Incisor Occlusion Affects Profile Shape Variation in Middle-Aged Adults.
adults
morphometrics
occlusion
overbite
overjet
profile shape
Journal
Journal of clinical medicine
ISSN: 2077-0383
Titre abrégé: J Clin Med
Pays: Switzerland
ID NLM: 101606588
Informations de publication
Date de publication:
17 Feb 2021
17 Feb 2021
Historique:
received:
30
01
2021
revised:
10
02
2021
accepted:
11
02
2021
entrez:
6
3
2021
pubmed:
7
3
2021
medline:
7
3
2021
Statut:
epublish
Résumé
The aim of this study was to assess the effect of overjet and overbite on profile shape in middle-aged individuals. The study population comprised 1754 46-year-old individuals, members of the 1966 Northern Finland Birth Cohort. Their profile images were digitized using 48 landmarks and semi-landmarks. The subsequent landmark coordinates were then transformed to shape coordinates through Procrustes Superimposition, and final data were reduced into Principal Components (PCs) of shape. Overjet and overbite values were measured manually, during a clinical examination. A multivariate regression model was developed to evaluate the effect of overjet and overbite on profile shape. The first nine PCs described more than 90% of profile shape variation in the sample and were used as the shape variables in all subsequent analyses. Overjet predicted 21.3% of profile shape in the entire sample (η Incisor occlusion has a noteworthy effect on profile shape in middle-aged adults. Its impact becomes more significant taking into consideration the large variety of genetic and environmental factors affecting soft tissue profile.
Sections du résumé
BACKGROUND
BACKGROUND
The aim of this study was to assess the effect of overjet and overbite on profile shape in middle-aged individuals.
METHODS
METHODS
The study population comprised 1754 46-year-old individuals, members of the 1966 Northern Finland Birth Cohort. Their profile images were digitized using 48 landmarks and semi-landmarks. The subsequent landmark coordinates were then transformed to shape coordinates through Procrustes Superimposition, and final data were reduced into Principal Components (PCs) of shape. Overjet and overbite values were measured manually, during a clinical examination. A multivariate regression model was developed to evaluate the effect of overjet and overbite on profile shape.
RESULTS
RESULTS
The first nine PCs described more than 90% of profile shape variation in the sample and were used as the shape variables in all subsequent analyses. Overjet predicted 21.3% of profile shape in the entire sample (η
CONCLUSION
CONCLUSIONS
Incisor occlusion has a noteworthy effect on profile shape in middle-aged adults. Its impact becomes more significant taking into consideration the large variety of genetic and environmental factors affecting soft tissue profile.
Identifiants
pubmed: 33671163
pii: jcm10040800
doi: 10.3390/jcm10040800
pmc: PMC7923002
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Oulun Yliopisto
ID : 24000692
Organisme : Oulun Yliopistollinen Sairaala
ID : 24301140
Organisme : European Regional Development Fund
ID : 539/2010 A31592
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