Comparison of polymerization shrinkage of pattern resins

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Statement of problem The dimensional stability, in particular polymerization shrinkage, of pattern resins affects the accuracy of implant prosthesis fabrication. Recently introduced photopolymerizing pattern resins are easy to use, but their shrinkage needs to be determined and compared with traditional autopolymerizing pattern resins. Purpose The purpose of the study was to compare the polymerization shrinkage of photopolymerizing pattern resins with autopolymerizing pattern resins. Material and methods Two autopolymerizing (DuraLay, GC Pattern resin) and 2 photopolymerizing (Primopattern LC Gel, Primopattern LC Paste) pattern resins were tested. The sample size was 10 for each group. Polymerization shrinkage was determined by measuring the change in area dimensions with image analysis. The percentage of volumetric shrinkage was calculated, and the results were statistically analyzed with ANOVA, followed by the Student-Newman-Keuls post hoc test (α=.05). Results The volumetric shrinkage values (%; mean ±standard deviation) for GC Pattern Resin were 5.72 ±0.89; for DuraLay, 5.07 ±1.36; for Primopattern LC Gel, 5.42 ±1.83; and for Primopattern LC Paste, 7.43 ±0.62. The volumetric shrinkage of the Primopattern LC Paste was significantly higher than that of the other 3 materials. Conclusions The photopolymerizing pattern resin in gel form (Primopattern LC Gel) had a similar shrinkage value to the autopolymerizing pattern resins (DuraLay and GC Pattern Resin). However, the photopolymerizing pattern resin in paste form (Primopattern LC Paste) shrank significantly more than the other 3 materials tested.

Original languageEnglish (US)
Pages (from-to)293-298
Number of pages6
JournalJournal of Prosthetic Dentistry
Volume112
Issue number2
DOIs
StatePublished - Jan 1 2014

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Ointments
Polymerization
Gels
Sample Size
Prostheses and Implants
Analysis of Variance
Students
GC Pattern Resin
Duralay

All Science Journal Classification (ASJC) codes

  • Oral Surgery

Cite this

Comparison of polymerization shrinkage of pattern resins. / Gibbs, Sarah B.; Versluis, Antheunis; Versluis, Daranee; Ahuja, Swati.

In: Journal of Prosthetic Dentistry, Vol. 112, No. 2, 01.01.2014, p. 293-298.

Research output: Contribution to journalArticle

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abstract = "Statement of problem The dimensional stability, in particular polymerization shrinkage, of pattern resins affects the accuracy of implant prosthesis fabrication. Recently introduced photopolymerizing pattern resins are easy to use, but their shrinkage needs to be determined and compared with traditional autopolymerizing pattern resins. Purpose The purpose of the study was to compare the polymerization shrinkage of photopolymerizing pattern resins with autopolymerizing pattern resins. Material and methods Two autopolymerizing (DuraLay, GC Pattern resin) and 2 photopolymerizing (Primopattern LC Gel, Primopattern LC Paste) pattern resins were tested. The sample size was 10 for each group. Polymerization shrinkage was determined by measuring the change in area dimensions with image analysis. The percentage of volumetric shrinkage was calculated, and the results were statistically analyzed with ANOVA, followed by the Student-Newman-Keuls post hoc test (α=.05). Results The volumetric shrinkage values ({\%}; mean ±standard deviation) for GC Pattern Resin were 5.72 ±0.89; for DuraLay, 5.07 ±1.36; for Primopattern LC Gel, 5.42 ±1.83; and for Primopattern LC Paste, 7.43 ±0.62. The volumetric shrinkage of the Primopattern LC Paste was significantly higher than that of the other 3 materials. Conclusions The photopolymerizing pattern resin in gel form (Primopattern LC Gel) had a similar shrinkage value to the autopolymerizing pattern resins (DuraLay and GC Pattern Resin). However, the photopolymerizing pattern resin in paste form (Primopattern LC Paste) shrank significantly more than the other 3 materials tested.",
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N2 - Statement of problem The dimensional stability, in particular polymerization shrinkage, of pattern resins affects the accuracy of implant prosthesis fabrication. Recently introduced photopolymerizing pattern resins are easy to use, but their shrinkage needs to be determined and compared with traditional autopolymerizing pattern resins. Purpose The purpose of the study was to compare the polymerization shrinkage of photopolymerizing pattern resins with autopolymerizing pattern resins. Material and methods Two autopolymerizing (DuraLay, GC Pattern resin) and 2 photopolymerizing (Primopattern LC Gel, Primopattern LC Paste) pattern resins were tested. The sample size was 10 for each group. Polymerization shrinkage was determined by measuring the change in area dimensions with image analysis. The percentage of volumetric shrinkage was calculated, and the results were statistically analyzed with ANOVA, followed by the Student-Newman-Keuls post hoc test (α=.05). Results The volumetric shrinkage values (%; mean ±standard deviation) for GC Pattern Resin were 5.72 ±0.89; for DuraLay, 5.07 ±1.36; for Primopattern LC Gel, 5.42 ±1.83; and for Primopattern LC Paste, 7.43 ±0.62. The volumetric shrinkage of the Primopattern LC Paste was significantly higher than that of the other 3 materials. Conclusions The photopolymerizing pattern resin in gel form (Primopattern LC Gel) had a similar shrinkage value to the autopolymerizing pattern resins (DuraLay and GC Pattern Resin). However, the photopolymerizing pattern resin in paste form (Primopattern LC Paste) shrank significantly more than the other 3 materials tested.

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