38 24

Cited 0 times in

강화형 글라스 아이오노머 합착용 시멘트의 접합강도 및 변연누출에 대한 연구

Other Titles
 COMPARISON OF SHEAR BOND STRENGTH AND MARGINAL LEAKAGE OF RESIN MODIFIED GLASS IONOMER CEMENTS 
Authors
 박혜양  ;  오남식  ;  이근우  ;  이호용 
Citation
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.35(4) : 647-661, 1997 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
ISSN
 0301-2875 
Issue Date
1997
Abstract
The resin modified glass ionomer cements(RMGICs) have been used for years since 1989. Recently it has been developed for luting of fixed restorations. To evaluate the bond strength and marginal leakage of RMGICs for luting usage, the 80 extracted human molars which had uniform area of exposed dentin were cemented with 3 types of RMGICs(Fuji Duet, Advance, Vitremer), a conventional Glass Ionomer Cement(GIC-Fuji I), and a resin cement(Panavia 21) to base metal alloy(Ni-Cr-Be). After thermocycling the specimens were immersed in basic fuschin dye for measuring marginal leakage. The shear bond strength was measured with Instron and the maximum dye penetration was measured to 0.1mm. The type of fractured patterns were determined with stereoscope(×7.5). The results are as follows. 1. The difference between 3 RMGICs and a conventional GIC in shear bond strength was not statistically significant. It seemed that RMGICs had lower shear bond strength than resin cement.(p<0.01) 2. The mean scores of marginal leakage had no significant difference between the resin cement and 3 RMGICs but it was much higher in conventional GIC than the RMGICs(p<0.05) 3. It was determined that the manufacturer and the methods of dentin pretreatment determined the pattern of fracture surface and the frequency of adhesive failure between teeth and 3 RMGICs standed as in following order-Vitremer, Advance, Fuji Duet.(p<0.01) When the fracture pattern was analyzed, it could be said that the materials and the method of dentin pretreatment have much effect on bonding states. This means that the dentin bonding agents should be improved. But the limited products in this experiment can not evaluate the physical properties of the entire RMGICs. Therefore a further study which can evaluate various RMGICs should be in progress to develop better cements.
Files in This Item:
T199701462.pdf Download
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Keun Woo(이근우) ORCID logo https://orcid.org/0000-0002-3153-190X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/177903
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links