Stunting Malnutrition Associated with Severe Tooth Decay in Cambodian Toddlers

A scoping review of the links between early childhood caries and clean water and sanitation: the Sustainable Development Goal 6

INTRODUCTION

The United Nation's Sustainable Development Goal (SDG) 6 calls for universal access to clean water, sanitation and hygiene (WASH), which are crucial elements of health and well-being and fundamental for a life in dignity. Early childhood caries (ECC) is a preventable disease affecting health and quality of life of millions of young children worldwide. This scoping review aims to explore the connection between ECC and access to clean water and sanitation.

METHODS

This scoping review, registered on the Open Science Framework and following PRISMA-ScR guidelines, conducted a thorough search in databases (PubMed, Web of Science, Embase, Google Scholar, SciELO) and websites (via Google) in November 2023. The search, without date limitations, targeted studies in English and Spanish linking ECC to SDG6. Exclusions were made for studies solely focusing on ECC without a direct connection to clean water and sanitation. Descriptive statistics summarized the retrieved papers.

RESULTS

The initial search yielded 303 articles. After removing duplicates, 264 articles remained for title and abstract screening after which 244 were excluded and one report was added through citation searching. The 21 remaining articles underwent full text review. There were no studies on a direct association between access to clean water and sanitation and the prevalence of ECC. There were nine studies that showed indirect associations between ECC and access to clean water and sanitation through the links of: water and sanitation access as a marker for poverty (n = 1), water consumption as a feeding practice (n = 4), and the effectiveness of water fluoridation (n = 4). These were used to develop a conceptual model.

CONCLUSIONS

While it is conceivable that a direct link exists between ECC and access to clean water and sanitation, the available body of research only offers evidence of indirect associations. The exploration of potential pathways connecting water access to ECC warrants further investigation in future research.

Nutritional factors associated with early childhood caries: A systematic review and meta-analysis

Background

Many studies have examined the relationship between nutrition and dental caries. However further studies are needed regarding nutritional factors that can have a strong impact on the incidence of early childhood caries (ECC). Nutrition is one factor that determines caries occurrence. Exposure to carbohydrates in the oral cavity causes carbohydrate fermentation, which produces acids. This acidic substance erodes the enamel surface of teeth, leading to ECC. This systematic review and meta-analysis of cohort studies assessed the aspects of nutrition and diet that contribute to the incidence of ECC in children.

Materials and methods

We conducted a systematic review by extracting data according to Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. A search was conducted of published articles in Scopus, MEDLINE via PubMed, and Science Direct using the keywords "nutrition," "sugar," "carbohydrate," "dietary habit," "dental caries," and "oral health." The protocol was registered at PROSPERO 2023 (Registration ID: CRD42023394583).

Results

The article screening yielded 6 articles that met the inclusion criteria. From the total of 443 studies found. Those that could not determine a correlation between the ECC variables and nutrition and with data analyses that only used a bivariate analysis were excluded. The results of the meta-analysis showed that nutritional factors had the strongest impact on caries including feeding practice (OR 3.64; 95% CI 2.03, 6.55), sugar intake (OR 3.24; 95% CI 2.59, 4.03), and low fruit and vegetable intake (OR 2.71; 95% CI 1.47, 5.01).

Conclusion

Two nutritional factors had the strongest relationship with the risk of ECC: feeding practice and sugar intake. The lowest risk factor for causing ECC was low fruit and vegetable intake.

Sugar-Sweetened Beverages, Foods of Low Nutritional Value, and Child Undernutrition in Cambodia

Child undernutrition persists in Cambodia despite recent progress. As Cambodia undergoes a shift in dietary consumption that coincides with economic, demographic, and epidemiologic changes, there is risk of ultra-processed foods and sugar-sweetened beverages displacing nutrient-dense foods during the critical period of infant growth in the first 24 months. The aim of this study was to assess the introduction and intake of foods of low nutritional value and sugar-sweetened beverages and their association with undernutrition among children 24 months of age in rural and semi-urban Cambodia. Cross-sectional analyses of a 24-h dietary recall from a sample (n = 377) of 24-month-olds found that the majority of infants had been introduced to packaged salty snacks and sweets by 12 months of age and to sugar-sweetened beverages by 15 months. By 24 months of age, 78% of children had consumed foods of low nutritional value and 57% consumed a sugar-sweetened beverage on the previous day. Multivariate logistic regression analyses demonstrated that infant intake of a flavored sugary drink on the previous day was associated with over two times the odds of both stunting and wasting, and consumption of packaged sweets on the previous day was associated with over two times the odds of wasting, but no association was found with stunting. These findings underscore the need to improve educational and policy interventions to support healthy feeding practices for infants and young children.

