Predicting the actual length of premolar teeth on the basis of panoramic radiology

Background: Panoramic radiography is one of the most common techniques for evaluating the jaw bones and associated structures. Aim: The aim of the study was to predict the actual length of the premolar teeth, based on measurements taken on a panoramic radiograph. Materials and Methods: This study wa...

Full description

Saved in:
Bibliographic Details
Published inIndian journal of dental research Vol. 21; no. 4; pp. 468 - 473
Main Authors Yassaei, S, Ezoddini-Ardakani, F, Ostovar, N
Format Journal Article
LanguageEnglish
Published Mangalore Medknow Publications and Media Pvt. Ltd 01.10.2010
Medknow Publications & Media Pvt. Ltd
Wolters Kluwer Medknow Publications
Subjects
Dentistry
Distortion
magnification
Orthodontics
panoramic
Radiology
Size
Teeth
Online AccessGet full text

Cover

More Information
Summary:Background: Panoramic radiography is one of the most common techniques for evaluating the jaw bones and associated structures. Aim: The aim of the study was to predict the actual length of the premolar teeth, based on measurements taken on a panoramic radiograph. Materials and Methods: This study was done in two stages. In the first stage, the actual and panoramic lengths of 102 teeth of orthodontic patients were measured and compared. In the next stage, the actual and radiographic vertical lengths of four metal balls placed in the molar and first premolar areas of 27 patients, referred to radiography clinic were also analyzed. Comparison of the mean magnification between the two methods was performed by one-sample T-test and P<0.05 was considered as statistically significant. Results: The total magnification of the premolar region in the vertical plane in the tooth length measurement method was 17.39%, while the same in the metal markers method was 27.39%. The upper teeth showed larger magnification than the lower teeth in the vertical plane. Similarly, the magnification and distortion of the metal markers in the horizontal plane were significantly more than this in the vertical plane and also their magnification and distortion in the molar region were more than this in the premolar region. The actual length of the premolar teeth can be estimated by using a suitable regression formula. Conclusion: Panoramic radiography can be used for calculating the actual length of premolar teeth.
ISSN:0970-9290
1998-3603
DOI:10.4103/0970-9290.74207