A study on nutritional status and tooth crown size among 6–9-year-old children: An observational cross-sectional study

Abstract

Background:Numerous factors contribute to variation in tooth size. This is broadly described as genetic, epigenetic, and environmental factors. A strong genetic contribution has been shown, but environmental factors may also play a role.Aim:The aim of this study was to determine the relationship between nutritional status and tooth crown size.Design:An observational cross-sectional survey was conducted among 100 school-going children of 6–9 years. The value obtained was plotted on age- and gender-specific percentile curves chart given by the Centers for Disease Control and Prevention; individuals were categorized based on body mass index criteria. The participants were examined for the mesiodistal width of primary second molar and permanent first molar by three different observers using a Vernier Caliper. Data obtained were statistically analyzed.Results:total of 45, 40, and 15 belonged to underweight, normal, and overweight category, respectively. The tooth size of primary molar between healthy, overweight, and underweight children was 9.87 ± 0.23, 9.47 ± 0.48, and 9.61 ± 0.7, respectively, and for permanent molar between healthy, overweight, and underweight children was 10.63 ± 0.2, 10.56 ± 0.5, and 10.57 ± 0.6, respectively.Conclusion:The correlation between tooth crown size with an exogenous chronic stressor, i.e., malnutrition, was found to be nonsignificant when compared with the healthy individuals. The findings indicate that nutritional status does not significantly influence the determination of tooth size in humans.

Heritability and genetic integration of anterior tooth crown variants in the South Carolina Gullah

“…These expectations were born out in Guatelli‐Steinberg and colleagues’ (2006) study of the same casts, in which fluctuating and directional odontometric asymmetry was higher than expected, even when compared with Late Prehistoric and Late Archaic period populations. The effects of developmental stress on dental tissues are well‐known (Corruccini, Townsend, & Schwerdt, ; Fearne & Brook, ; Garn, Osborne, & McCabe, ; Harila‐Kaera, Keikkinen, Alvesalo, & Osborne, ; McKee & Lunz, ; Riga, Belcastro, & Moggi‐Cecchi, ; Zameer et al, ). As such, the low to moderate estimates of heritability reported here should not be over‐interpreted, and in fact, the pattern of values is more relevant than their absolute values.…”

Tanaka and Johnston Space Analysis: Does It Apply to All Populations?

“…This is supported by another studies that found a strong genetic component responsible for the variation in tooth size in addition to the epigenetic and environmental aspects could contribute to phenotypic disparity, so an interaction among these factors will affect the size of the teeth. 30 31 On the other hand, Zameer et al 32 suggested that the nutritional status did not significantly affect the determination of human tooth size.…”