نتایج جستجو برای: cbct

تعداد نتایج: 4158  

2015
Aleksandar Vujanovic-Eskenazi Jesus-Manuel Valero-James María-Angeles Sánchez-Garcés Cosme Gay-Escoda

OBJECTIVES To compare the prevalence and the length of mental loop, measured with panoramic radiography (PR) and cone beam computerized tomography (CBCT). MATERIAL AND METHODS PG and CBCT images where analyzed by a single calibrated examiner to determine the presence and the position of the mental foramen (MF), its distance to the lower mandible border, the anterior length of the mental loop ...

Journal: :International endodontic journal 2015
S Patel C Durack F Abella H Shemesh M Roig K Lemberg

Cone beam computed tomography (CBCT) produces undistorted three-dimensional information of the maxillofacial skeleton, including the teeth and their surrounding tissues with a lower effective radiation dose than computed tomography. The aim of this paper is to: (i) review the current literature on the applications and limitations of CBCT; (ii) make recommendations for the use of CBCT in Endodon...

Journal: :Dental clinics of North America 2014
Kenneth Abramovitch Dwight D Rice

At the end of the millennium, cone-beam computed tomography (CBCT) heralded a new dental technology for the next century. Owing to the dramatic and positive impact of CBCT on implant dentistry and orthognathic/orthodontic patient care, additional applications for this technology soon evolved. New software programs were developed to improve the applicability of, and access to, CBCT for dental pa...

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 2010
Yehya A Mostafa Amr Ragab El-Beialy Gihan A Omar Mona Salah Fayed

Cone-beam computed tomography (CBCT) has become popular, and its many inherent advantages are indisputable. Nevertheless, CBCT is prescribed cautiously because the radiation dosage is higher than that of conventional radiography. When and to what extent should CBCT be prescribed for orthodontic patients? The purpose of this article is to present 4 curious cases in which a considerable discrepan...

2013
Jung-Ting Ho Jay Wu Heng-Li Huang Michael YC Chen Lih-Jyh Fuh Jui-Ting Hsu

OBJECTIVE This study compared the adequacy of dental cone beam computed tomography (CBCT) and micro computed tomography (micro-CT) in evaluating the structural parameters of trabecular bones. METHODS The cellular synthetic bones in 4 density groups (Groups 1-4: 0.12, 0.16, 0.20, and 0.32 g/cm3) were used in this study. Each group comprised 8 experimental specimens that were approximately 1 cm...

Journal: :Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery 2009
Emma Barker Keith Trimble Harley Chan James Ramsden Sajendra Nithiananthan Adrian James Gideon Bachar Mike Daly Jonathan Irish Jeff Siewerdsen

OBJECTIVES To describe a cadaveric temporal bone model of labyrinthitis ossificans and investigate the utility of intraoperative cone-beam computed tomography (CBCT) in the facilitating cochlear implantation. DESIGN Cadaveric temporal bone study. METHODS Five cadaveric heads had cement introduced into the 10 cochleas. CBCT and a conventional CT scan were compared to assess the extent of coc...

2017
Andrea Fagundes Campello Lucio Souza Gonçalves Fábio Ribeiro Guedes Fábio Vidal Marques

PURPOSE The aim of this study was to compare the diagnostic accuracy of previously trained endodontists in the detection of artificially created periapical lesions using cone-beam computed tomography (CBCT) and digital periapical radiography (DPR). MATERIALS AND METHODS An ex vivo model using dry skulls was used, in which simulated apical lesions were created and then progressively enlarged u...

2016
Noor Mail Muhammad Yusuf Nazeeh Alothmany A. Abdulrahman Kinsara Fahad Abdulkhaliq Suliman M. Ghamdi Abdelhamid Saoudi

Cone-beam computed tomography CBCT systems are used in radiation therapy for patient alignment and positioning. The CBCT imaging procedure for patient setup adds substantial radiation dose to patient's normal tissue. This study pre-sents a complete procedure for the CBCT dosimetry using the InLight optically-stimulated-luminescence (OSL) nanoDots. We report five dose parameters: the mean slice ...

Journal: :Korean journal of orthodontics 2015
Pil-Kyo Jung Gung-Chol Lee Cheol-Hyun Moon

OBJECTIVE This study investigated whether it is possible to use a two-dimensional (2D) standard in three-dimensional (3D) analysis, by comparing the angles and lengths measured from a midsagittal projection in 3D cone-beam computed tomography (CBCT) with those measured by 2D lateral cephalometric radiography (LCR). METHODS Fifty patients who underwent both LCR and CBCT were selected as subjec...

2017
Vanessa Camillo Almeida Lucas Rodrigues Pinheiro Fernanda Cristina Sales Salineiro Fausto Medeiros Mendes João Batista César Neto Marcelo Gusmão Paraíso Cavalcanti Cláudio Mendes Pannuti

BACKGROUND Cone beam computed tomography (CBCT) has been largely used in dentistry. Nevertheless, there is lack of evidence regarding CBCT accuracy in the diagnosis of early periodontal lesions as well as the correlation between accuracy and lesion size. The aim of this study was to evaluate accuracy of CBCT and conventional intraoral radiographs in detecting different-sized interproximal bone ...

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