نتایج جستجو برای: radiography panoramic

تعداد نتایج: 23591  

2015
Johann Malina-Altzinger Georg Damerau Klaus W Grätz P D Bernd Stadlinger

BACKGROUND The aim of this study was to evaluate the validity and the inter- and intra-examiner reliability of panoramic-radiograph-driven findings of different maxillary sinus anatomic variations and pathologies, which had initially been prediagnosed by cone beam computed tomography (CBCT). METHODS After pairs of two-dimensional (2D) panoramic and three-dimensional (3D) CBCT images of patien...

Journal: :Dento maxillo facial radiology 2006
A Ohman K Kivijärvi U Blombäck L Flygare

OBJECTIVES To report radiographic findings of examinations with computed tomography (CT) of impacted lower third molars with an intimate relation to the mandibular canal and to investigate how findings of a dark band across the roots of the lower third molar on panoramic views correspond to the CT findings. METHODS CT images of 90 lower third molars (64 patients, mean age 34.6 years) in which...

Journal: :Collegium antropologicum 2009
Ilkay Peker Kahraman Gungor Mustafa Semiz Ibrahim Tekdemir

The purpose of this study was to compare the efficiency of conventional and digital panoramic images for localization of mental and mandibular foramens. Six dry edentulous human mandibles were used in the study. Conventional and digital panoramic images were obtained and the vertical and horizontal measurements were performed for localization of mental and mandibular foramens on the images. The...

Journal: :Dento maxillo facial radiology 2013
L Vazquez Y Nizamaldin C Combescure R Nedir M Bischof D M Dohan Ehrenfest J-P Carrel U C Belser

OBJECTIVES Conventional panoramic radiography, a widely used radiographic examination tool in implant treatment planning, allows evaluation of the available bone height before inserting posterior mandibular implants. Image distortion and vertical magnification due to projection geometry is well described for rotational panoramic radiographs. To assess the accuracy of vertical height measurement...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2006
Sug-Joon Ahn Tae-Woo Kim Dong-Yul Lee Dong-Seok Nahm

INTRODUCTION Panoramic radiographs are routinely used in orthodontic diagnosis and treatment planning. It would be useful if these radiographs could also provide information about internal derangement (ID) of the temporomandibular joint (TMJ). METHODS The sample consisted of 168 condyles in 84 women. They underwent panoramic radiography on 1 of 3 machines and bilateral magnetic resonance imag...

Journal: :مجله تحقیق در علوم دندانپزشکی و فک و دهان 0
sh sakhdari periodontics dept,dental branch of tehran, islamic azad university, tehran, iran ah jafarinaini orthodontics dept,dental branch of tehran, islamic azad university, tehran, iran mh kharazi epidemiologist, dental research center, tehran university of medical sciences, tehran, iran n najafi , radiology dept,dental branch of tehran, islamic azad university, tehran, iran

background and aim: methods of age estimation with the aid of radiography have higher accuracy compared with other methods. some investigations have been performed in this regard, but the correlation between dental development and body mass index (bmi) has been limitedly researched. in the present study, the correlation between dental development and bmi in the children referring to the dental ...

Introduction: Most third molars eventually need to be extracted, and this tooth has the most varied and unpredictable root position of all teeth. Therefore, considering the importance of accurate diagnosis of the roots of molar teeth before surgery to reduce its surgical complications, the aim of this study was to evaluate the ability of panoramic radiography to diagnose the situation of roots ...

G. Hodolli, G. Nafezi, M. Bahtijari, N. Syla, S. Kadiri,

Background: The aim of this study was to measure and determine diagnostic reference levels (DRLs) of programs used at intraoral and dent panoramic examinations in Kosovo. Materials and Methods: To determine DRL, were performed measurements for dose area product (DAP) at intraoral and dental panoramic radiology systems. This study has covered over 47% of X-ray units, which are in use for intraor...

ژورنال: مجله دندانپزشکی 2008
ابوالحسنی, فرید, باشی‌زاده فخار, حوریه, محتوی‌پور, طاهره,

Background and Aim: Accurate bone measurements are essential to determine the optimal size and length of dental implants. The magnification factor of radiographic images may vary with the imaging technique used. The purpose of this study was to compare the accuracy of linear tomography and panoramic radiography in vertical measurements, as well as the accuracy of linear tomography in mandibular...

Journal: :journal of ai and data mining 2014
sekine asadi amiri ehsan moudi

one of the most common positioning errors in panoramic radiography is palatoglossal air space above the apices of the root of maxillary teeth. it causes a radiolucency obscuring the apices of maxillary teeth. in the case of this positioning error, the imaging should be repeated. this causes the patient be exposed to radiation again. to avoid the repetition of exposing harmful x-rays to the pati...

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