نتایج جستجو برای: tooth contact analysis
تعداد نتایج: 3022671 فیلتر نتایج به سال:
Introduction: Contact sports may lead to dental injures, which may often be prevented by using mouthguards. The purpose of this study was to evaluate the prevalence of traumatic dental injuries (TDI) in professional contact sport athletes and to determine the awareness regarding use of mouthguards in this group. Methods: A questionnaire containing a number of questions regarding the demographi...
Statement of Problem: Central crown fractures of deciduous and permanent teeth lead to unfavorable psychological effects on both children and their parents. Moreover, it can cause malocclusion. So,recognizing tooth fracture reasons plays an important role to prevent its side effects.Aim: The aim of this study was to investigate the reasons' of permanent central crown fractures in (7-12)years ...
Background and Aims: Caries and bone loss are the most common diseases in oral cavity. The prevalence of these diseases will be reduced by controlling their risk factors. In this study, bitewing radiographs of patients were examined to illustrate the relationship between caries and bone loss.Materials and Methods: One-hundred and fifty bitewing radiographs of 86 patients were evaluated. In thes...
Background and purpose: Antibacterial properties of restorative materials are of great advantage as they control the progression of tooth decay. The use of self-adhesive composite materials has some benefits such as easier application and reduced treatment time. Because the antibacterial properties of restorative materials can play an important role in preventing secondary decay, especially in ...
The paper presents modelling of tooth trajectory and process geometry in peripheral milling of curved surfaces. The paper differs from previous work in this area, in two respects. Firstly it deals with milling of variable curvature geometries unlike zero and constant curvature geometries dealt in the past. Secondly true tooth trajectories are considered for modelling process geometry in milling...
The purpose of this study was to evaluate cuspal flexure in posterior primary teeth following restoration with three different materials. Twelve primary second molars were obtained. A precision strain gage was attached to the buccal surface of each tooth and balanced at zero. The teeth were mounted and then loaded with a 10 kg force; the strain appearing on the strain gage indicator was recorde...
We used microneurography to characterize stimulus-encoding properties of low-threshold mechanoreceptive afferents in human orofacial tissues. Signals were recorded from single afferents in the infraorbital, lingual and inferior alveolar nerves while localized, controlled, mechanical stimuli were delivered to the facial skin, lips, oral mucosa and teeth. We likewise analyzed activity in these af...
Abstract. The face gear tooth surface is a high-order variable curvature surface, and the of complicated, so it difficult to describe characteristics by specific equation. In this paper, discrete relation used instead an analytical equation spatial meshing traditional theory neutralized analyze surface. Firstly, according structural gear, sampling method analyzed, mathematical model fitting con...
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