https://www.selleckchem.com/GSK-3.html OBJECTIVE To investigate the method, learning and challenges of using an enhanced sample to provide small area data for the dental survey of five-year-old children in England. DESIGN Pilot in six London local authorities, of increased sample size during a national survey to enable a more precise sample size calculation to deliver information accurate at electoral ward level. Challenges were explored through interviews with the teams who either planned or conducted the survey. MAIN OUTCOME MEASURES A revised sample size recommendation for the national guidance on carrying out dental surveys of five-year-old children in England, where caries levels are similar to those seen in the pilot areas; the challenges identified were gaining access to schools and consent from parents, making the calculation for the additional sample and securing sufficient workforce. CONCLUSION This paper has described a method for delivering small area caries data by increasing the size of the sample. Learning, and understanding the outcomes and challenges from this work can inform planning and delivery of future surveys using an enhanced sample at ward level. Copyright© 2020 Dennis Barber Ltd.OBJECTIVE To determine the association between maternal oral health and Early Childhood Caries (ECC) and discover the role of maternal and child behaviours in explaining this association. BASIC RESEARCH DESIGN A cross-sectional analytic study. CLINICAL SETTING Public Healthcare Services in Pasto, Colombia. PARTICIPANTS 384 mothers and their 2-5-year-old children. METHODS Mothers completed a questionnaire to provide information on sociodemographic and behavioural factors and were examined for caries experience (DMFS index) and periodontal status (Community Periodontal Index, CPI). Children were examined for dental caries (dmfs index). The association between maternal dental indicators and child dmfs was assessed in negative binomial regression adjusting for confounde