Dental and Medical Problems

Dent Med Probl
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ISSN 1644-387X (print)
ISSN 2300-9020 (online)
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Dental and Medical Problems

2017, vol. 54, nr 1, January-March, p. 35–40

doi: 10.17219/dmp/65837

Publication type: original article

Language: English

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Creative Commons BY-NC-ND 3.0 Open Access

Condylar guidance angles obtained from panoramic radiographic images: An evaluation of their reproducibility

Wartości kątów drogi stawowej uzyskiwane ze zdjęć pantomograficznych – ocena powtarzalności metody

Jolanta E. Loster1,A,B,C,D,F, Aneta Wieczorek1,B,F, Wojciech I. Ryniewicz1,A,C,E,F

1 Department of Dental Prosthetics, Institute of Dentistry, Jagiellonian University, Kraków, Poland

Abstract

Background. The method of using panoramic radiographic images to obtain numerical data on the condylar guidance angle has been described in the literature.
Objectives. The aim of the study was to verify the reproducibility of this technique.
Material and Methods. One panoramic radiographic image was randomly chosen from a group of 191 images. The digital image was converted to analog and printed. The study involved 21 dentists, who positioned 4 dots on each side of the image (the orbitale and the porion, as well as the most superior and the most inferior points of the jaw’s articular surface). The points on each side were connected with 2 lines, A and B. To evaluate the accuracy of the lines, the equation of the straight lines was calculated and their slopes compared. The condylar guidance angle between the lines was calculated.
Results. The spread of the results for the condylar guidance angle on the right side was 30 degrees; on the left side it was more than 40 degrees. The SD for the slope of line A was 0.01 on both sides. The slope of line B varied from 0.25 to 0.34.
Conclusion. The use of panoramic images to obtain the condylar guidance angle is not recommended in clinical use.

Key words

reproducibility, guidance angle, panoramic image, condylar guidance

Słowa kluczowe

powtarzalność metody, kąt stawowy, zdjęcie tomograficzne, droga stawowa

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