Bacterial colonization, enamel defects and dental caries in 4-6-year-old mono- and dizygotic twins

Ooi, Gregory, Townsend, Grant and Seow, W. Kim (2014) Bacterial colonization, enamel defects and dental caries in 4-6-year-old mono- and dizygotic twins. International Journal of Paediatric Dentistry, 24 2: 152-160. doi:10.1111/ipd.12041


Author Ooi, Gregory
Townsend, Grant
Seow, W. Kim
Title Bacterial colonization, enamel defects and dental caries in 4-6-year-old mono- and dizygotic twins
Journal name International Journal of Paediatric Dentistry   Check publisher's open access policy
ISSN 0960-7439
1365-263X
Publication date 2014-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.1111/ipd.12041
Open Access Status Not yet assessed
Volume 24
Issue 2
Start page 152
End page 160
Total pages 9
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell
Language eng
Abstract BackgroundKnowledge of the genetic and environmental influences in caries aetiology has relevance for preventive dentistry.
Formatted abstract
Background: Knowledge of the genetic and environmental influences in caries aetiology has relevance for preventive dentistry.

Aims: This classical twin study compared concordance of mutans streptococci (MS) and lactobacilli (LB) colonization, enamel defects, and caries in a cohort of 4-6-year-old mono- (MZ) and dizygotic (DZ) twin pairs.

Design: The twins were examined for prevalence and concordance of enamel opacities and hypoplasia, oral counts of MS and LB, and dental caries. Bacterial counts were assessed using a commercial microbiological kit.

Results: Thirty-four MZ and 50 DZ twins (mean gestational age 35.0 ± 2.4 weeks, and birthweight 2.4 ± 0.6 kg) were examined. There were no statistically significant differences between MZ and DZ twins in the prevalence of MS, LB, and enamel hypoplasia. Concordance rates for MS and LB presence and prevalence of enamel defects within MZ and DZ twin pairs were not significantly different. There were more children with caries in DZ compared with MZ twins (18% vs 3%, P = 0.0029), most likely due to increased daily frequency of sugar consumption and less toothbrushing.

Conclusions: Concordance data from MZ and DZ twins did not demonstrate any statistically significant difference in susceptibility for enamel defects and colonization of MS and LB. 
Keyword Dentistry, Oral Surgery & Medicine
Pediatrics
Dentistry, Oral Surgery & Medicine
Pediatrics
DENTISTRY, ORAL SURGERY & MEDICINE
PEDIATRICS
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Dentistry Publications
 
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