IADR Abstract Archives

Surface treatment effect on SBS of relined-material and denture base

Objective: The purpose of the present study was to evaluate the effect of using a mixture of methyl formate-methyl acetate solutions as surface treatment agents on the shear bond strength (SBS) of a non-MMA based self cured hard reline resin to a denture base resin. Methods: Prepared forty specimens of heat cured acrylic resin denture bases (Meliodent®) in PVC tube were processed and randomly divided into 4 groups by surface treatments (n=10). Group 1 (control) were treated with adhesive agent of Ufi gel hard® according to the manufacturer's recommendation. Groups 2-4 were treated with a mixture of methyl formate-methyl acetate at various concentrations (15:85, 25:75, 35:65 % v/v, respectively) for 15 seconds. All groups were relined with a non-MMA based self cured hard reline resin (Ufi gel hard®) and stored in distilled water at 37 0C for 50±2 hours. The shear bond test was measured by the Instron 8827 Universal Testing Machine. The data were analyzed by using the oneway ANOVA and post hoc Tukey's analysis at p<0.05. Results: Means of SBS with standard deviation of group 2-4 (10.87±1.42, 10.67±1.30, 11.73±1.56 MPa, respectively) were significantly higher than that of the control group (8.27±1.05 MPa). However, there was no significant difference between group 2-4. Conclusion: These results indicated that 15 second surface treatment with a mixture of methyl formate-methyl acetate solutions enhanced more shear bond strength in the denture base resin and Ufi gel hard® than that of the control group treated with adhesive agent according to the manufacturer's recommendation.
Japanese Division Meeting
2011 Japanese Division Meeting (Hiroshima, Japan)
Hiroshima, Japan
2011

Scientific Groups
  • Osathananda, Rachanee  ( Chulalongkorn University, Bangkok, N/A, Thailand )
  • Wiwatwarapan, Chairat  ( Chulalongkorn University, Bangkok, N/A, Thailand )
  • Dental Materials