A Review on Maternal Parenting, Child's Growth Stunting, and Oral Health

Stunting has gained global attention as one of the most critical problems in public health. As the first and dominant figure in a child's life, the mother is responsible for determining the proper parenting behaviors to apply to maintain the child's physical health. Stunting is often associated with early childhood caries (ECC) and molar incisor hypomineralization, which can be manifested into each other through various mechanisms. Therefore, it is crucial to explore how far maternal parenting behaviors affect stunting and oral health. This study aims to determine which maternal parenting behaviors can affect stunting and oral health. A systematic search was used through PubMed and Google Scholar to search for published articles between 2011 and 2021. The articles analyze maternal parenting behaviors with stunting and poor oral health. Final analysis was used on 21 articles containing 18 cross-sectional studies, 2 cohort studies, and 1 randomized controlled trial. The result implied that the high prevalence of stunting and ECC is the combined result of prolonged breastfeeding practices (7 articles), poor complementary feeding practice (6 articles), high consumption of sugar (5 articles), and poor oral hygiene practices (5 articles). Maternal parenting styles in the aspect of fulfilling nutrition and maintaining oral health affect the occurrence of stunting and ECC in children.

The bi-directional relationship between growth stunting and early childhood caries: a rapid review

Objective

This review aims to determine the two-way relationship between stunting and ECC in developing countries worldwide.

Methods

The procedure in this study was carried out using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis-Rapid Review protocol. Article searches were carried out using databases Cochrane and PubMed. In addition, searches were also carried out using backward and forward snowballing techniques to identify articles that were not detected through database searches.

Results

Nine observational epidemiological articles were found in children aged six months to six years, published in 2015-2020. Five articles discussed the features of ECC in stunted children, and the other five discussed stunting in children with caries in their primary teeth.

Conclusion

Several studies found associations between severe ECC and stunting, with ECC and stunting as both independent and dependent variables, suggesting a bi-directional relationship, also supported by literature on the physiological relationship between oral health and nutrition.

Caries Incidence Is Associated with Wasting among Cambodian Children

Evidence suggests that dental caries is associated with chronic and acute malnutrition, manifested as stunting and wasting in children. However, studies have not always appropriately accounted for confounding factors or for the temporal ordering between exposure and outcome. This study examined relationships between the development of caries lesions with subsequent stunting and wasting outcomes using data from a population-based cohort in Cambodia. Caries incidence was assessed based on the presence of a new cavitated carious lesion or a new pulpally involved lesion across a 6-mo observation period. Anthropometric measurements were taken at regular intervals. Effects of carious lesions on stunting and wasting were assessed using inverse probability treatment weighting, adjusting for potential confounders, using z scores for height-for-age (HAZ) and weight-for-height (WHZ) as outcomes. In total, 894 children (mean age 20 mo at baseline) were followed over 2 y. At baseline, 350 (39.1%) were identified as having stunting malnutrition. At follow-up, 58 (6.5%) had a new pulpally involved lesion. There was no association between incidence of cavitated or pulpally involved carious lesions at follow-up and stunting (relative risk [RR] = 1.06; 95% confidence interval [CI]: 0.75, 1.50). The incidence of pulpally involved carious lesions had an effect on wasting prevalence (WHZ <-2; RR = 1.35; 95% CI: 0.70, 2.62) and WHZ scores (average treatment effect = -0.294; 95% CI: -0.538, -0.050). This study offers evidence that the development of pulpally involved carious lesions has an effect on WHZ scores. Oral health promotion and clinical prevention and management of dental caries should be explored as interventions to promote normal growth and development among preschool children, particularly in low-income settings.

Associations between Maternal Education and Child Nutrition and Oral Health in an Indigenous Population in Ecuador

The global nutrition transition has increased the prevalence of childhood dental caries. Greater understanding is needed of the impact of social determinants—including maternal education—on child oral health. This is a cross-sectional analysis of a convenience sample of families of 458 indigenous Ecuadorian children aged 6 months through 6 years from 2011−2013. Data was collected by mother interviews and child dental and anthropometric examinations. Multivariate logistic and Zero-Inflated-Poisson regression analyses assessed associations between years of maternal education and maternal-child oral health practices and child oral health outcomes. Each additional year of maternal education was significantly (p < 0.05) associated with some healthier practices including greater likelihood of mothers and children drinking milk daily (OR 1.20; 95% CI 1.08, 1.34); and less healthy practices including greater likelihood of bottle-feeding children with sugary liquids (OR 1.14; 95% CI 1.06, 1.22) and to older age, giving children sweets daily, calming children with a bottle or sweets, and less likelihood of helping brush their children’s teeth (OR 0.93; 95% CI 0.88, 0.98). Each year of maternal education had a small but statistically non-significant influence on increasing the odds of children being among those who are cavity-free (OR 1.03; 95% CI 0.92, 1.16). Interventions to improve health outcomes should focus not just on maternal education but also address social and commercial determinants of health through nutrition and oral health education, as well as policies to reduce sugar and ensure universal access to oral health care.

