Primary tooth emergence in Australian singletons and twins

Townsend, G. C., Hughes, T., Mihailidis, S., Bockmann, M., Richards, L., Gully, N., Gotjamanos, T. and Seow, Wan K. (2009). Primary tooth emergence in Australian singletons and twins. In: Roesing, F. W., Henneberg, M. and Ulijaszek, S., HOMO - Journal of Comparative Human Biology. Meeting of Australasian Society for Human Biology, Dunedin, New Zealand, (289-290). 2007. doi:10.1016/j.jchb.2009.02.079

Author Townsend, G. C.
Hughes, T.
Mihailidis, S.
Bockmann, M.
Richards, L.
Gully, N.
Gotjamanos, T.
Seow, Wan K.
Title of paper Primary tooth emergence in Australian singletons and twins
Conference name Meeting of Australasian Society for Human Biology
Conference location Dunedin, New Zealand
Conference dates 2007
Proceedings title HOMO - Journal of Comparative Human Biology   Check publisher's open access policy
Journal name Homo-Journal of Comparative Human Biology   Check publisher's open access policy
Place of Publication Germany
Publisher Urban & Fischer Verlag
Publication Year 2009
Year available 2009
DOI 10.1016/j.jchb.2009.02.079
ISSN 0018-442X
Editor Roesing, F. W.
Henneberg, M.
Ulijaszek, S.
Volume 60
Issue 3
Start page 289
End page 290
Total pages 2
Language eng
Abstract/Summary Barrett and Brown studied tooth emergence in Aborigines living at Yuendumu in the Northern Territory of Australia (Barrett, 1957. Aust. Dent. J. 2, 217–227; Barrett, et al., 1964. Am. J. Phys. Anthropol. 22, 79–89; Brown, 1978. Ann. Hum. Biol. 5, 41–54). They showed that emergence timing of anterior primary teeth was delayed during the first year after birth but there was an increase in tempo in the second year. Emergence of anterior permanent teeth was also delayed in Aborigines but emergence of posterior teeth occurred earlier, third molars appearing at around 16 years of age. Although the sequence of emergence showed considerable variability, it was similar to other ethnic groups. Subsequently, we have investigated tooth emergence in singletons and twins of European ancestry. Analysis of records of over 8,500 Australian children showed that emergence of permanent teeth occurred later than reported previously (Diamanti and Townsend, 2003. Aust. Dent. J. 48, 39–42). We are now exploring primary tooth emergence in Australian twins, based on parental reports, and data for 190 pairs of twins have been analysed. The first teeth to emerge are generally the mandibular central incisors at around 8.7 months after birth, while the maxillary second molars are usually last at around 27.2 months. The most common sequence of emergence is central incisors, lateral incisors, first molars, canines and then second molars. Differences in emergence timing between the Aboriginal and non-Aboriginal samples reflect genetic and environmental effects, with infant mortality and morbidity and local factors within the dentition being important.
Subjects EX
920402 Dental Health
110507 Paedodontics
Q-Index Code EX
Q-Index Status Provisional Code

Document type: Conference Paper
Collection: School of Dentistry Publications
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Created: Tue, 09 Feb 2010, 14:21:16 EST by Margot Dallinger on behalf of School of Dentistry