نتایج جستجو برای: linear tomography

تعداد نتایج: 659871  

Journal: :avicenna journal of dental research 0
f. poursafar assistant professor, department of oral and maxillofacial radiology, faculty of dentistry , hamadan university ofسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) f. salemi assistant professor, department of oral and maxillofacial radiology, faculty of dentistry , hamadan university ofسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) m. kadkhodazadeh assistant professor, department of periodentology , faculty of dentistry , shaheid beheshti university of medical sciences, iran m. azizi post graduate student, department of oral and maxillofacial radiology, faculty of dentistry , hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

statement of the problem in order to replace lost tooth of patients, we use dental implants which are common. therefore, accurate measuring of bone height and width before placing implants is necessary. the aim of this study is evaluating the accuracy of linear and spiral tomography in careful determination of implant site sizes in comparison with gold standard (cbct). material and methods this...

ژورنال: مجله دندانپزشکی 2010
تاری, مجید, میرزایی, مریم, پنج نوش, مهرداد,

Background and Aims: Radiographic examination prior to implant placement is often complemented with tomography for location of vital anatomic structures and evaluation of bone volume. The aim of this study was to evaluate the accuracy of Photostimulable Phosphor Plate system with that of conventional film-screen in mandibular pre-implant linear tomography Materials and Methods: In this test eva...

ژورنال: مجله دندانپزشکی 2009
حسینی پویا, مهدی, دیوبند, محمدرضا, شکری, عباس, پنج‌نوش, مهرداد,

Background and Aim: The objective of this study was to measure and compare the tissue absorbed dose in thyroid gland, salivary glands, eye and skin in maxillofacial imaging with panoramic, conventional linear tomography, cone beam computed tomography (CBCT) and computed tomography (CT).Materials and Methods: Thermoluminescent dosimeters (TLD) were implanted in 14 sites of RANDO phantom to measu...

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...

Ali Bijani, Ehsan Moudi, Hoora Hadian, Mirmahmood Safinia, Nika Bahemmat, Sina Haghanifar,

Introduction: The measurement precision of jaw is important for surgery or installing implants. Preimplant radiographs are important part of clinical evaluations before implant surgery. For choosing location, we should consider the important anatomical structures like mental foramen, inferior alveolar canal, nasal cavity and maxillary sinus.It is important to know the measurement accuracy of ra...

Journal: :Geophysical Journal International 1988

S,H Hoseini Z Mohamadzadeh

Background & Aims: The accuracy of dental implants has increased in recent years. An accurate radiography from the region is needed for precise treatment planning in implants and for determining prognosis of treatment. Because this technique can demonstrate the buccolingual aspect, and due to its lower radiation dose, lower cost, and availability, in comparison with computed tomography, lineart...

ژورنال: مجله دندانپزشکی 2007
زرگرپور, رزا , طلائی‌پور, احمدرضا , پنج نوش, مهرداد ,

Background and Aim: Accurate measurement of bone height and width is essential prior to dental implant placement. The method of surgery as well as, the type and size of implants are determined according to dimensions of the residual bone. The purpose of this study was to evaluate the accuracy of linear tomography in localization of the floor of nasal fossa and maxillary sinus, and to determine ...

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