J Korean Acad Conserv Dent.  2003 Jul;28(4):348-353. 10.5395/JKACD.2003.28.4.348.

Amount of polymerization shrinkage and shrinkage stress in composites and compomers for posterior restoration

Affiliations
  • 1Department of Conservative Dentistry, Yonsei University, Korea. sunghopark@yumc.yonsei.ac.kr
  • 2College of Dentistry, Yonsei University, Korea.

Abstract

The 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, Altstatten, 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

Keyword

Polymerization shrinkage stress; Polymerization shrinkage amount; Composite resin; Linometer; Tensiometer; Packable composite
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