광중합형 구치부 수복재료의 중합수축량과 중합수축력

Abstract

Title: Amount of polymerization shrinkage and shrinkage stress in composites and compomers for posterior restorationPark SH*, Lee SY, Cho YS, Kim SS, Lee CJ, Kim YJ, Lee BH, Lee KS, Noh BDDept. Conservative Dentistry, Yonsei University, Seoul, KoreaThe purpose of present study was to evaluate the polymerization shrinkage stress and amount of linear shrinkage of composites and compomers for posterior restoration.For this purpose, linear polymerization shrinkage and polymerization stress were measured. For linear polymerization shrinklage and polymerization stress measurement, custom made Linometer ( R&B, Daejon, Korea) and Stress measuring machine was used ( R&B, Daejon, Korea). Compositers and compomers were evaluated; Dyract AP (Dentsply Detrey, Gumbh. German) Z100 (3M Dental Products, St. Paul, USA) Surefil (Dentsply Caulk, Milford, USA) Pyramid(Bisco, Schaumburg, USA) Synergy Compact (Coltene, Altsttten, Switzerland), Heliomolar (Vivadent/Ivoclar, Liechtenstein), and Compoglass (Vivadent Ivoclar/ Liechtenstein) were used. 15 measurements were made for each material. Linear polymerization shrinkage or polymerization stress for each material was compared with one way ANOVA with Tukey at 95% levels of confidence. For linear shrinkage; Heliomolar, Surefil<Synergy Compact, Z100<Dyract AP<Pyramid, Compoglass F (p<0.05)For Shrinkage stress; Heliomolar< Z100, Pyramid<Synergy Compact, Compoglass F<Dyract AP<Heliomolar HB, Surefil (p< 0.05)