Maha Ibrahim Abdelaleem Mostafa  <br/><br/>
Biophysical study of modified portland cement for dental use /  
 دراسة بيوفيزيائية للاسمنت البورتلاندى المعدل لاستخدامه فى مجال الاسنان  
Maha Ibrahim Abdelaleem Mostafa ; Supervised Wafaa A. Khalil , Noha G. Abdelghany , Ahmed Z. Zidan 
 - Cairo :   Maha Ibrahim Abdelaleem Mostafa ,   2016 
 - 93 Leaves :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Biophysics   
<br/><br/> Since its development by Torabinejad et al. (1993) as a  root-end filling, the clinical applications of Mineral trioxide  aggregate (MTA) have been expanded. However, it is difficult to  use because of its properties of granular consistency, slow setting  time, low compressive, and initial looseness.  MTA is composed of Portland cement with the addition of  bismuth oxide as a radiopacifying agent. Both substances present  antibacterial activity and biocompatibility. Thus, studying  function and setting reaction of components of Portland cement,  as well as additives used to accelerate or improve its properties,  may be beneficial in modifying problems of MTA.  The biophysical properties of Portland cement hydrated with  different concentrations of glycerin had been studied and the  results indicated that the addition of glycerin accelerated the  setting time and improved the physical, mechanical, optical,  morphological, and thermal properties of Portland cement and did  not affect its biocompatibility  
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<br/><br/><label>Subjects--Index Terms: </label>Glycerin Mineral Trioxide Aggregate (MTA)  Modified Portland  cement