Mohamed Taha Talaat <br/><br/>
A three dimensional comparative study of two slow maxillary expanders /  
 دراسة ثلاثية الابعاد لمقارنة جهازين للتوسيع البطئ للفك العلوى  
Mohamed Taha Talaat ; Supervised Hisham Ahmed Mahmoud Afifi , Mona Mohamed Salah Fayed 
 - Cairo :   Mohamed Taha Talaat ,   2013 
 - 123 Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Orthodontics 
<br/><br/> Purpose : To evaluate three dimensionally the dentoalveolar changes concurrent with maxillary expansion utilizing Quad - helix appliance . Results :Quad - helix appliance resulted in statistically significant increase in post - expansion measurements of U3 coronal width U4 coronal width U5 coronal width U5 apical width and U6 coronal width than pre-expansion measurements 
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<br/><br/><label>Subjects--Index Terms: </label>Quad - helix appliance Quad - helix appliance Slow maxillary expansion