TY - BOOK AU - Ameen Abdullah Yehia AU - Gihan Abuelneil , AU - Hala Zakaria , AU - Nevine Waly , TI - A clinical and radiographic study of the prevalence of tramatic injuries to the permanent incisors among group of Egyptian and Yemeni school children / PY - 2009/// CY - Cairo : PB - Ameen Abdullah Yehia , KW - Clinical KW - Prevalence KW - Radiographic N1 - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Pedodontics; Issued also as CD N2 - This study was carried out to compare the prevalence and determine the causes of traumatic injuries to permanent incisors teeth in 7-14 year old children among group of Egyptian and Yemeni school children. This study was performed on 2000 school children divided into two equal groups. 1000 Egyptian (50%) children and 1000 Yemeni children UR - http://172.23.153.220/th.pdf ER -