نتایج جستجو برای: rapid expansion
تعداد نتایج: 436350 فیلتر نتایج به سال:
The surgeon and orthodontist face daily difficulties with correcting a patient's occlusion. Compressed maxilla is big obstacle to conventional orthodontic treatment or orthognathic surgery. Surgically Assisted Rapid Palate Expansion way optimize the treatment, based on osteogenic distraction tissue distraction, reaching more quickly necessary dimensions of palate. purpose this article make case...
BACKGROUND Scientific evidence showed that rapid maxillary expansion (RME) affects naso-maxillary complex, increasing nasal width and volume. This study aimed to evaluate nasal changes induced by rapid maxillary expansion with different anchorage and appliance design by using low dose and cone beam computed tomography. METHODS A total of 44 patients (20 males, mean age 8y 8 m ± 1y 2 m; 24 fem...
o bjectives: the aim of this study was to investigate the displacement and stress distri- bution during surgically assisted rapid maxillary expansion under different surgical conditions with tooth- and bone-borne devices. materials and methods: three-dimensional (3d) finite element model of a maxilla was constructed and an expansion force of 100 n was applied to the left and right molars and pr...
the objectives in the cold rolling process include improved sheet surface quality, enhanced steel mechanical strength, and better solidification operations. given the increasing demand for higher steel surface quality, more rapid production, and thinner steel plates, more attention has been directed toward the parameter of temperature in cold rolling as a means of achieving the above objectives...
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