Kay at al (2010) compared the incidence of caries in children with average or higher birth weights and lengths. They found that children who weight more and are longer at birth, but not at present, tended to show more caries at age 5. They do not explain this phenomena, but encourage further research. Breastfeeding is a well-researched factor in caries development in children. Kotlow c.s. studied breastfeed children with a tight maxillary frenum and found them to have more caries in the upper front teeth. In these children this kind of caries is thus probably not due to extended and/or night-time breastfeeding (as often suggested) but to the inability of these children to remove milk residues from between the upper lip and the mandible. Early detection and treatment of this anatomic variation is urged by the authors. Kobayashi et al assessed the incidence of cross-bite in children who did not breastfeed with those who breastfed short time (<6 months), medium long (6-12 months or extended (> 12 months). Children who never breastfed had a 15 fold chance of crossbite, as compared to children who breastfed past their first birthday. Short and medium term breastfeeders showed a 4 to 10 fold increase. In long time breastfeeders only 2 out of 100 showed crossbite, but never breastfed children had a 1 in 3 incidence.
Kay EJ, Northstone K, Ness A, Duncan K, Crean SJ. Is there a relationship between Birthweight and subsequent growth on the development of Dental Caries at 5 years of age? A cohort study. Community Dent Oral Epidemiol 2010; 38: 408–414
Kotlow LA: The Influence of the Maxillary Frenum on the Development and Pattern of Dental Caries on Anterior Teeth in Breastfeeding Infants: Prevention, Diagnosis, and Treatment. J Hum Lact August 2010 26: 304-308
Kobayashi H, Scavone H, Ferreira RI, Garib DG: Relationship between breastfeeding duration and prevalence of posterior crossbite in the deciduous dentition.
American journal of orthodontics and dentofacial 2010, 137(1):54-58
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