In vitro wear behavior between enamel cusp and three aesthetic restorative materials: Zirconia, porcelain, and composite resin
장용석, Nguyen Thuy-Duong Thi, 고영한, 백병주, 이민호, 배태성,
소속 상세정보
장용석 ( Jang Yong-Seok ) - Chonbuk National University School of Dentistry Department of Dental Biomaterials
( Nguyen Thuy-Duong Thi ) - Hue University of Medicine and Pharmacy Odonto-stomatology Faculty
고영한 ( Ko Young-Han ) - Jeonbuk National University School of Dentistry Department of Pediatric Dentistry
백병주 ( Baik Byeong-Ju ) - Jeonbuk National University School of Dentistry Department of Pediatric Dentistry
이민호 ( Lee Min-Ho ) - Chonbuk National University School of Dentistry Department of Dental Biomaterials
배태성 ( Bae Tae-Sung ) - Chonbuk National University School of Dentistry Department of Dental Biomaterials
Abstract
PURPOSE: The aim of this study was to identify the effects of three aesthetic restorative materials on the wear between tooth and restoration by a pin-on-disk manner.
MATERIALS AND METHODS: Six aesthetic restorative materials were used to prepare disk specimens for wear test, which were Lava Zirconia as zirconia group, Vintage MP and Cerabien ZR as veneering porcelain group, Gradia Direct microhybrid composite containing prepolymerized fillers, Filtek Z250 microhybrid composite containing zirconia glass and colloidal silica particles, and Filtek Z350 nanocomposite as composite resin group. Vertical loss of the worn cusp, change of the surface roughness of the restoration materials, and the surface topography were investigated after wear test under 9.8-N contact load.
RESULTS: The porcelain groups (Vintage MP and Cerabien ZR) caused the largest vertical loss of teeth when compared with those of the composite resin and zirconia groups, and Filtek Z250 microhybrid composite results in the second-largest vertical loss of teeth. The surface of Filtek Z350 nanocomposite was deeply worn out, but visible wear on the surface of the zirconia and Gradia Direct microhybrid composite was not observed. When the zirconia surface was roughened by sand-blasting, vertical loss of teeth considerably increased when compared with that in the case of fine polished zirconia.
CONCLUSION: It was identified that microhybrid composite resin containing a prepolymerized filler and zirconia with reduced surface roughness by polishing were the most desirable restorative materials among the tested materials to prevent the two-body wear between aesthetic restorative material and tooth.
키워드
Dental restoration; Dental abrasion; Restoration wear; Antagonist wear resistance
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