Dataset Information

A longitudinal study of facial asymmetry in a normal birth cohort up to 6 years of age and the predisposing factors.

ABSTRACT:

Objectives

This prospective, population-based cohort study aimed to investigate the development of facial asymmetry up to 6 years of age using a three-dimensional (3D) soft tissue imaging method in a normal population. In addition, the study sought to identify potential predisposing factors to facial asymmetry.

Methods

A total of 102 newborns were enrolled in the study at birth. 3D stereophotogrammetric images of the head and face were analysed at the ages of 12 months (T1), 3 years (T2), and 6 years (T3). The surface-based analysis involved the calculation of the average distance (mm) and the symmetry percentage (%) between the original and mirrored surfaces. For landmark-based analysis, the distance of facial landmarks to the facial midline was examined.

Results

The final analysis included 70 (68.6%) subjects. Surface-based analysis showed a significant improvement of facial symmetry from T1 to T3 in all facial areas. Landmark-based analysis showed that upper facial landmarks were located, on average, slightly on the left and lower facial landmarks slightly on the right in relation to the facial midline (P < 0.001).

Limitations

The size of the study population was limited. Facial posture may affect the reliability of the results, especially in younger children.

Conclusion

Facial asymmetry is detectable in early childhood and tends to reduce with age in young children. The lower face deviates slightly to the right, and the upper face to the left in relation to the facial midline. Possible predisposing factors for facial asymmetry at the age of 6 years include deformational plagiocephaly, sleeping position, and previous facial asymmetry.

SUBMITTER: Launonen AM

PROVIDER: S-EPMC10389059 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Publications

A longitudinal study of facial asymmetry in a normal birth cohort up to 6 years of age and the predisposing factors.

Launonen Anniina M AM Vuollo Ville V Aarnivala Henri H Heikkinen Tuomo T Pirttiniemi Pertti P Valkama A Marita AM Harila Virpi V

European journal of orthodontics 20230701 4

<h4>Objectives</h4>This prospective, population-based cohort study aimed to investigate the development of facial asymmetry up to 6 years of age using a three-dimensional (3D) soft tissue imaging method in a normal population. In addition, the study sought to identify potential predisposing factors to facial asymmetry.<h4>Methods</h4>A total of 102 newborns were enrolled in the study at birth. 3D stereophotogrammetric images of the head and face were analysed at the ages of 12 months (T1), 3 yea ...[more]

PMID: 37036798

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Dataset Information

A longitudinal study of facial asymmetry in a normal birth cohort up to 6 years of age and the predisposing factors.

Objectives

Methods

Results

Limitations

Conclusion

Publications

A longitudinal study of facial asymmetry in a normal birth cohort up to 6 years of age and the predisposing factors.

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