The Impact of Policy Modifiable Factors on Inequalities in Rates of Child Dental Caries in Australia

Social inequities in early childhood caries in Australia: A population-based study on statewide public dental services data

BACKGROUND

Social disadvantage leads to dental caries during childhood.

AIM

This study investigated whether dental caries occur earlier in children from households experiencing social disadvantage than those not experiencing social disadvantage.

DESIGN

The overall risk of, and relative time to, early childhood caries (ECC) according to sociodemographic characteristics in Victoria, Australia, was quantified. Records for 134 463 children in Victoria, Australia, from 2009 to 2019 were analysed. Time ratios (TR) and hazard ratios (HR) of carious lesion(s) in early childhood were estimated.

RESULTS

Compared with reference groups, Indigenous children had an adjusted TR of 0.80 (95% CI: 0.78, 0.82), children from households with languages other than English had an adjusted TR of 0.83 (95% CI: 0.82, 0.84), and dependants of concession cardholders had an adjusted TR of 0.81 (95% CI: 0.80, 0.81); therefore, 20%, 17% and 19% reduced times to the first carious lesion, respectively. The estimated HRs were 1.57 (95% CI: 1.49, 1.67) for Indigenous children, 1.46 (95% CI: 1.42, 1.50) for children from households with other languages and 1.57 (CI: 1.53, 1.60) for dependants of concession cardholders.

CONCLUSION

Preventive oral health interventions must be targeted early in children from households experiencing social disadvantage to avoid social inequities in ECC.

Curriculum mapping of health promotion competencies in dental and oral health training programmes in Australia

ISSUE ADDRESSED

Dental diseases are chronic conditions that place a significant burden on the population's health; however, they are mostly preventable using a range of health promotion strategies Health promotion is a core competency for all dental and oral health graduates, but little is known about what health promotion content is taught in undergraduate degrees. The aim of this study was to explore the dental and oral health content in Australian undergraduate dental and oral health degrees and map against the last two versions of the Australian Dental Council (ADC) health promotion competencies.

METHODS

All ADC-accredited dental and oral health courses delivered at Australian universities in 2019 were eligible to be included. Key words were used to locate subjects within the courses that contained health promotion content. This was analysed and ranked against the last two versions (2011 and 2016) of the ADC health promotion competencies. The competencies were then ranked using Blooms updated "six levels of thinking."

RESULTS

Seven oral health and eight dental courses were mapped. The number of health promotion subjects in courses varied substantially; the percentage of subjects that contained health promotion in oral health courses ranged from 30% to 75% and 16% to 60% for dental courses. All oral health courses were explicitly meeting the current ADC health promotion competencies, however, only half of the dental courses met the competency standards.

CONCLUSION

Curriculum mapping provided a snapshot of the health promotion content within dental and oral health degrees in Australia. Evaluations of the extent to which these courses meet the ADC competencies provide useful information for students, clinicians and policy makers. SO WHAT?: This study provides evidence that health promotion training is occurring at varying levels. However, in dentistry, not all the ADC health promotion competencies are being met. A change is needed in the ADC health promotion competencies and ethos of academics involved in the development of curriculum to include and give appropriate attention to health promotion theory, especially advocacy. This will enable future dental professionals to advocate for a range of oral health promotion activities such as water fluoridation, universal dental care and sugar-sweetened beverage taxes.

Comparative inequalities in child dental caries across four countries: Examination of international birth cohorts and implications for oral health policy

Child dental caries (i.e., cavities) are a major preventable health problem in most high-income countries. The aim of this study was to compare the extent of inequalities in child dental caries across four high-income countries alongside their child oral health policies. Coordinated analyses of data were conducted across four prospective population-based birth cohorts (Australia, n = 4085, born 2004; Québec, Canada, n = 1253, born 1997; Rotterdam, the Netherlands, n = 6690, born 2002; Southeast Sweden, n = 7445, born 1997), which enabled a high degree of harmonization. Risk ratios (adjusted) and slope indexes of inequality were estimated to quantify social gradients in child dental caries according to maternal education and household income. Children in the least advantaged quintile for income were at greater risk of caries, compared to the most advantaged quintile: Australia: AdjRR = 1.18, 95%CI = 1.04–1.34; Québec: AdjRR = 1.69, 95%CI = 1.36–2.10; Rotterdam: AdjRR = 1.67, 95%CI = 1.36–2.04; Southeast Sweden: AdjRR = 1.37, 95%CI = 1.10–1.71). There was a higher risk of caries for children of mothers with the lowest level of education, compared to the highest: Australia: AdjRR = 1.18, 95%CI = 1.01–1.38; Southeast Sweden: AdjRR = 2.31, 95%CI = 1.81–2.96; Rotterdam: AdjRR = 1.98, 95%CI = 1.71–2.30; Québec: AdjRR = 1.16, 95%CI = 0.98–1.37. The extent of inequalities varied in line with jurisdictional policies for provision of child oral health services and preventive public health measures. Clear gradients of social inequalities in child dental caries are evident in high-income countries. Policy related mechanisms may contribute to the differences in the extent of these inequalities. Lesser gradients in settings with combinations of universal dental coverage and/or fluoridation suggest these provisions may ameliorate inequalities through additional benefits for socio-economically disadvantaged groups of children.

