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Odontomas are malformations of the dental tissues and may interfere with the eruption of the associated tooth. Complex composite odontoma (CO) was described as a distinct entity for the first time by Broca in 1866. This lesion takes place due to the developmental disturbances where the dental components are laid down in a disorganized manner, due to failure(More)
In the present study, the Luria-Nebraska and the Halstead-Reitan Neuropsychological Test batteries were administered to 112 male and female Arabic and English speaking Egyptians enrolled at the American University in Cairo. The aims of the study were to establish normative data, test the effects of language and order of administration upon performance, and(More)
It remains difficult to distinguish adenoid cystic carcinoma (ACC) from polymorphous low-grade adenocarcinoma (PLGA). Although these neoplasms exhibit nearly similar histologic patterns, their biologic behavior is significantly different. This study was carried out in an attempt to overcome the histological overlap between these tumors using(More)
Different amines were found to attack the hitherto unknown 6,8-dibromo-2-(2'-thienyl)-3,1-benzoxazin-4(H)-one (2) entirely at position-4, producing the corresponding benzamide derivatives 3a-i. Compound 2 reacted with hydrazoic acid affording the tetrazole 5, beside the benzimidazole derivative 6. Similarly carbon nucleophiles, such as ethyl acetoacetate(More)
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