INTRODUCTION One of the common findings encountered by the clinician at the end of orthodontic treatment is the apical root resorption. Root resorption occurs to various degrees. A severe form of root resorption is characterized by shortening of root for more than 4 mm or more than one-third of the total tooth length. A low incidence rate of resorption is observed based on radiographic findings...

introduction: the important of comparing performance of hospitals using hospital indicators, has been made the necessary of utilizing of the application model inevitable. this study aimed to compare hospital performance key indicators simultaneity. methods: in this descriptive cross sectional and retrospective study, 31 hospitals of isfahan university of medical sciences were evaluated in 2007....

objectives the purpose of this study was to determine the types of fall-related injuries and the related risk factors in the elderly population of qom province, iran. patients and methods this retrospective study was performed on 424 elderly people (65 years and over) referred to shahid beheshti hospital, qom, iran, due to falls between 2010 and 2012. the icd-10 codes of external causes of inju...

In this paper the effect of engagement length, number teeth, amount applied load, wave propagation time, cycles, and initial crack length on principal stress distribution, velocity propagation, cyclic growth rate in a spline coupling subjected to torsional impact have been investigated analytically experimentally. It was found that stresses induced due loading are higher than with high percenta...

introduction: this study was carried out to evaluate the technical quality of root canal treatment (rct) performed by undergraduate dental students at the islamic azad university in tehran, iran. materials and methods: four-hundred records of patients who had received rct at faculty of dentistry, between the years 2004-2006 were evaluated. for each treated tooth at least three periapical x-rays...

background and aims. tooth loss may lead to mastication disability, which in turn has important impact on individual’s quality of life. social and psychological factors have been shown to be associated with tooth loss. this study aimed to investigate the social determinants and prevalence of tooth loss, and presence of functional dentition among female heads of household under support of welfar...

I. Four groups of weanling rats were maintained on diets containing either 0 1 2 % or 0.24 yo of both calcium and phosphorus, in the presence and absence of added ergocalciferol. 2. Increase in mineral intake or the provision of vitamin D increased the final body-weight, with a significant interaction between the two factors. 3. Serum Ca and P concentrations were raised significantly by both th...