Early predictors of childhood caries among 4-year-old children: a population-based study in north-eastern France

BACKGROUND

Untreated early childhood caries (ECC) can trigger a number of negative consequences, including pain, chewing difficulties, insufficient physical development and low academic performance. Therefore, ECC impacts the oral health-related to quality of life. That is why it is important to assess the ECC prevalence and to determine the associated risk factors.

AIM

The aim of this study was to investigate the relationship between early predictor factors and dental caries among 4-year-old French children, considering the socioeconomic factors, dietary and oral hygiene practices, the access and the follow-up by paediatric dentist.

DESIGN

The study was a cross-sectional observation. A random sample of 4-year-old children was selected among 596 Moselle's public nursery schools in north-eastern France. Data were gathered from clinical dental examinations and a structured questionnaire completed by parents.

RESULTS

In total, 425 subjects with completed questionnaires and clinical examinations were included. The prevalence of ECC and S-ECC (Severe-ECC), including only cavitated lesions, d3mft, were 15.8% and 5.9%, respectively. Multivariable logistic regression modelling identified four main factors associated with a high risk of ECC that were sweet intake (adjusted odds ratio OR_adjusted = 3.43, 95% CI = 1.57-7.53), brushing habits (OR_adjusted = 2.25, 95% CI = 1.23-4.21), childcare arrangement (OR_adjusted = 2.27, 95% CI = 1.23-4.21) and maternal educational level (OR_adjusted = 1.87, 95% CI = 1.06-3.31). These four factors have a cumulative effect. Only 4% of children presented teeth restoration.

CONCLUSIONS

This study highlighted the impact of the family environment on the oral health status of the preschool children. The identification of the risk factors should allow to strengthen preventive measures and initiate oral health education program for children and their family.

Home ownership, income and oral health of children in Australia-A population-based study

OBJECTIVE

Income inequalities in children's oral health have been well described. It is plausible that the security of tenure reflected by the ownership status of children's housing dynamically interacts with household income to shape these inequalities. We examined whether housing tenure modifies the known association between household income and oral health.

METHODS

Data were analysed on 3344 10- to 11-year-old children from the Longitudinal Study of Australian Children. Multivariable regression models tested associations between household income and dental caries and tooth loss due to caries. Effect modification by home ownership (yes/no) was tested on the additive and multiplicative scales. Models were adjusted for sex, Indigenous status, main language spoken at home, area of residence, main carer education and family arrangement.

RESULTS

Children in households in the low income group had worse oral health than children in the high group for caries and tooth loss. Models only weakly supported an additive interaction for tooth loss; that is, the relative excess risk due to interaction (RERI) for low household income was -0.903 (-2.38; 0.571) for tooth loss and -0.076 (-0.42; 0.271) for dental decay, although we note that the low proportion of children from low-income homeowning households (6%) reduces the power to detect interactions. Notably, our models suggest renters in both high- and low-income categories had the highest risk of tooth loss compared to owners (PR for high-income renters: 2.19 (95% CI: 1.25, 3.85); PR for low-income renters: 2.11 (95% CI: 1.42, 3.16)).

CONCLUSION

Our study confirms that children in low-income households have poorer oral health outcomes than their high-income counterparts. Our findings additionally suggest that children in rental households may fare the worst of all housing and income combinations considered. Improving the security of housing for families privately renting may have wider health benefits that currently acknowledged.

Oral health academics' conceptualisation of health promotion and perceived barriers and opportunities in dental practice: a qualitative study

BACKGROUND

Oral diseases place a significant burden on individual and population health. These diseases are largely preventable; health promotion initiatives have been shown to decrease the disease rates. However, there is limited implementation of health promotion in dentistry, this could be due to a number of factors; the ethos and philosophy of dentistry is focused on a curative, individualised approach to oral diseases, confusion around health promotion as a concept. Oral health academics are well placed to implement health promotion, training of these professionals needs to include prevention, as training influences dental practice. However, there is a little understanding about how oral health academics (dental professionals who educate dental and oral health students) view health promotion. The aim of this exploratory study is to understand how oral health academics conceptualise health promotion and perceive the barriers and possible opportunities for health promotion implementation in dental practice.

