S Peng

Association between Dental Caries and Adiposity Status (General, Central, and Peripheral Adiposity) in 12-Year-Old Children

Background/Aims: To investigate the cross-sectional relationship between dental caries experience and adiposity status (general, central, and peripheral adiposity) in 12-year-old children in Hong Kong. Methods: A random sample of 668 12-year-old students was recruited. Clinical assessment for dental caries (DMFT) was conducted using WHO criteria. Anthropometric measurements for body height, body weight, waist circumference (WC), hip circumference and triceps skinfold thickness (TRSKF) were performed to assess general adiposity (weight-height ratio, body mass index); central adiposity (WC; waist-hip ratio, WHR), and peripheral adiposity (TRSKF). Associations between adiposity indices and dental caries experience [prevalence DMFT >0, ‘high experience (DMFT ≥ SiC Index value) and ‘very high experience (DMFT ≥ SiC10 Index value)] were examined in bivariate and multivariate regression analyses. Results: The response rate was 76.9% (n = 514/668). Regression analyses (adjusted for oral hygiene practice, snacking habits, and socio-demographic factors) identified that WHR z score was associated with ‘high dental caries experience (OR 1.33, 95% CI 1.05, 1.70, p = 0.02), and that WHR z score was associated with ‘very high dental caries experience (OR 1.52, 95% CI 1.10, 2.11, p = 0.01). TRSKF z score was associated with ‘very high dental caries experience (OR 1.47, 95% CI 1.10, 1.96, p = 0.01). Conclusions: In a population-based sample of 12-year-old children in Hong Kong, dental caries experience was associated with adiposity. Central and peripheral, but not general adiposity was associated with dental caries experience.

Risk Factors of Developmental Defects of Enamel-A Prospective Cohort Study

Background and objective Current studies on the aetiology of developmental defects of enamel (DDE) are subject to recall bias because of the retrospective collection of information. Our objective was to investigate potential risk factors associated with the occurrence of DDE through a prospective cohort study. Methods Using a random community sample of Hong Kong children born in 1997, we performed a cohort study in which the subjects’ background information, medical and dental records were prospectively collected. A clinical examination to identify DDE was conducted in 2010 when the subjects were 12 years old. The central incisor, lateral incisor and first molar in each quadrant were chosen as the index teeth and were examined ‘wet’ by two trained and calibrated examiners using the modified FDI (DDE) Index. Results With a response rate of 74.9%, the 514 examined subjects had matched data for background information. Diffuse opacites were the most common type of DDE. Of the various possible aetiological factors considered, only experience of severe diseases during the period 0–3 years was associated with the occurrence of ‘any defect’ (pu200a=u200a0.017) and diffuse opacities (pu200a=u200a0.044). The children with experience of severe diseases before 3 years of age were 7.89 times more likely to be affected by ‘any defect’ compared with those who did not have the experience (OR 7.89; 95% CI 1.07, 58.14; pu200a=u200a0.043). However, after adjusting for confounding factors, the association no longer existed. Conclusion No variables could be identified as risk factors of DDE in this Hong Kong birth cohort.

Is dental caries experience associated with adiposity status in preschool children

BACKGROUNDnTo date, research on the relationship between dental caries experience and adiposity status is debated.nnnAIMnTo determine associations between dental caries experience and adiposity status among a community sample of preschool children in Hong Kong.nnnDESIGNnAmong a random sample of 5-year-old children, clinical assessment for dental caries was conducted using WHO criteria. Anthropometric measurements for body weight, body height, waist circumference (WC), hip circumference, and triceps skinfold thickness (TRSKF) were performed to assess general adiposity, central adiposity, and peripheral adiposity. Associations between adiposity status and caries were examined in regression analyses.nnnRESULTSnThe response rate was 83.1% (324/390). Regression analyses (adjusted for tooth brushing habits, snacking habits, and socio-demographic factors) identified that weight/height ratio z-score was associated with caries experience: prevalence of dental caries experience (dmft > 0), OR 1.41 (95% CI 1.04, 1.91), and very high caries experience (dmft ≥ SiC(10) Index value), OR 1.62, (95% CI 1.05, 2.50). In addition, WC z-score was associated with very high caries experience (dmft ≥ SiC(10) Index value), OR 1.72, 95% CI 1.06, 2.81.nnnCONCLUSIONnIn a Hong Kong community sample of preschool children, dental caries experience was associated with general adiposity (as assessed by weight/height ratio) and central adiposity (as assessed by WC).

The relationship between oral hygiene status and obesity among preschool children in Hong Kong

OBJECTIVESnTo explore the association between oral hygiene status and obesity among preschool children in Hong Kong.nnnMETHODSnThree hundred and twenty-four 5-year-old children in Hong Kong were recruited. Their oral hygiene status was recorded using visible plaque index (VPI). Body height, body weight, waist circumference (WC), hip circumference and triceps skinfold thickness (TRSKF) were measured to assess general adiposity (weight/height ratio, W/H; body mass index, BMI), central adiposity (WC; waist/hip ratio, WHR) and peripheral adiposity (TRSKF). The relationships between VPI and W/H, BMI, WC, WHR and TRSKF were examined in bivariate and regression analyses.nnnRESULTSnFifty-six per cent of the children were considered to have high VPI (VPIxa0≥xa065.0%). Logistic regression analyses identified that W/H z-score (ORxa0=xa01.28, 95% CIxa0=xa01.01-1.61) and WC z-score (ORxa0=xa01.25, 95% CIxa0=xa01.00-1.58) were associated with high VPI. No association was found after adjusted for socio-demographic status (Pxa0>xa00.05).nnnCONCLUSIONnOral hygiene status was not associated with obesity among 5-year-old children in Hong Kong after controlling for socio-demographic factors.

The association between infant growth and the occurrence of developmental defects of enamel at 12 years old

This journal suppl. is the Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry ... 2013This journal suppl. is the Special Issue: Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry, Seoul, Korea, 12-15 June, 2013This journal suppl. is the Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry ... 2013This journal suppl. is the Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry ... 2013This journal suppl. is the Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry ... 2013This journal suppl. is the Special Issue: Abstracts of the 24th Congress of the International Association of Pediatric Dentistry ... 2013

Body adiposity status in relation to oral hygiene status among preschool children in Hong Kong

This journal suppl. entitled: Special Issue: Abstracts of the 2012 FDI Annual World Dental CongressThis journal supplement is the Special Issue: Abstracts of the 2012 FDI Annual World Dental Congress, September 2012This journal supplement is the Special Issue: Abstracts of the 2012 FDI Annual World Dental Congress

Association between dental caries and central, peripheral and general obesity: findings from a Chinese birth cohort

This journal supplement is Special Issue: Abstracts of the 23rd Congress of the International Association of Paediatric Dentistry, 2011