공초점레이저주사현미경을 이용한 심미수복재와 상아질의 접착계면에 관한 연구
A CONFOCAL LASER SCANNING MICROSCOPIC STUDY ON THE INTERFACE BETWEEN TOOTH COLORED RESTORATIVE MATERIALS AND DENTIN
소속 상세정보
박병철
조영곤/문주훈
KMID : 0362320000250030313
Abstract
The purpose of this study was to evaluate on the interfacial morphology between dentin and restorative materials.
In this in vitro study. the cavity wall reiterated with 3 different kinds of tooth colored restorative materials [resin-modified Glass monomer cement (Fuji Ⅱ LC) , composite resin (Z-100) , composer (Dyract)] . The thirty extracted human molar teeth without caries and/or restorations are used. The experimental teeth were randomly divided into three groups of ten teeth each. In each group, Wedge shaped cavities (width: 3mm. length: 2mm, depth: 1.5mm) were prepared at the cementoenamel junction on buccal and lingual surfaces. The adhesive of composite resin were mixed with rhodamine B. Primer of composite resin, Prime & Bond 2.1 of Dyract and liquid of Fuji Ⅱ LC were mixed with fluorescein. In group 1, the cavity wall was treatment with dentin conditioner, and then reiterated with Fuji Ⅱ LC. In group 2, the cavity wall was treatment with Prime & Bond 2.1 and then reiterated with Dyract.
In group 3, the cavity wall was etching with 10% maleic acid, applied with primer and bonding agent and then reiterated with Z-100.
The interface between dentin and restorative materials was observed by fluoresence imaging with a confocal laser scanning microscope.
The results were as follows :
1.In Glass ionomer group, adaptation of resin modified Glass-ionomer restoration against cavity wall is tight, but the crack formed inside of restoration were observed.
2.In Dyract group, the penetration of resin tag is shorter and the width of hybrid layer is narrower than composite resin group.
3.In Z-100 group, primer penetrated deeply through dentinal tubule, Also bonding agent was penetrated along the primer, but the penetration length is shoater than primer part, and in 3-D image. the resin tag is conical shape and lateral branch is observed.
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