نتایج جستجو برای: shape of teeth
تعداد نتایج: 21178229 فیلتر نتایج به سال:
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
background: the purpose of this study was to investigate of radiographic pattern and relative frequency of idiopathic osteosclerosis (io) and condensing osteitis (co) in panoramic radiographs. materials and methods: totally 411 panoramic radiographies were randomly selected from patients referred to radiology department of faculty of dentistry, tabriz university of medical sciences. descriptive...
Introduction: Dentin Dysplasia is one of the rare hereditary diseases that the enamel is normal, but it also affects the dentin and the shape of the tooth pulp. Due to the low prevalence of this disease, a case of dentin dysplasia with the classical and atypical dentin dysplasia type 1 is presented. Case presentation:A 11-year-old girl with the mobility of lower central teeth that has severe ...
The aim of this study was to evaluate the frequency of agreement between the shape of the maxillary central incisor (MCI) and that of the face; verify which is the most pleasing MCI shape for the two genders; whether there is coincidence in the preference for tooth shape; and measure the most pleasant proportion of tooth and facial width for the esthetics of the smile. One hundred patients were...
Dental biometrics used in forensic science for human identification. It utilizes dental radiographs. This radiograph provides information related to teeth shape, teeth contour and relative position of neighboring teeth, also it gives shapes of dental work like crowns, filling & bridges etc. This paper includes different method used for dental biometrics and related information. Dental biometric...
The purpose of the present study was to clarify the prevalence and degree of root resorption induced by orthodontic treatment in patients with and without open bite. One hundred and eleven patients treated with multibracket appliances were retrospectively selected from the patients and divided into non-open bite (NOB) and open bite (OB) groups. The severity of root resorption and the root shape...
Background and Aim: Selecting the appropriate form of anterior teeth in patients without teeth is important factor in restoring the missing beauty of the patient. For this purpose, the study of natural teeth in terms of investigating the relationship between dimensions and forms and its prevalence in the Iranian community is essential. Materials and Methods: This analytic and descriptive stu...
Objectives: This study was performed to investigate the prevalence of idiopathic osteosclerosis on cone beam computed tomography (CBCT) images of patients. Methods: In this descriptive, cross-sectional study, 240 CBCT scans of patients (125 women, 115 men) referred to a private oral and maxillofacial radiology clinic in Tehran in 2013 were selected and evaluated. Presence of idiopathic osteosc...
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