In China, there is a massive rural–urban migration and the children

of migrants are often unregistered residents (a ‘floating population’). Aim.  This pilot study aimed to profile the oral health of migrant children in South China’s principal city of migration and identify its socio-demographic/behavioural determinants. Design.  An epidemiological survey was conducted in an area of Guangzhou among 5-year-old migrant children (n = 138) who received oral examinations check details according to the World Health Organization criteria. Parents’ oral health knowledge/attitude, child practices, and impact of children’s oral health on their quality-of-life (QoL) were assessed. Results.  The caries rate and mean (SD) dmft were 86% and 5.17 (4.16), respectively, higher than those national statistics for both rural and urban areas (P < 0.05). Oral hygiene was satisfactory (DI-S < 1.0) in 3% of children. Oral health impacts on QoL were considerable; 60% reported one or more impacts. 58% variance in ‘dmft’ was explained by ‘non-local-born’, ‘low-educated parents’, ‘bedtime feeding’, ‘parental unawareness of fluoride’s effect and importance of teeth’, and ‘poor oral hygiene’ (all P < 0.05). ‘Non-local-born’ and ‘dmft’ indicated poor oral health-related QoL (both P < 0.05), accounting for 32% of variance. Conclusion.  Oral health is poor among

rural–urban migrant children and requires effective interventions in targeted sub-groups. “
“International Journal of Paediatric Dentistry 2013; 23: 77–83 Background.  In Chile, no information is available regarding the soluble fluoride (F) content in the toothpastes commercialized for children and the country’s guidelines find more recommend the use of F in toothpastes in an age-dependent concentration. No global consensus has been reached on this EGFR inhibitor subject. Aim.  To determine the soluble F concentration in dentifrices for children sold in Chile and to discuss Chilean guidelines and professional recommendations of use. Design.  Three samples of twelve different dentifrices were purchased from drugstores. Toothpastes were analysed in duplicate using an ion-specific electrode. The concentrations of total

F (TF) and total soluble F (TSF) were determined (μg F/g). Results.  Measured TF was consistent with that declared by the manufacturer in eight products. Two dentifrices showed lower TF and two higher F concentrations than declared. A toothpaste, marketed as low-F (450 ppm), showed F concentration threefold higher. Most dentifrices exhibited TSF concentrations similar to the TF content, except one sample that displayed considerably lower TSF than TF. Recommendations on F toothpastes use in children widely vary from country to country. Conclusions.  Most dentifrices for children match F content in the labelling, but recommendations are not supported by the best evidence available on the benefit/risk of F toothpastes use. “
“The distribution of fluoride and calcium in plaque after the use of fluoride dentifrices has not yet been determined.