Stunted children display ectopic small intestinal colonization by oral bacteria, which cause lipid malabsorption in experimental models

Environmental enteric dysfunction (EED) is an inflammatory syndrome postulated to contribute to stunted child growth and to be associated with intestinal dysbiosis and nutrient malabsorption. However, the small intestinal contributions to EED remain poorly understood. This study aimed to assess changes in the proximal and distal intestinal microbiota in the context of stunting and EED and to test for a causal role of these bacterial isolates in the underlying pathophysiology. We performed a cross-sectional study in two African countries recruiting roughly 1,000 children aged 2 to 5 years and assessed the microbiota in the stomach, duodenum, and feces. Upper gastrointestinal samples were obtained from stunted children and stratified according to stunting severity. Fecal samples were collected. We then investigated the role of clinical isolates in EED pathophysiology using tissue culture and animal models. We find that small intestinal bacterial overgrowth (SIBO) is extremely common (>80%) in stunted children. SIBO is frequently characterized by an overgrowth of oral bacteria, leading to increased permeability and inflammation and to replacement of classical small intestinal strains. These duodenal bacterial isolates decrease lipid absorption in both cultured enterocytes and mice, providing a mechanism by which they may exacerbate EED and stunting. Further, we find a specific fecal signature associated with the EED markers fecal calprotectin and alpha-antitrypsin. Our study shows a causal implication of ectopic colonization of oral bacterial isolated from the small intestine in nutrient malabsorption and gut leakiness in vitro. These findings have important therapeutic implications for modulating the microbiota through microbiota-targeted interventions.

Associations between dental caries and ponderal growth in children: A Cambodian study

Background

The evidence around the relationship between Early Childhood Caries (ECC) and undernutrition is sparse and mostly reported from cross-sectional data sets. This paper aimed to test the relationship between ECC and linear and ponderal growth trajectories.

Methods

This project involves secondary data analysis from the Cambodia Longitudinal Health and Nutrition Study. The analytical sample included a 2y-cohort of 894 children who were younger than 2 years of age at the time of first height and weight measurement. Statistical analysis used both logistic regression modelling and Latent Class Analysis to examine the effect of exposure to dental caries in the first 1000 days on weight for height Z-score (WHZ) and height for age Z-score (HAZ) trajectory class groups. The presence of any cavity and pulp involvement were examined using multinomial regression adjusting for gender, socioeconomic status, maternal age and education.

Findings

Within each class groupings (HAZ and WHZ groupings), there was a trend whereby those with one or more cavities had lower Z-scores across the three follow-up time points of observation. There was an association between exposure to caries and WHZ class membership whereby children with caries exposure were more likely belong to WHZ class groups with lower Z-scores over time.

Conclusions

The study offers evidence that ECC is correlated with less favourable ponderal growth categorized by WHZ trajectory class groups.

Individual, Family, and Socioeconomic Contributors to Dental Caries in Children from Low- and Middle-Income Countries

Introduction: Collective evidence on risk factors for dental caries remains elusive in low- and middle-income countries (LMICs). The objective was to conduct a systematic review and meta-analysis on risk factors for dental caries in deciduous or permanent teeth in LMICs. Methods: Studies were identified electronically through databases, including Cochrane Oral Health Group Trials Register, Cochrane Central Register of Controlled Trials, PubMed/MEDLINE, and CINAHL, using “prevalence, dental caries, child, family, socioeconomic, and LMIC” as the keywords. A total of 11 studies fit the inclusion criteria. Quality assessment of the included studies was performed using the Newcastle-Ottawa Scale (NOS). The MedCalc software and Review Manager 5.4.1 were used. Results: From 11,115 participants, 38.7% (95% CI: 28.4−49.5%) had caries and 49.68% were female. Among those with caries, 69.74% consumed sugary drinks/sweets (95% CI: 47.84−87.73%) and 56.87% (95% CI: 35.39−77.08%) had good brushing habits. Sugary drinks had a two times higher likelihood of leading to caries (OR: 2.04, p < 0.001). Good oral hygiene reduced the risk of caries by 35% (OR: 0.65, p < 0.001). Concerning maternal education, only secondary education reduced the likelihood of caries (OR: 0.96), but primary education incurred 25% higher risks (OR: 1.25, p = 0.03). A 65% reduction was computed when caregivers helped children with tooth brushing (OR: 0.35, p = 0.04). Most families had a low socioeconomic status (SES) (35.9%, 95% CI: 16.73−57.79), which increased the odds of caries by 52% (OR: 1.52, p < 0.001); a high SES had a 3% higher chance of caries. In the entire sample, 44.44% (95% CI: 27.73−61.82%) of individuals had access to dental services or had visited a dental service provider. Conclusion: Our findings demonstrate that high sugar consumption, low maternal education, and low and high socioeconomic status (SES) increased the risk of dental caries in LMICs. Good brushing habits, higher maternal education, help with tooth brushing, and middle SES provided protection against caries across LMIC children. Limiting sugars, improving oral health education, incorporating national fluoride exposure programs, and accounting for sociodemographic limitations are essential for reducing the prevalence of dental caries in these settings.