| PROPERTIES OF LIGHT-CURED COMPOSITE RESINS CONTAINING SrF2, GLASS FILLER |
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| SrF2계 충진재를 함유한 광중합형 복합레진의 특성 |
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김희정1, 김경남2, 최병재1, 이종갑1 |
1연세대학교 치과대학 소아치과학교실
2연세대학교 치과대학 치과재료학교실 |
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| Abstract |
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The aim of this study was to investigate the fluoride release and some mechanical properties including 3-point bending strength, amount of abrasion, surface hardness, water sorption/solubility and cytotoxicity of the newly developed composite resins containing 8, 16, 24 wt% SrF2 glass filler (VF8, VF16, VF24) and four commercially available composite resins, Heliomolar(HE), Verdonfil(VE), Z100(ZH) and Aelitefil(AE). To investigate cytotoxic effect, agar overlay assay was done. Amount of fluoride released into distilled water was measured over a 62-days period from VF8, VF16, VF24 and HE. Results were as follows: 1. Experimental composite resins showed similar mechanical properties to commercial composite resins, but 3-point bending strength and surface hardness of experimental composite resins were inferior to ZH. 2. Over a 62-day Period, the amount of fluoride released was ordered: VF24>VF16>VF8>HE. In experimental composite resins, the amount of fluoride released was 9-23 times greater than HE and seemed to be proportional to the content of SrF2 glass filler. 3. Experimental composite resins and all control composite resins showed mild cytotoxicity. This study showed significantly greater fluoride release from newly developed composite resins than control(HE) and addition of SrF2 glass filler did not decrease mechanical properties or increase cytotoxicity of composite resin. The results from this study imply that newly developed composite resin have adequate mechanical properites, mild cytotoxicity and some potential for secondary caries prevention. |
| Key Words:
SrF2 glass filler, Composite resin, Mechanical property, Fluoride release, Cytotoxicity |
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