TY - BOOK AU - Noha Tawfik Mohammed AU - Khaled Mohamed Ezzat , AU - Laila Mohamed Kenawi , TI - Assessment of endovac system and ultrasonic irrigation on apical extrusion of debris and removal of smear layer : : An in Vitro study / PY - 2013/// CY - Cairo : PB - Noha Tawfik Mohammed , KW - Endovac KW - Smear layer removal KW - Ultrasonic irrigation N1 - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics; Issued also as CD N2 - This study was designed to evaluate the effectiveness of the EndoVac system versus Ultrasonic irrigation in terms of weight of apically extruded debris and cleanliness of smear layer from root canal in vitro after endodontic instrumentation. Sixty extracted human mandibular incisors were selected. The crowns of all teeth were decoronated to allow access to root canal and establish an average root length of 17mm. The root samples were divided randomly into two main groups with thirty teeth per group. Group I experimental (Revo-S) is subdivided into three subgroups of ten each. Subgroup I.a (Macro-cannula) Subgroup I.b(Micro-cannula) Subgroup I.c(Ultrasonic). Group II control (Step-back) is subdivided into three subgroups II.a (Macro-cannula) Subgroup II.b (Micro-cannula) Subgroup II.c (Ultrasonic). ER -