Amer A Taqa
University of Mosul, Iraq
Title: The effect of Magnetic Resonance Imaging (MRI) on some properties of acrylic resin denture base materials
Biography
Biography: Amer A Taqa
Abstract
Introduction :magnetic resonance imaging have been used nowadays as one of the accepted tool for diagnosis, estimation, and evaluation of many of human been disease; in dentistry, many of prosthodontics patients and "maxillofacial-prosthesis" patients may fall under the category who might be subjected to routine "MRI" check-up either for follow-up of certain disease or cancer patient for determination the degree of healing or metastasis, thus, there has been growing interest in the research of the possible effect of "MRI" procedure on different component of "dental appliances" wears by those patients and one of these components is "heat cured acrylic resin". Aims: the aims of this study were to evaluate the effects of "magnetic resonance imaging" on mechanical (tensile strength, hardness) physical (color change) chemical (FTIR, NMR) properties at different periods of time exposure. Material and methods: total samples of (454) were prepared from acrylic based heat cured denture material, which divided into two main groups "Clear, Pink", each main group was subdivide, into four groups according to exposure to "MRI" control;(5,15 ,30)minute each of the four sub-groups undergo different tests" tensile strength, hardness(Rockwell) test, dimensional accuracy test, color change by spectrophotometry, surface roughness, water sorption, residual monomer release "FTIR" and "NMR". Results: the results were analyzed by descriptive analysis, analysis of variance, Duncan's multiple range test and student "t" test. The results showed that there were changes in the physical properties of "heat cured" acrylic resin weather it is "Pink or Clear" after exposure to "MRI" and these changes happened at different levels and variable degrees, also it was shown that there was a slight tendency to change order of arrangement of atoms within each molecular with no well and clear evidence of chemically altering of the main material itself, at least, at circumstances of experiment.