite-Wollastonite Glass-Ceramics 材料開發 및 치면열구전색재로의 이용을 위한 동물실험 연구
AN ANIMAL STUDY ON APATITE WOLLASTONIT CERAMIC FOR 31O-MATERIAL AS FISSURE SET
金龍成, 이연희, 申承澈, 小久保正, 金豪健,
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金龍成 ( ) - 단국대학교 치과대학 예방치과
이연희 ( ) - 강원대학교 공과대학 재료공학과
申承澈 ( ) - 단국대학교 치과대학 예방치과
小久保正 ( ) - 日本 京都大學 化學硏究所
金豪健 ( ) - 한양대학교 이과대학 화학과
KMID : 0355419900140020297
Abstract
The authors has experimented with Apatite ? Wollastonite ? Glass ? Ceramic of MgO-CaOSi02-P2O5-CaF2 as biomaterials in order to find out the possibility for use of pit & fissure sealants. 2-rabbits would be selected with insertion of AWGC powder at lower anterior teeth after flap operation. X-ray taking has been done after 2 weeks and 4 weeks breedings. Extracted tooth had been used as samples for SEM observation after sacrificing every 2 weeks_: Every samples had been observed at material portion as well as tooth. Such components as Si, Ca and P had been checked by use of EDX and compared the periodic changing data. The obtained results are as follows;
1. Apatite - Wollastonite glass ceramics were prepared with the component of MgC-CaO-SiO2 P2 05 -CaF2 successfully.
2. On intraoral X-ray findings for teeth, A-W materials had been shown the slightly absorption at 2 weeks breeding sample and A-W material had been remove out by attrition otherwise it had been shown the generally radiolucent area as decalcification at 4 weeks breeding sample.
3. On SEM finding for tooth sample after insertion of A-W, the band like intermadiate zone had been found more remarkably at 2nd and 4th week breeding samples, rather than that of the sample which prepared at right after insertion. And this band zone had been fingured diffuse image by gradual.
4. Si and P might be drawn out from A-W material by disolution of A-W through the time, and it was estimated that calcium phosphate as apatite crystal, newly formed biomaterial, would be made of P component from A-W and Ca component from Tooth.
5. It was estimated that A-W material would be more useful at bone than at teeth and adaptable cement should be needed between tooth surface and A-W in case of using for pit & fissure sealant:´ So more studies for developing the adaptable cement would be needed.
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