Effect of light-curing, pressure, oxygen inhibition, and heat on shear bond strength between bis-acryl provisional restoration and bis-acryl repair materials

Ji Suk Shim, Jeong Yol Lee, Yeon Jo Choi, Sang-Wan Shin, Jae Jun Ryu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Purpose: This study aimed to discover a way to increase the bond strength between bis-acryl resins, using a comparison of the shear bond strengths attained from bis-acryl resins treated with light curing, pressure, oxygen inhibition, and heat. Materials and methods: Self-cured bis-acryl resin was used as both a base material and as a repair material. Seventy specimens were distributed into seven groups according to treatment methods: pressure - stored in a pressure cooker at 0.2 Mpa; oxygen inhibition- applied an oxygen inhibitor around the repaired material,; heat treatment - performed heat treatment in a dry oven at 60°C, 100°C, or 140°C. The shear bond strength was measured with a universal testing machine, and the shear bond strength (MPa) was calculated from the peak load of failure. A comparison of the bond strength between the repaired specimens was conducted using one-way ANOVA and Tukey multiple comparison tests (α=05). Results: There were no statistically significant differences in the shear bond strength between the control group and the light curing, pressure, and oxygen inhibition groups. However, the heat treatment groups showed statistically higher bond strengths than the groups treated without heat, and the groups treated at a higher temperature resulted in higher bond strengths. Statistically significant differences were seen between groups after different degrees of heat treatment, except in groups heated at 100°C and 140°C. Conclusion: Strong bonding can be achieved between a bis-acryl base and bis-acryl repair material after heat treatment.

Original languageEnglish
Pages (from-to)47-50
Number of pages4
JournalJournal of Advanced Prosthodontics
Volume7
Issue number1
DOIs
Publication statusPublished - 2015

Keywords

  • Bis-acryl
  • Heat
  • Relining
  • Repair
  • Shear bond strength

ASJC Scopus subject areas

  • Dentistry (miscellaneous)
  • Oral Surgery

Fingerprint Dive into the research topics of 'Effect of light-curing, pressure, oxygen inhibition, and heat on shear bond strength between bis-acryl provisional restoration and bis-acryl repair materials'. Together they form a unique fingerprint.

  • Cite this