개별 치아 트레이의 재료와 형태에 따른 인상체의 정밀성에 관한 연구
A STUDY ON THE ACCURACY OF THE IMPRESSION BODY ACCORDING TO MATERIALS AND FORMS OF THE INDIVIDUAL TOOTH TRAY
류덕우, 임주환, 조인호,
소속 상세정보
류덕우 ( Ryu Duck-Woo ) - 단국대학교 치과대학 치과보철학교실
임주환 ( Lim Ju-Hwan ) - 단국대학교 치과대학 치과보철학교실
조인호 ( Cho In-Ho ) - 단국대학교 치과대학 치과보철학교실
KMID : 0362420000380020242
Abstract
Accurate impression is very important to achieve desirable prosthesis and there are many factors in taking a good impression. For example, types of impression material, types of impression tray, impression taking methods and so on. Recently individual tooth tray technique is accepted as obtaining good impression that can be applied to multiple abutment impression, heavy salivated patient, to minimize the effect of natural teeth’ s undercuts and to reduce pain during cord packing procedures. The purpose of this study was to compare the accuracy according to materials and forms of the individual tooth tray which is clinically applied nowadays. Used materials in experiment were divided into 3 types (acrylic resin, Futar’ occlusion, Blu-mousse) and forms were divided into 2 types (forming occlusal vent hole or not and forming marginal vent space or not). Stone master model from impression body and metal master model were measured by X-PLAN360d to compare occlusal surface discrepancy and marginal discrepancy. The results were as follows 1. In comparison of occlusal surface discrepancy and marginal discrepancy according to materials, groups with three materials showed no statistical difference. 2. In comparison of occlusal surface discrepancy and marginal discrepancy according to occlusal vent hole, groups with occlusal vent hole showed significantly less marginal discrepancy than groups with no occlusal vent hole(p<0.05). 3. In comparison of occlusal surface discrepancy and marginal discrepancy according to 0.5mm marginal-vent-space, groups with no 0.5mm-marginal-vent-space showed significantly less mar ginal discrepancy than groups with 0.5mm-marginal-vent-space(p<0.05). In summary, these results suggest that individual tooth tray made of 3 types of materials with occlusal vent hole and individual tooth tray made of acrylic resin with no marginal vent space showed good accuracy of impression. In addition, individual tooth tray which is made of bite registration materials may be more useful because of advantage in facility and timesaving aspect of fabrication.
키워드
Individual tooth tray;Marginal discrepancy;Vent hole;Marginal vent space
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