Nancy Taky Sanad Senada  <br/><br/>
The effect of laser surface treatment of lithium disilicate ceramic on shear bond strength to adhesive resin cements /  
  تأثير  ط زف اوم دات زر  وة ارط ا  ن ازف و ات الراتنجى  
Nancy Taky Sanad Senada ; Supervised Mohamed Zamzam , Jylan F. Elguindy  
 - Cairo :   Nancy Taky Sanad Senada  ,   2013 
 - 80 Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics  
<br/><br/> Objectives: The aim of this study was to evaluate the effect of hydrofluoric acid and laser surface treatment on the  surface alteration and shear bond strength of Lithium Disilicate with adhesive Resin cements.      Materials and Methods: A total number of 40 discs were milled from 20 IPS e-max CAD blocks. The discs were  divided according to the surface treatment into 2 groups ( 20 disc each): Group A ( n=20) received hydrofluoric acid  surface treatment < 5% (control group) Group B ( n=20) received carbon dioxide laser surface treatment Each group  was further subdivided into two subgroups according to the adhesive system used to cement each pair of discs together  Subgroup A ( n= 10) :cementation with total etch adhesive system Subgroup B ( n= 10 ) : cementation with self  adhesive system SLM was used to calculate an average of surface roughness (Ra) of the average height of every  specimen, expressed in om, which can be assumed as reliable indices of surface roughness cementation was  accomplished according to the manufacturers recommendations using total etch and self- adhesive systems shear bond  strength was measured. All data were recorded, evaluated and statistically analyzed 
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<br/><br/><label>Subjects--Index Terms: </label>Adhesive resin cements Lithium disilicate cerami  Shear bond strength