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치아 수복용 불소함유 glass filler의 제조 및 특성

Other Titles
 Preparation and Characterization of Glass Filler Containing Fluoride for Dental Restorative Materials 
Authors
 김대성  ;  최세영  ;  김경남  ;  김광만  ;  김중곤 
Citation
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.25(3) : 273-282, 1998 
Journal Title
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지) 
ISSN
 1225-1631 
Issue Date
1998
Keywords
pH ; leaching test ; dissolution ; fluorine ; solubility ; restorative glass filler
Abstract
The purpose of this study was the reaching test of restorative glass according to composition. Mixtures of SrF₂, CaF₂and SiO₂were fused in platinum crucible. The glasses were ground and fraction which passed through a 400 mesh (38㎛) sieve were collected. The powder specimens were analyzed by a DTA and XRD. Then powder specimen were inserted to D. I. water with various of dissolution time and composition at 37℃. Fluoride ion, cation release, solubility, and pH change were estimated. It was clear that the glasses were formed except S0.65. In S0.40, Tg, Ts, and Tc were 630, 672, and 813℃ respectively. In initial 0.5 hrs., amounts of released fluoride ion and cation were about 90% of total released amounts and released rate was decreased with dissolution time. Amount of released fluoride ion and cation were increased with decreasing SiO₂ in glass filler. And released rate was decreased rapidly by adding CaF₂. This was caused by structural variation in glass filler. Solubility was similar tendency with ion released. The pH of D.I. water was 4.5. But in intial 0.5 hrs., pH was 8.2∼9.8., and decreased according to dissolution time. This is caused by ionic changing with cation and H* ion.
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176929
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