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PHYSICAL PROPERTIES OF RELINING DENTURE BASE RESINS WITH DIFFERENT POLYMERIZING METHODS  

Cho Suck-Kyu (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University)
Song Kwang-Yeob (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University)
Yoon Soo-Yun (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University)
Kim Mun-Young (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.40, no.4, 2002 , pp. 386-395 More about this Journal
Abstract
This study would like to measure and compare water sorption and solubility of acrylic resins, with 3 different polymerizing methods, and tensile strength between denture base resin and relining rosins. For this experiment, 3 different acrylic resins were used; heat polymerizing resin: Vertex (Dentmex, Zeist, Holland), autopolymerizing resin: Tokuso Rebase (Tokuyama Corp, Tokyo, Japan), and light curing resin: Mild Rebaron LC(GC Corp, Tokyo, Japan) The results were as follows ; 1. Tokuso Rebase showed the lowest water sorption. followed by Mild Rebaron LC and Vertex. Among resins, there were some signigicant differences (P<0.05). 2. Vertex showed the lowest solubility, followed by Mild Rebaron LC and Tokuso Rcbase. Among resins, there were some signigicant differences (P<0.05). 3. Intact Vertex showed the highest tensile strength, and Mild Rebaron LC had a more tensile strength than Tokuso Rebase. Between Vertex and the other resins, there were some signigicant differences (P<0.05) However, between Mild Rebaron LC and Tokuso Rebase, there was no statistical difference (P>0.05). About 50% of Rebaron LC showed cohesive fracture. 4. Tensile strength has more decreased after thermocycling than before, but there was no statistical difference (P>0.05).
Keywords
Relining; Denture base resin; Polymerization Water sorption; Solubility;
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