Volume 29, Number 3 (2-2017)                   jdm 2017, 29(3): 194-203 | Back to browse issues page


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Shirazi M, Mellat A, Salari B. The ability of panoramic radiographs to correlate transverse with sagittal dimensions in class III patients. jdm. 2017; 29 (3) :194-203
URL: http://jdm.tums.ac.ir/article-1-5563-en.html

1- Professor, Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2- Dentist
3- Post-Graduate Student, Department of Orthodontics, School of Dentistry Qazvin University of Medical Sciences, Qazvin, Iran
Abstract:   (1234 Views)

Background and Aims: In the field of orthodontics, gaining comprehensive information around dento-skeletal complex is necessary to choose the best treatment plan for each patient. The aim of this study was to investigate the linear and angular parameters in panoramic radiographs to find a path to correlate transvers to sagittal dimensions.

Materials and Methods: Total number of sixty two, 8-14 years old children who sought for orthodontic therapy were selected (32 skeletal Class III and 30 skeletal Class I). They were exposed to x-ray to obtain the panoramic and lateral views in a controlled condition. Various linear and angular parameters were measured after tracing the landmarks on the panoramic radiograph. Data were obtained and analyzed using T-test. The level of significance was set at 0.05 (P<0.05).

Results: Linear parameters of Co-Co, Go-Go and PTM-PTM were significantly lower in class III patients than class I ones (P=0.04, 0.04, 0.02, respectively). The ramus width value was also lower in class III patients. Angular parameters of  Me˄ and N˄ also showed the same results (P<0.001). Go˄ angle was significantly lower in the class I than class III patients (P=0.002, 0.007).

Conclusion: Some traceable linear and angular parameters were found in the panoramic radiographs which had the potential to correlate the transverse with sagittal dimension.

Full-Text [PDF 721 kb]   (339 Downloads)    
Type of Study: Research | Subject: general
Received: 2017/01/29 | Accepted: 2017/01/29 | Published: 2017/01/29

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