Results 161 to 170 of about 3,801 (189)

Automatic analysis of lateral cephalograms based on high-resolution net

American Journal of Orthodontics and Dentofacial Orthopedics, 2023
Cephalometric analysis is essential in orthodontic treatment, and it is progressing toward automatic cephalometric analysis. This study aimed to establish a cephalometric landmark detection model on the basis of a high-resolution net and improve the accuracy with high resolution.A total of 2000 lateral cephalograms were collected to construct a dataset,
Chang, Qiao, Wang, Zihao, Wang, Fan, Dou, Jiaheng, Zhang, Yong, Bai, Yuxing   +5 more
openaire   +3 more sources

A comparison of scanned lateral cephalograms with corresponding original radiographs

American Journal of Orthodontics and Dentofacial Orthopedics, 2006
Digital cephalometric radiography is gaining popularity in orthodontic practices. However, few studies have compared measurements and superimpositions on analog radiographs with those made on scanned digital images. The objectives of this study were to evaluate distortion associated with scanning lateral cephalograms and printing to hard copy, and to ...
Lance Q, Bruntz, J Martin, Palomo, Sally, Baden, Mark G, Hans   +3 more
openaire   +2 more sources

Reliability of landmark recording on film and digital lateral cephalograms

The European Journal of Orthodontics, 1993
The aims of this study were: (a) to evaluate reliability of landmark location in digital processed images of film cephalograms of varying quality with that obtained in the films, and (b) to evaluate the pattern of error in landmark location with the two techniques.
V, Macrì, A, Wenzel
openaire   +2 more sources

Quality Assessment of Lateral Cephalograms Amongst Radiologists and Orthodontists

British Journal of Orthodontics, 1994
This study investigated technical errors in the production of lateral cephalograms necessitating a retake and the extent to which the retake, as ordered by the radiologist, actually produced a gain in quality as assessed by the orthodontist. All the rejected lateral cephalograms taken at the Department of Oral Radiology over a period of 1 year were ...
T W, Ortendahl, H, Borrman, H G, Gröndahl   +2 more
openaire   +2 more sources

Lateral Cephalograms: Why Do We Take Them?

Orthodontic Update, 2022
Orthodontic indications for lateral cephalograms are diagnosis, prescription, prediction and research. Benefits of taking these radiographs must be weighed against the risks of radiation exposure. Various cephalometric analyses have been described, and these are commonly used for diagnosis and treatment planning, but unavoidable errors of both ...
Jennifer Haworth, Miesha Virdi, Anthony J Ireland   +2 more
openaire   +1 more source

A novel contour-based registration of lateral cephalogram and profile photograph

Computerized Medical Imaging and Graphics, 2018
A contour-based automatic registration method of lateral cephalograms and profile photographs is proposed to facilitate the accurate measurement of anteroposterior (AP) position of maxillary central incisors relative to the forehead. There are mainly three steps in the proposed method.
Shumeng Wang, Huiqi Li, Bingshuang Zou, Wanjun Zhang   +3 more
openaire   +2 more sources

Role of lateral cephalograms in assessing severity and difficulty of orthodontic cases

American Journal of Orthodontics and Dentofacial Orthopedics, 2001
To assess the role of lateral cephalometric films in the evaluation of orthodontic patients, 16 certified orthodontists examined 80 sets of dental casts and lateral cephalograms. The patients included 5 subgroups: Class I with mild crowding, Class II Division 2, Class III, open bites, and bimaxillary protrusion. A 5-point Visual Analogue Scale was used
E K, Pae, G A, McKenna, T J, Sheehan, R, Garcia, A, Kuhlberg, R, Nanda   +5 more
openaire   +2 more sources

Relationship of nasal and skeletal landmarks in lateral cephalograms of preschool children

Forensic Science International, 2009
The purpose of this study was to investigate the relationship between cephalometric nasal and skeletal landmarks in preschool children. Lateral cephalograms of 80 Japanese preschool children (40 boys, mean age 5.4+/-0.3 years; 40 girls, mean age 5.2+/-0.1 years; total mean age 5.3+/-0.3 years) were traced, and 22 skeletal and 3 soft-tissue nasal points
Emi, Inada, Issei, Saitoh, Haruaki, Hayasaki, Yoko, Iwase, Naoko, Kubota, Yoshihiko, Tokemoto, Chiaki, Yamada, Youichi, Yamasaki   +7 more
openaire   +2 more sources

A comparative analysis of angular cephalometric values between CBCT generated lateral cephalograms versus digitized conventional lateral cephalograms.

International orthodontics, 2010
This study compared angular cephalometric values from scanned traditional lateral cephalograms versus CBCT generated slices. Traditional lateral cephalograms (using Orthoceph OC100) and volumetric CBCT imaging (using NewTom 3G Volume Scanner) were taken from 36 patients.
Raymond-R, Chung, Manuel-O, Lagravere, Carlos, Flores-Mir, Giseon, Heo, Jason P, Carey, Paul-W, Major   +5 more
openaire   +1 more source

Importance of Lateral Cephalogram in Treating Class III Patients

2014
Introduction: The need for an early identification and treatment of the skeletal Class III malocclusion is accepted worldwide. The treatment success in class III patients depends on the malocclusion type and the case individualization. The treatment choice is extremely difficult, and increases with involvement of the skeletal and occlusal structures ...
V. Ţărmure, O. C. Almăşan, D. Buhăţel, A. Ilea, P. Jiman, M. Iancu, A. Pop   +6 more
openaire   +1 more source