نتایج جستجو برای: cbct scan

تعداد نتایج: 84508  

Journal: :Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] 2017
Dean Vafiadis Gary Goldstein David Garber Anthony Lambrakos Bj Kowalski

OBJECTIVE Preserving soft and hard tissues after extraction and implant placement is crucial for anterior esthetics. This technique will show how the information gathered from a cone-beam computed tomography (CBCT) scan of the maxillary left central incisor and an intra-oral digital impression can be merged to fabricate a CAD/CAM crown-root matrix to be used as an immediate provisional restorat...

2012
Gagan Saini Anchal Aggarwal Roopam Srivastava Pramod K. Sharma Madhur Garg Sapna Nangia Manish Chomal

INTRODUCTION While planning radiation therapy (RT) for a carcinoma of the urinary bladder (CaUB), the intra-fractional variation of the urinary bladder (UB) volume due to filling-up needs to be accounted for. This internal target volume (ITV) is obtained by adding internal margins (IM) to the contoured bladder. This study was planned to propose a method of acquiring individualized ITVs for each...

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 ...

2015
Aurora Fassi Joël Schaerer Marco Riboldi David Sarrut Guido Baroni

The integration of in-room X-ray imaging and optical surface tracking has gained increasing importance in the field of image guided radiotherapy (IGRT). An essential step for this integration consists of temporally synchronizing the acquisition of X-ray projections and surface data. We present an image-based method for the synchronization of cone-beam computed tomography (CBCT) and optical surf...

Journal: :Biomedical journal 2013
Preetinder Singh

With reference to an excellent article published in your esteemed journal recently regarding the use of cone beam computed tomography (CBCT) for the detection of external root resorption, I would like to add some vital information on the use of CBCT in craniofacial field in the present era. CBCT allows the creation in “real time” of im‐ ages not only in the axial plane but also 2‐dimensional im...

Journal: :Brazilian oral research 2012
Otavio Shoiti Umetsubo Bruno Felipe Gaia Felipe Ferreira Costa Marcelo Gusmão Paraiso Cavalcanti

The aim of the present study was to test the reproducibility, sensitivity, and specificity of cone-beam computed tomography (CBCT) in detecting incipient furcation involvement. Fifteen macerated pig mandibles, with intact second molar teeth and preserved adjacent cortical areas, were used. Simulated lesions were created in the furcation region of these teeth by applying 70% perchloric acid in u...

2011
MF Chan J Yang Y Song C Burman P Chan S Li

PURPOSE The imaging characteristics of two popular kV cone-beam CT (CBCT) and two MVCT systems utilised in image-guided radiation therapy (IGRT) were evaluated. MATERIALS AND METHODS The study was performed on Varian Clinac iX, Elekta Synergy S, Siemens Oncor, and Tomotherapy. A CT phantom (Catphan-504, Phantom Laboratory, Salem, NY) was scanned for measurements of image quality including ima...

2017
Evaldo Rodrigues Antônio Henrique Braitt Bruno Ferraz Galvão Emmanuel João Nogueira Leal da Silva

Root canal anatomy is complex, and the recognition of anatomic variations could be a challenge for clinicians. This case report describes the importance of cone beam computed tomographyic (CBCT) imaging during endodontic treatment. A 23 year old woman was referred by her general dental practitioner with the chief complaint of spontaneous pain in her right posterior maxilla. From the clinical an...

2017
Ali Z. Syed Anna Hawkins Leela Subashini Alluri Buthainah Jadallah Kiran Shahid Michael Landers Hussein M. Assaf

Soft tissue calcification is a pathological condition in which calcium and phosphate salts are deposited in the soft tissue organic matrix. This study presents an unusual calcification noted in the cartilaginous portion of the Eustachian tube. A 67-year-old woman presented for dental treatment, specifically for implant placement, and cone-beam computed tomography (CBCT) was performed. The CBCT ...

2014
Melda Misirlioglu Mehmet Zahit Adisen Selmi Yilmaz

OBJECTIVE To present two cases of osteochondritis dissecans (OCD) in temporomandibular joints (TMJs) evaluated by panoramic radiography and cone-beam computed tomography (CBCT). CLINICAL PRESENTATION AND INTERVENTION Two patients were referred to the Oral and Maxillofacial Radiology Clinic with pain, preauricular tenderness on the TMJ region and limitation of mandibular movements. An earlier ...

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