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Article: Soft tissue facial changes among adult females during alignment stage of orthodontic treatment: a 3D geometric morphometric study

TitleSoft tissue facial changes among adult females during alignment stage of orthodontic treatment: a 3D geometric morphometric study
Authors
KeywordsSoft tissue
Face
Orthodontic treatment
Geometric morphometrics
Quasi-landmarks
Issue Date2021
PublisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedcentral.com/bmcoralhealth/
Citation
BMC Oral Health, 2021, v. 21 n. 1, p. article no. 57 How to Cite?
AbstractBackground: To investigate changes in facial morphology during the first six months of orthodontic treatment among adult females receiving orthodontic treatment. Methods: 43 adult females receiving orthodontic treatment were randomly recruited. 3D facial images were taken at baseline (T0), three months (T1), and six months (T2) after treatment initiation. Spatially dense facial landmarks were digitized to allow for sufficient details in characterization of facial features. 3D geometric morphometrics and multivariate statistics were used to investigate changes in mean and variance of facial shape and facial form associated with treatment. Results: We observed statistically significant changes in facial shape across the three treatment stages (p = 0.0022). Pairwise comparisons suggested significant changes from T0 to T1 (p = 0.0045) and from T0 to T2 (p = 0.0072). Heatmap visualization indicated that the buccal and temporal region were invaginated while the labial region became protruded with treatment. The magnitude of shape change was 0.009, 0.004, and 0.010 from T0 to T1, T1 to T2, and T0 to T2, respectively, in unit of Procrustes distance. The average magnitude of change per-landmark was 1.32 mm, 0.21 mm, and 1.34 mm, respectively. Changes in mean facial form were not statistically significant (p = 0.1143). No changes in variance of facial shape were observed across treatment stages (p > 0.05). Conclusion: Rate of facial changes was twice as fast during the first three months as that during fourth to sixth month. Buccal and temporal region became invaginated while labial region became protruded with treatment.
Persistent Identifierhttp://hdl.handle.net/10722/301247
ISSN
2020 Impact Factor: 2.757
2015 SCImago Journal Rankings: 0.616
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorHou, SY-
dc.contributor.authorZhou, W-
dc.contributor.authorDai, H-
dc.contributor.authorWong, HM-
dc.contributor.authorWen, YF-
dc.contributor.authorZhou, J-
dc.date.accessioned2021-07-27T08:08:17Z-
dc.date.available2021-07-27T08:08:17Z-
dc.date.issued2021-
dc.identifier.citationBMC Oral Health, 2021, v. 21 n. 1, p. article no. 57-
dc.identifier.issn1472-6831-
dc.identifier.urihttp://hdl.handle.net/10722/301247-
dc.description.abstractBackground: To investigate changes in facial morphology during the first six months of orthodontic treatment among adult females receiving orthodontic treatment. Methods: 43 adult females receiving orthodontic treatment were randomly recruited. 3D facial images were taken at baseline (T0), three months (T1), and six months (T2) after treatment initiation. Spatially dense facial landmarks were digitized to allow for sufficient details in characterization of facial features. 3D geometric morphometrics and multivariate statistics were used to investigate changes in mean and variance of facial shape and facial form associated with treatment. Results: We observed statistically significant changes in facial shape across the three treatment stages (p = 0.0022). Pairwise comparisons suggested significant changes from T0 to T1 (p = 0.0045) and from T0 to T2 (p = 0.0072). Heatmap visualization indicated that the buccal and temporal region were invaginated while the labial region became protruded with treatment. The magnitude of shape change was 0.009, 0.004, and 0.010 from T0 to T1, T1 to T2, and T0 to T2, respectively, in unit of Procrustes distance. The average magnitude of change per-landmark was 1.32 mm, 0.21 mm, and 1.34 mm, respectively. Changes in mean facial form were not statistically significant (p = 0.1143). No changes in variance of facial shape were observed across treatment stages (p > 0.05). Conclusion: Rate of facial changes was twice as fast during the first three months as that during fourth to sixth month. Buccal and temporal region became invaginated while labial region became protruded with treatment.-
dc.languageeng-
dc.publisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedcentral.com/bmcoralhealth/-
dc.relation.ispartofBMC Oral Health-
dc.rightsBMC Oral Health. Copyright © BioMed Central Ltd.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectSoft tissue-
dc.subjectFace-
dc.subjectOrthodontic treatment-
dc.subjectGeometric morphometrics-
dc.subjectQuasi-landmarks-
dc.titleSoft tissue facial changes among adult females during alignment stage of orthodontic treatment: a 3D geometric morphometric study-
dc.typeArticle-
dc.identifier.emailWong, HM: wonghmg@hkucc.hku.hk-
dc.identifier.authorityWong, HM=rp00042-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1186/s12903-021-01425-2-
dc.identifier.pmid33563265-
dc.identifier.pmcidPMC7874451-
dc.identifier.scopuseid_2-s2.0-85100754133-
dc.identifier.hkuros323577-
dc.identifier.volume21-
dc.identifier.issue1-
dc.identifier.spagearticle no. 57-
dc.identifier.epagearticle no. 57-
dc.publisher.placeUnited Kingdom-

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