Mona Said Abuser'a Mousa <br/><br/>
Comparative Study of the Surface Topography of Titanium Nitride  Coated and Titanium Nitride  Non Coated Nickel Titanium Rotary Instruments utilized in the preparation of root canals using different irrigants :   An in vitro study /  
 دراسة مقارنة لطبوغرافيا السطح لآلات علاج الجذور النيكل تيتانيوم الدوارة المغطاه وغير المغطاه بنيتريد التيتانيوم المستخدم لتحضير قنوات الجذور باستعمال محاليل غسيل مختلفة :   دراسة معملية 
Mona Said Abu Ser'a Mousa ; Supervised Alaa Eldeen Hussein Diab , Suzan Abdulwanees Amin 
 - Cairo :   Mona Said Abuser'a Mousa ,   2012 
 - 90Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Oral and dental medicine - Department of Endodontics 
<br/><br/> The aim of this study: was to evaluate and compare the surface topography, distortion and fracture of titanium nitride-coated and titanium nitride- non coated nickel titanium rotary endodontic instruments utilized in the preparation of curved root canals on using different irrigants. Results: ProTaper system instruments showed statistically significantly higher spiral distortion and wear scores than the alpha system instruments (p< 0.05). o Sodium hypochlorite and saline showed statistically significantly higher spiral distortion and wear scores than EDTA (p< 0.05). o The instruments significantly more spirally distorted 5mm from the tip than at the tip (p< 0.05). However, the two sites showed similar wear signs ( p> 0.05). 
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<br/><br/><label>Subjects--Index Terms: </label>Coated and Titanium Nitride Surface Topography     Titanium Nitride