Journal of Research and Advancement in Dentistry
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Year : 2019
Volume : Volume 10
Issue : Issue 3
Address for correspondence :
Dr. Geeta Paul.
drrahulpaul@gmail.com
Background: To evaluate the effect of aluminum oxide on flexural strength of heat activated denture base resin. A standard stainless-steel mold measuring 65mm x 10mm x 2.5mm was made for the fabrication of 180 samples which were then divided into 6 groups of 30 samples each. The 6 groups were as follows, Group A (Control Group): the unmodified denture base resins; Group B, Group C, Group D, Group E and Group F were the modified denture base resins with varied particle size such as, 5µ, 10µ, 15µ, 20µ, 25µ and varied concentration such as 5%, 10%, 15%, by wt. Aluminum oxide powder respectively. It was found that increase in the particle size of aluminum oxide in PMMA resin increases the flexural strength of heat polymerized PMMA linearly. Flexural strength has also shown a linear increase, when the concentration of aluminum oxide was increased from 5 to 10% but a decline in flexural strength was seen when the concentration was further increased to 15%.
Keywords: Denture base resin, Aluminum oxide, Flexural strength.
