Genetic and environmental contributions to the development of soft tissue facial profile: a twin study.

ABSTRACT:

Objectives

This study aimed to determine the relative contribution of genetic and environmental factors in the phenotypic variation of the soft tissue facial profile during the mixed dentition and the permanent dentition stages.

Methods

In this retrospective cohort study, standardized facial profile photographs of 139 twin pairs (55 monozygotic and 84 dizygotic) were obtained from archival records at the Adelaide Dental School. Photographic analysis used 12 angular and 14 linear facial profile measurements from the mixed dentition (7-11 years) to the permanent dentition (12-17 years) stages. A genetic analysis was performed using a univariate structural equation model adhering to the normal assumptions of a twin model.

Results

In the mixed dentition stage, the additiv

SUBMITTER: Giri J 

PROVIDER: S-EPMC11398901 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature