Sarah Omar Abduljabar Alariqi <br/><br/>
Marginal gap distance and fracture resistance of two conservative all-ceramic fixed partial denture designs /  
 مسافة الفجوة الحافية ومقاومة الكسر لتصميمين محافظين من الأطقم الخزفية الجزئية المثبتة 
Sarah Omar Abduljabar Alariqi ; Supervised Eman Mohamed Anwar , Elzahraa Abdulhameed Eldwakhly , Maha Ahmed Taymour 
 - Cairo :   Sarah Omar Abduljabar Alariqi ,   2013 
 - 164 P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics 
<br/><br/> The present study aimed to investigate the vertical marginal gap distance and fracture resistance of two conservative all-ceramic fixed partial denture (FPD) designs in comparison to conventional full coverage-retained fixed partial denture. Three models were created by mounting one cast premolar in an acrylic resin block in conjunction with one of the three cast molars with a 10 mm space between them which corresponded to the dimension of a missing first molar. Fifteen posterior full-contour zirconia-based all-ceramic FPDs were fabricated using CAD/CAM technique and divided into three groups of five samples each according to the type of retainer design:- Group (1): Inlay/inlay-retained FPDs with the inlay retainer on both the premolar and molar teeth. Group (2): Inlay/onlay-retained FPDs with a premolar inlay retainer and a molar onlay retainer. Group (3): Full coverage/full coverage-retained FPDs with full coverage retainers on both the premolar and molar teeth. For all FPDs, the vertical marginal gap distance was measured using scanning electron microscope at 400 magnification. Each mounted chrome-cobalt dies were duplicated into five epoxy resin models for each tested FPD design. The fifteen FPDs were cemented on their respective epoxy resin models with self-adhesive self-cure resin cement. All samples were loaded and fracture loads (N) were measured at fracture with a computer controlled materials testing machine at a crosshead speed of 1.0 mm/min.  
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<br/><br/><label>Subjects--Index Terms: </label>Full-contour zirconia  Inlay-retained fixed partial denture     Marginal gap distance