Skip to content
Journal article

Genetic modeling of primary tooth emergence: a study of Australian twins.

Bockmann M, Hughes T, Townsend G...(+3 more)

Twin research and human genetics : the official journal of the International Society for Twin Studies, vol. 13, issue 6 (2010) pp. 573-81

  • 4


    Mendeley users who have this article in their library.
  • 12


    Citations of this article.
  • N/A


    ScienceDirect users who have downloaded this article.
Sign in to save reference


The aim of this study was to quantify contributions of genetic and environmental factors to variation in timing of emergence of the primary teeth in a sample of monozygotic and dizygotic twins, using univariate model-fitting approaches. The sample comprised 94 pairs of monozygotic twins and 125 pairs of dizygous twins, all of European ancestry, aged from 2-6 years. Tooth emergence timing was based on parental report, with a subset of data validated by clinical assessment. Heritability estimates for tooth emergence timing were generally high, around 90%, however estimates for the lower right lateral incisor and the lower canines were around 50%. These findings confirm a strong genetic influence on observed variation in the timing of emergence of the human primary teeth.

Author-supplied keywords

  • Australia
  • Child
  • Deciduous
  • Deciduous: physiology
  • Dizygotic
  • Dizygotic: genetics
  • Female
  • Genetic
  • Humans
  • Male
  • Models
  • Monozygotic
  • Monozygotic: genetics
  • Preschool
  • Tooth
  • Tooth Eruption
  • Tooth Eruption: genetics
  • Twins

Find this document

Get full text

Cite this document

Choose a citation style from the tabs below