Objective: In this study, it was aimed to determine the age of onset crown calcification third molars in children aged 5-15 years Turkey, and evaluate development status by age.Material Methods: Panoramic radiographs first 1024 patients between ages 5 15 were evaluated. The (calcification) classified according Demirjian method.Results: When stages for maxillary mandibular compared, no statistic...

background: menstruation signs are among the most common disorders in adolescents and are influenced by various environmental and psychosocial factors. this study aimed to define the association between menstruation signs and anxiety, depression, and stress in school girls in mashhad in 2011-2012. materials and methods: this was a cross-sectional study on 407 high school girls in mashhad who we...

background & aim : adolescence is a sensitive period and psychological health during this period is of significant importance. several studies suggest that self-esteem is a better predictor of success in studying than intelligence scores. having assertiveness is considered important in having a high self-esteem. this study has been carried out in order to determine the influence of assertivenes...