Abstract
BackgroundIn western Sweden, the aim was to study the associations between oral health variables and total and central adiposity, respectively, and to investigate the influence of socio-economic factors (SES), lifestyle, dental anxiety and co-morbidity.MethodsThe subjects constituted a randomised sample from the 1992 data collection in the Prospective Population Study of Women in Gothenburg, Sweden (n = 999, 38- > =78 yrs). The study comprised a clinical and radiographic examination, together with a self-administered questionnaire. Obesity was defined as body mass index (BMI) > =30 kg/m2, waist-hip ratio (WHR) > =0.80, and waist circumference >0.88 m. Associations were estimated using logistic regression including adjustments for possible confounders.ResultsThe mean BMI value was 25.96 kg/m2, the mean WHR 0.83, and the mean waist circumference 0.83 m. The number of teeth, the number of restored teeth, xerostomia, dental visiting habits and self-perceived health were associated with both total and central adiposity, independent of age and SES. For instance, there were statistically significant associations between a small number of teeth (<20) and obesity: BMI (OR 1.95; 95% CI 1.40-2.73), WHR (1.67; 1.28-2.19) and waist circumference (1.94; 1.47-2.55), respectively. The number of carious lesions and masticatory function showed no associations with obesity. The obesity measure was of significance, particularly with regard to behaviour, such as irregular dental visits, with a greater risk associated with BMI (1.83; 1.23-2.71) and waist circumference (1.96; 1.39-2.75), but not with WHR (1.29; 0.90-1.85).ConclusionsAssociations were found between oral health and obesity. The choice of obesity measure in oral health studies should be carefully considered.
Highlights
In western Sweden, the aim was to study the associations between oral health variables and total and central adiposity, respectively, and to investigate the influence of socio-economic factors (SES), lifestyle, dental anxiety and co-morbidity
Irrespective of the number of teeth cut-off level, self-perceived general health was consistently statistically significant when body mass index (BMI) and waist circumference were used as the outcome variable: number of teeth as continuous variable, odds ratios (OR) 1.69 for BMI and 1.77 (1.26-2.50) for waist circumference, but not for waist-hip ratio (WHR) 1.26 (0.94-1.70)
The main findings were firstly, that the number of teeth was the factor most consistently associated with obesity in the study population and, secondly, that the choice of obesity measure was of significance for the results
Summary
In western Sweden, the aim was to study the associations between oral health variables and total and central adiposity, respectively, and to investigate the influence of socio-economic factors (SES), lifestyle, dental anxiety and co-morbidity. Studies indicate poor oral health in obese people [3]. Waist circumference [6] and waist-hip ratio (WHR) are used as indicators of centralised fat distribution [7,8]. All these variables have been identified to be related to a series of diseases, such as diabetes and cardiovascular disease [8,9]. In studies of oral health, different measures of obesity are less well investigated [4]
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