Results 71 to 80 of about 69,836 (228)

A new approach for locating the minor apical foramen using an artificial neural network [PDF]

open access: yes, 2012
Aim  To develop a new approach for locating the minor apical foramen (AF) using feature‐extracting procedures from radiographs and then processing data using an artificial neural network (ANN) as a decision‐making system.
Addison   +50 more
core   +1 more source

Effect of dose reduction in digital dental panoramic radiography on image quality

open access: yesDentomaxillofacial Radiology, 2002
OBJECTIVES To investigate the effect of dose reduction in digital panoramic radiography on subjective image quality and diagnostic performance. METHODS Two digital panoramic radiographs were obtained with the Orthophos DS(Sirona, Bensheim, Germany) of patients (n=100) receiving dental care. The first image was taken at the standard exposure setting.
B Dannewitz   +3 more
openaire   +3 more sources

The Effects on Absorbed Dose Distribution in Intraoral X-ray Imaging When Using Tube Voltages of 60 and 70 kV for Bitewing Imaging

open access: yeseJournal of Oral Maxillofacial Research, 2013
Objectives: Efforts are made in radiographic examinations to obtain the best image quality with the lowest possible absorbed dose to the patient. In dental radiography, the absorbed dose to patients is very low, but exposures are relatively frequent.
Kristina Hellén-Halme, Mats Nilsson
doaj   +1 more source

Changes in radiological protection and quality control in Spanish dental installations : 1996-2003 [PDF]

open access: yes, 2009
Introduction: The European Union has established specific directives concerning radiological protection which are obligatory for member States. In addition, all Spanish dental clinics with radiological equipment are required to have an annual quality ...
Alcaraz Baños, Miguel   +4 more
core   +1 more source

Accuracy of Digital Subtraction Radiography in detection of artificial external root resorption (in vitro)

open access: yesمجله دانشکده دندانپزشکی اصفهان, 2008
Introduction: External root resorption refers to the loss of cementum and/or dentin from the rootof the teeth. 40% mineral loss occur in conventional radiographies but digital subtractionradiography is capable of localizing a lesion with only 1-5 ...
R Ghafari, M Keshavarzi
doaj  

Digital image ratio: a new radiographic method for quantifying changes in alveolar bone.Part 1: theory and methodology [PDF]

open access: yes, 1996
International audienceA new method, digital image ratio (DIR), has been developed for directly measuring changes in alveolar bone. The image on the computer monitor represents the relative mass change between two radiographs. Fourier filtering is used to
Epelboin, Yves   +4 more
core   +3 more sources

Evaluation of the effects of postprocessing settings in digital bitewing radiographs on proximal caries detection

open access: yesClinical and Experimental Dental Research
Objective Radiographs are an integral part of detecting proximal caries. The aim of this study was to evaluate the effect of contrast, brightness, noise, sharpness, and γ adjustment of digital intraoral radiographs on the diagnosis of proximal caries ...
Mehrdad Abdinian   +5 more
doaj   +1 more source

Comparative Analysis of Data Efficiency Between Conventional Periapical Radiography and Digital Subtraction Radiography in Chronic Periodontitis Patients

open access: yesEuropean Annals of Dental Sciences
Purpose: Advancements in technology have driven a shift towards digital techniques alongside conventional screening methods indental radiology and across medical disciplines.
Arzu Alan, Tolga Tözüm, Hilmi Kansu
doaj   +1 more source

Near-infrared imaging of demineralization on the occlusal surfaces of teeth without the interference of stains. [PDF]

open access: yes, 2019
Most new caries lesions are found in the pits and fissures of the occlusal surface. Radiographs have extremely low sensitivity for early occlusal decay, and by the time the lesion is severe enough to appear on a radiograph, it typically has penetrated ...
Almaz, Elias   +4 more
core   +1 more source

A Technique for Standardized Evaluation of Soft and Hard Peri-Implant Tissues in Partially Edentulous Patients [PDF]

open access: yes, 2004
Background: There is a growing need to evaluate the esthetics of implant-supported crowns and bridges. An important tool for such an evaluation is standardized assessment of the soft and hard peri-implant tissue levels.
Meijer, Henny J.A.   +3 more
core   +2 more sources

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