Tensile testing , a method used to demonstrate the effect of organic solvents on acrylic teeth denture base resin bond strength

Abstract

The evaluation of the artificial acrylic teeth denture base repair resin bond strength in tensile represents the main reason of this study. Large size artificial acrylic molars were used to mille 50 acrylic cylinders. The cylinders were randomly assigned in five experimental groups, ten cylinders each. The bonding areas represented by the flat surfaces of the cylinders were submitted to a different treatment. Group 1: polished (control group), Group 2: polished+methyl methacrylate, Group 3: sandblasting + methyl methacrylate, Group 4: sandblasting+universal repairing adhesive (Clearfil RepairKuraray), Group 5: polished+dichlormethane. The sandblasting procedures were realized using 50 μm alumina, 30 seconds, from 10 mm distance. Self-cured denture base repair resin (Duracryl – Spofa Dental) was used for manufacturing the bonding test specimens, according to the ADA specification No. 15. Each specimen was stored for 30 days in distilled water and then tested in tensile at a speed of 1 mm/min. The mean values of the tensile bond strength test registered were statistically significant among groups, ranging from 13,5 MPa (group 4) to 35,9 MPa ( group 5). Dichlormethane treatment enhanced bond strength to the artificial teeth, for this reason could be considered as a laboratory and clinical procedure in order to improve the quality of bonding. Keywords—acrylic teeth, chemical treatment, denture base resin, dicloromethane, tensile strength

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Cite this paper

@inproceedings{Stoia2011TensileT, title={Tensile testing , a method used to demonstrate the effect of organic solvents on acrylic teeth denture base resin bond strength}, author={Adelina Elena Stoia and Cosmin Sinescu and Mircea Pielmusi and Marius Enescu and Anca Tudor and Roxana Otilia Rominu and Mihai Rom{\^i}nu}, year={2011} }