섬유강화형 복합레진전장관의 변연적합도 및 변연누출에 관한 연구
MARGINAL FITNESS AND MARGINAL LEAKAGE OF FIBER-REINFORCED COMPOSITE CROWNS DEPENDING UPON LUTING CEMENTS
김선종, 신상완, 한중석, 서규원,
소속 상세정보
김선종 ( Kim Sun-Jong ) - 고려대학교 의과대학 치과학교실
신상완 ( Shin Sang-Wan ) - 고려대학교 의과대학 치과학교실
한중석 ( Han Jung-Suk ) - 이화여자대학교 의과대학 치과학교실
서규원 ( Suh Kyu-Won ) - 고려대학교 의과대학 치과학교실
KMID : 0362420000380050618
Abstract
As Fiber-reinforced composite restorations cannot be made without leaving a marginal gap, luting cements play a pivotal role in sealing the margins as a prevention against margnal leakage. A recently introduced adhesive resin cement system is claimed to adhere chemically, as well as mechanically, to tooth substances, dental alloys and porcelain. But when considering the clinical variation, conventional cementation using Zinc Phosphate and Glass-Ionomer can be requested. A vitro study was undertaken to compare microleakage and marginal fitness of Fiberreinforced composite crowns(Targis/Vectris) depending upon luting cements. Fifty non-carious human premolar teeth were randomly divided into five experimental groups of 10 teeth each and luted with five luting cements.(Bistite II., Super-bond., Variolink II.), Zinc phosphate and Glass- Ionomer cement) After 24 hours of being luted, all specimens were thermocycled 300 times through water bath of 5degrees C and 55degrees C in each bath, then the quality of the marginal fitness was measured by the Digital Microscope and marginal leakage was characterized using Dye Penetration technique and the Digital Microscope The results were as follows : 1. The mean values of marginal fit were Bistite II(46.78micrometer), Variolink II(56.25micrometer), Super-Bond(56.78 micrometer), Glass-Ionomer(99.21micrometer), Zinc Phosphate(109.49micrometer) indicated a statistically significant difference at p<0.001. 2. The mean microleakage values of tooth-cement interface, restoration-cement interface were increased in the order of Variolink II, Bistite II, Super-Bond, Glass-Ionomer, Zinc Phosphate. 3. Crowns luted with resin cement (Bistite II, Super-Bond, Variolink II, etc) exhibited less marginal gap and marginal leakage than those luted with conventional Glass-Ionomer and Zinc Phosphate cement. 4. The results indicated that all five luting systems yielded comparable and acceptable marginal fit.
키워드
Marginal fitness;Marginal leakage;Fiber reinforced composite(FRC);Ceromer;Thermocycling
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