نتایج جستجو برای: cephalometric trial

تعداد نتایج: 320998  

Journal: :journal of dentistry, tehran university of medical sciences 0
mahtab nouri associate professor of dentofacial deformities research center, research institute of dental sciences, and orthodontic department of school of dentistry, shahid beheshti university of medical sciences, tehran, iran. shadi hamidiaval resident of maxillofacial radiology, radiology department, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. alireza akbarzadeh baghban ph.d in biostatistics, associate professor, department of basic sciences, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran. mohammad basafa professor, department of orthodontics, mashhad dental school, mashhad university of medical sciences, mashhad, iran. mohammad fahim software engineer.

cephalometric norms of mcnamara analysis have been studied in various populations due to their optimal efficiency. dolphin cephalometric software greatly enhances the conduction of this analysis for orthodontic measurements. however, dolphin is very expensive and cannot be afforded by many clinicians in developing countries. a suitable alternative software program in farsi/english will greatly ...

2015
Claudia Lindner Tim F. Cootes

Cephalometric analysis is commonly used as a standard tool for orthodontic diagnosis and treatment planning. The identification of cephalometric landmarks on images of the skull allows the quantification and classification of anatomical abnormalities. In clinical practice, the landmarks are placed manually which is time-consuming and subjective. This work investigates the application of Random ...

2012
Maryam Zangouei-Booshehri Hossein-Agha Aghili Mojtaba Abasi Fatemeh Ezoddini-Ardakani

BACKGROUND The gonial angle is one of the most important measurements required for orthodontic treatment and orthognathic surgery. It is difficult to determine the accurate measurement of each gonial angle on cephalometric radiographs because of superimposition of the left and right angles. OBJECTIVES The aim of the present study was to determine the right and left gonial angles on panoramic ...

Journal: :International journal of oral and maxillofacial surgery 2010
O J C van Vlijmen T Maal S J Bergé E M Bronkhorst C Katsaros A M Kuijpers-Jagtman

The purpose of this study was to evaluate whether measurements on conventional cephalometric radiographs are comparable with 3D measurements on 3D models of human skulls, derived from cone beam CT (CBCT) data. A CBCT scan and a conventional cephalometric radiograph were made of 40 dry skulls. Standard cephalometric software was used to identify landmarks on both the 2D images and the 3D models....

2009
Rosalia Leonardi Daniela Giordano Francesco Maiorana

Several efforts have been made to completely automate cephalometric analysis by automatic landmark search. However, accuracy obtained was worse than manual identification in every study. The analogue-to-digital conversion of X-ray has been claimed to be the main problem. Therefore the aim of this investigation was to evaluate the accuracy of the Cellular Neural Networks approach for automatic l...

Journal: :Brazilian oral research 2006
Fernando Antonio Gonçalves Lígia Schiavon João Sarmento Pereira Neto Darcy Flávio Nouer

The orthodontic documentation carried out in radiological clinics is essential for diagnosis, planning and control of the orthodontic treatment. Amongst the diagnosis elements used are the cephalometric measurements, and errors can be incorporated as they are obtained. The objective of this work was to evaluate the values of some cephalometric measurements obtained in three radiological clinics...

2016
Stefano Mummolo Alessandro Nota Enrico Marchetti Giuseppe Padricelli Giuseppe Marzo

Aim. This study aimed to evaluate the reliability of 3D-TMT, previously used only for dynamic testing, in a static cephalometric evaluation. Material and Method. A group of 40 patients (20 males and 20 females; mean age 14.2 ± 1.2 years; 12-18 years old) was included in the study. The measurements obtained by the 3D-TMT cephalometric analysis with a conventional frontal cephalometric analysis w...

Journal: :International journal of oral and maxillofacial surgery 2009
O J C van Vlijmen S J Bergé E M Bronkhorst G R J Swennen C Katsaros A M Kuijpers-Jagtman

This study evaluated whether measurements on conventional frontal radiographs are comparable with measurements on cone beam computed tomography (CBCT)-constructed frontal cephalometric radiographs taken from dry human skulls. CBCT scans and conventional frontal cephalometric radiographs were made of 40 dry skulls. With I-Cat Vision((R)) software, a cephalometric radiograph was constructed from ...

Journal: :Journal of dental education 2008
Randall F Stewart Heather Edgar Charles Tatlock Philip J Kroth

The science of cephalometry has been invaluable for guiding orthodontic diagnosis, treatment planning, and outcomes tracking. Though software packages easily calculate most cephalometric measurements, the ability to exchange cephalometric data between software packages is poorly developed. Hindering this effort is the lack of an agreed-upon standard for electronic exchange of cephalometric meas...

2011
SOHRAB SHAHEED AYESHA IFTIKHAR

Digital Cephalometry needs to be as accurate as conventional cephalometry in order to be taken as a standard of care in contemporary orthodontics. Objective of this study was to compare the accuracy of linear cephalometric measurements on scanned cephalograms with manual tracing as the gold standard. Cephalometric analysis of specified linear measurements was performed on cephalometric radiogra...

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