The aim of this retrospective study was to evaluate the treatment outcome of lower incisor extraction and to compare it with premolar extraction and non-extraction treatment. The sample consisted of 60 subjects with Class I malocclusion and moderate crowding. The sample was separated into three groups: extraction of a lower incisor group, extraction of a four first premolar group and a non-extr...

OBJECTIVE Mandibular incisor extraction in carefully selected cases as an alternative option to four bicuspid extraction or non extraction treatment has been advocated. The purpose of this study was to determine the degree of improvement in occlusion in patients with Bolton discrepancy treated by one lower incisor extraction using Peer Assessment Rating Index (PAR indexes). MATERIALS AND METH...

diabetes mellitus is a common metabolic disease. its association with low level of testosterone is controversial. this study aimed to investigate the association between serum total testosterone, free testosterone index (fti), and sex hormone-binding globulin (shbg) in iranian men with type 2 diabetic.a case-control study was conducted on 38 non-diabetic and 36 diabetic men aged 40-60 years old...

environmental pollution consists of different types of pollutants in air, soil, and water. due to the fact that plants can respond to environmental pollution, they can be used as bio-indicators for environmental monitoring. air pollution in areas with oil and gas refineries nearby is an important problem. this study aims to survey the effects of gas refinery air pollutants on conocarpus erectus...

using productivity index for investigating a firms’ performance makes it possible to evaluate efficiency of the production system and cost at the same time. in this study the total factor productivity (tfp) of several sugar cane varieties in imam khomeini cultivation and processing center in khuzestan province is compared. two hundred and forty eight farms are categorized on the basis of variet...

The deoxyribonucleic acid (DNA)-agar method has been employed to demonstrate homologies among the DNA's of several members of the Enterobacteriaceae (B. J. McCarthy and E. T. Bolton, Proc. Natl. Acad. Sci. U.S. 50:156,1963). This work used the extent of reaction (binding) of radiolabeled DNA fragments to a series of DNA-agars as the index of polynucleotide homology. Competition experiments, in ...