background :reduction of neonatal mortality rate can improve health and newborn status of the society. this study was done to evaluate the prevalence and patternof causes for neonatal mortality in gorgan, north of iran. methods: this descriptive, cross-sectional study was carried out on all birth in the maternity dezyani hospital in gorgan, north of iran during 1 september 2008 -31 march 2011 ....

tooth fusion is a developmental anomaly characterized by the :union: between the dentin and/or enamel of at least two separately developing teeth. the fusion of posterior teeth is an uncommon occurrence. in this article, we report a rare case of unilateral fusion of a mandibular second molar with a paramolar. carious exposure mandated endodontic treatment. the unusual morphology and complex roo...

novamin, a synthetic mineral composed of calcium, sodium, phosphorous and silica releases deposits of crystalline hydroxyl-carbonate apatite (hca) structurally similar to tooth mineral composition. the aim of this investigation was to compare the potential remineralization effect of topical novamin and sodium fluoride gel on caries like lesions in permanent teeth.a total of 60 sound human fresh...

statement of problem: nowadays, evaluation of the development of occlusion in deciduous teeth for creating corrective occlusion in permanent teeth is one of the most important objectives of pediatric dentistry. in other countries, a vast number of researches have been accomplished on the details of occlusion in deciduous teeth. but, unfortunately, there is still no accurate information about th...

to evaluate the interfacial morphology and the bond strength produced by the three-step, two-step and single-step bonding systems in primary teeth.occlusal surfaces of 72 extracted human deciduous teeth were ground to expose the dentin. the teeth were divided into four groups: (a) scotchbond multipurpose (3m, espe), (b) adh se (vivadent), (d) optibond all-in-one (kerr) and (e)futurabond nr (voc...

background and aims. various methods are used to measure the size and form of the teeth, including the golden proportion, and the width-to-length ratio of central teeth, referred to as the golden standard. the aim of this study was to evaluate the occurrence of golden standard values and golden proportion in the anterior teeth. materials and methods. photographs of 100 dentistry students (50 ma...