METHODS

Nominal group technique (NGT), a highly structured face-to-face meeting, was conducted with 24 oral health academics to explore how they conceptualize health promotion and the barriers and opportunities for health promotion in practice. An additional 4 questions were emailed to oral health educators after the NGT meeting to gather additional data, 6 oral health academics were involved. The data was analyzed using thematic analysis.

RESULTS

Three board themes were identified: "Knowledge, ideas and concepts of health promotion", "Challenges to health promotion", "Opportunities for health promotion practice". The oral health academics in this study discussed health promotion in a holistic way, however, health education and behaviour change were mentioned more than other aspects of health promotion. The structure of dental practice specifically the curative approach that underpins dentistry and the lack of funding, and value placed on health promotion could act as a challenge to health promotion being implemented in practice. There has been a shift towards prevention in dentistry, however the participants acknowledge there needs to be a change in the curative culture of the profession. Collaboration with other health professionals and using a common risk factor approach were the identified opportunities for health promotion practice.

CONCLUSIONS

Oral health academics have a holistic understanding of health promotion, but still focus more on behavioural approaches which is common within dentistry. For a change to occur in health promotion practice a change in the structure, curative approach and funding model of dentistry is required. Collaboration with other health professionals is an opportunity to be capitalised on. Training of future dental professionals is the perfect place to start to implement the changes and opportunities for health promotion presented in this paper.

Characterizing Socioeconomic Inequalities in Professionally Applied Topical Fluoride Treatment Courses in Schoolchildren from a Developing Country

The objective of the present study was to characterize socioeconomic inequalities in the patterns of professionally applied topical fluoride (PATF) in Mexican schoolchildren. A cross-sectional study was carried out on 3029 Mexican schoolchildren. A questionnaire was administered to caregivers to determine sociodemographic, socioeconomic, and behavioral variables. The dependent variable was prevalence of PATF, coded as 0 = without PATF and 1 = with PATF, at any point in life, and separately, in the previous year. Various indicators of socioeconomic position were included. Logistic regression was used in the final multivariate analysis. The prevalence of PATF any time in life was 33.8%, while in the previous year it was 11.4%. The variables associated (p < 0.05) with PATF any time in life were child's older age (OR = 1.12), older age when tooth brushing started (OR = 1.57), higher brushing frequency (OR = 1.60), having health insurance [public (OR = 1.61) or private (OR = 1.45)], if family owned a car (OR = 1.29) and better socioeconomic position [parents' education, second (OR = 1.48) and third (OR = 1.75) tertile]. For PATF in the previous year, the variables associated were older age of mother (OR = 1.03), older age when tooth brushing started (OR = 1.99), higher brushing frequency (OR = 1.68), having health insurance [public (OR = 1.62)] and better socioeconomic position (parents' education, second (OR = 1.57) and third (OR = 1.97) tertile). This study suggests the existence of socioeconomic inequalities in PATF, manifested through socioeconomic position, access to health insurance and household having a car. Identifying and addressing PATF inequalities would improve oral health in the child population.

Study of Mothers' and Infants' Life Events Affecting Oral Health (SMILE) birth cohort study: cohort profile

PURPOSE

The long-term goal of the Study of Mothers' and Infants' Life Events Affecting Oral Health (SMILE) birth cohort study is to identify and evaluate the relative importance and timing of critical factors that shape the oral health of young children. It will then evaluate those factors in their inter-relationship with socioeconomic influences.

PARTICIPANTS

SMILE is a single-centre study conducted in Adelaide, Australia. All newborns at the main three public hospitals between July 2013 and August 2014 were eligible for inclusion. The final recruited sample at birth was 2181 mother/infant dyads. Participants were followed up with questionnaires when the child was 3 and 6 months of age, and 1, 2 and 5 years of age. Oral epidemiological examinations and anthropometric assessments were conducted at age 2 and 5 years.

FINDINGS TO DATE

SMILE has contributed comprehensive data on dietary patterns of young children. Intakes of free sugars, core and discretionary foods and drinks have been detailed. There was a sharp increase in free sugars intake with age. Determinants of dietary patterns, oral health status and body weight during the first 5 years of life have been evaluated. Socioeconomic characteristics such as maternal education and household income and area-level socioeconomic profile influenced dietary patterns and oral health behaviours and status.

FUTURE PLAN

Funding has been obtained to conduct oral epidemiological examinations and anthropometric assessments at age 7-8 years. Plans are being developed to follow the cohort into adolescent years.