نتایج جستجو برای: permanent displacement
تعداد نتایج: 116516 فیلتر نتایج به سال:
Abstract BACKGROUNackgroundD & AIM: Intrusive luxation is apical displacement of tooth into the alveolar bone due to bicycle accidents, sports accidents, falls, and fights. Intruded tooth is driven into the socket, compressing the periodontal ligament. Intrusion is considered as one of the most severe luxation injuries to affect permanent dentition. Intrusion injuries are often associated w...
OBJECTIVES We evaluated and recorded post-traumatic and postoperative neurosensory deficits of the inferior alveolar nerve (IAN) in mandibular fracture in order to identify associated risk factors. MATERIALS AND METHODS This was a prospective cohort study composed of 60 patients treated for mandibular fracture. The primary study variable was the change between the post-traumatic IAN neurosens...
he aim of this study was to evaluate the apical displacement produced by different rotary nickel-titanium instruments, testing the hypothesis that rotary systems with nickel-titanium instruments produce lower mean values of apical displacement than stainless steel hand instruments. A total of 100 maxillary permanent first molars were selected for the study. The mesiobuccal roots were sectioned ...
This paper presents a novel procedure for the emergency sensorless operation of six-phase electric drive. More degrees freedom provided by multiphase technology have been utilized to determine rotor flux position. The proposed technique is based on direct measurement back EMF generated disconnected three-phase winding permanent-magnet synchronous machine (PMSM). method suitable an drive in case...
This report describes a case of 20-month-old baby with severe intrusive luxation. Axial displacement the teeth in labial direction was found through lateral radiograph nose. Minimal intervention treatment proposed by periodic follow-up. After 30 days, started to re-erupt spontaneously without need for surgical or orthodontic assistance. At eight months, it had erupted completely, showing slight...
In this paper, the authors present a novel analytical model for rotordynamic analysis of high-speed permanent magnet synchronous machine (HS-PMSM) with retention sleeve. The proposed has fast response, accurate results, and sample formulation, is validated finite-element method (FEM). obtained results show proper accuracy solution approach. significant are: formulation HS-PMSMs can accurately c...
The three-dimensional model of rare earth permanent magnet synchronous motor is built based on SolidWorks software, the assembly and production explosion diagram are completed. Finally, shaft imported into Workbench interface ANSYS finite element analysis software for harmonic response modal analysis. results show that resonates under action 659.38hz exciting force, displacement value deformati...
Results The presence of posterior crossbite was significantly greater in growing subjects with oral breathing thus confirming the influence of these factors on skeletal development with constriction of the whole palate. Unilateral posterior crossbite is often associated with mandibular lateral displacement that is clinically characterized by deviation of the chin, facial asymmetry, dental midli...
The purpose of this study was to evaluate the effect interceptive primary canine extraction in palatally and buccally displaced maxillary permanent canines, analyze clinical radiographic factors affecting treatment outcome. 97 canines from 86 patients whose were mesio-occlusal directions overlapped with roots adjacent teeth analyzed. In 64 (66.0%) crown completely deviated lateral incisor root ...
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