University of Oulu

Silinevica, S., Lokmane, K., Vuollo, V., Jakobsone, G., & Pirttiniemi, P. (2023). The association between dental and facial symmetry in adolescents. In American Journal of Orthodontics and Dentofacial Orthopedics (Vol. 164, Issue 3, pp. 340–350). Elsevier BV.

The association between dental and facial symmetry in adolescents

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Author: Silinevica, Signe1; Lokmane, Kristine2; Vuollo, Ville3,4,5;
Organizations: 1Department of Orthodontics, Institute of Stomatology, Riga Stradins University, Riga, Latvia
2Private practice, Baldone, Latvia
3Department of Oral Development and Orthodontics, Oulu University Hospital, Oulu, Finland
4Department of Oral Development and Orthodontics, Unit of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland
5Medical Research Center Oulu, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
Persistent link:
Language: English
Published: Elsevier, 2023
Publish Date: 2023-10-23


Introduction: Facial aesthetics have become one of the most important objectives of orthodontic treatment. The correction of dental arches should be performed in accordance with the face. This study explored the association between occlusal and facial asymmetries in adolescents, particularly emphasizing a Class II subdivision.

Methods: Eighty-one adolescents (43 males, 38 females) with a median age of 15.9 (interquartile range, 15.17–16.33) years were enrolled. Of these patients, 30 had a Class II subdivision (right side, n = 12; left side, n = 18). Three-dimensional facial scans were analyzed using surface- and landmark-based methods. Chin asymmetry was determined using the chin volume asymmetry score. Three-dimensional intraoral scans were analyzed to assess occlusal asymmetry.

Results: The surface matching scores were 59.0% ± 11.3% for the whole face and 39.0% ± 19.2% for the chin. Chin volume was larger on the right side than on the left side in most patients (n = 51, 63%), and it was associated with a dental midline shift to the corresponding subdivision side. A correlation between dental and facial asymmetries was noted. In addition, the dental midline shifted to the left in patients with a Class II subdivision, regardless of the side, and to the right in those with a symmetrical Class II subdivision. However, several patients did not possess asymmetrical occlusal traits sufficient for statistical analysis.

Conclusions: Dental asymmetry was weak but significantly correlated with facial asymmetry.

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Series: American journal of orthodontics and dentofacial orthopedics
ISSN: 0889-5406
ISSN-E: 1097-6752
ISSN-L: 0889-5406
Volume: 164
Issue: 3
Pages: 340 - 350
DOI: 10.1016/j.ajodo.2023.01.015
Type of Publication: A1 Journal article – refereed
Field of Science: 313 Dentistry
Funding: This work was supported by an internal grant from Riga Stradins University.
Copyright information: © 2023 The Authors. The American Association of Orthodontists. This is an open access article under the CC BY-NC-ND license (