The purpose of this study was to clarify the prevalence and degree of root resorption induced by orthodontic treatment in association with treatment factors. The files of 243 patients (72 males and 171 females) aged 9-51 years were randomly selected from subjects treated with multi-bracket appliances. The severity of root resorption was classified into five categories on radiographs taken befor...

We study the effect of homogenization on flame propagation in periodic excitable media, when the width of the flame is much smaller than the characteristic size of the heterogeneities.

INTRODUCTION Skeletal, dental and profile discrepancies can be amended by using functional orthodontic appliances. OBJECTIVE This study is a report of the treatment of a patient, 11 years and 4 months old, with Class II, division 1, malocclusion, convex profile, protrusion of upper incisors, pronounced overjet and overbite, and mild crowding. METHODS The patient was treated with a Jasper Ju...

The present study aimed to determine the intensity of pain perception in patients undergoing fixed orthodontic treatment. We analyzed severity concerning four routine procedures: placement separating elastics, ring cementations, arch activations, and elastic tractions. Our consisted a sample 100 between 12 35 years old during initial months treatment with appliances. completed questionnaire mea...

In orthodontic therapy elastics and elastomeric chains are commonly used as an active component. These synthetic elastic materials not supposed to be ideal, they sensitive prolonged exposure saliva, water, enzymes, temperature variations external factors. The main disadvantage of auxiliaries is their inability sustain the delivered force for extended period time. objective this review determine...

in all biological systems growth is defined as increase of chemical compounds. bacteria can achieve to balanced growth if they are growing in a medium, which are completely adapted to it. clostridium chauvoei, (clostridium feseri) is an anaerobic, spore forming, motile, and polymorph bacteria, which its size varies from 0.5-1 to 3-8 micron and could be observed as individual bacterium, diplo, a...