Occlusal and facial features in Amazon indigenous: An insight into the role of genetics and environment in the etiology dental malocclusion

Souza, Bento Sousa de; Bichara, Lívia Monteiro; Guerreiro, João Farias; Mendes, Alvaro de Moraes; Normando, David

doi:10.1016/j.archoralbio.2015.04.007

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…Not surprisingly, a significant increase in age mapped onto all of these orthodontic measures, which supports the findings of previous studies on oral health among small-scale societies [47, 48, 49], including rural populations in Tanzania [50]. No significant degree of dental crowding or third molar occlusion were found in any residential group, between sexes, or across ages, which also is also consistent with findings of previous studies of some populations outside of the post-industrialized west [29, 51, 52, 53], including rural Tanzania [54]—but for contradictory results concerning M3 occlusion, see [55]. …”

Section: Methodssupporting

confidence: 91%

Oral health in transition: The Hadza foragers of Tanzania

Crittenden¹,

Sorrentino²,

Moonie³

et al. 2017

PLoS ONE

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Conventional wisdom holds that a decline in oral health accompanies the transition from hunting and gathering to agriculture, given increased consumption of carbohydrates. This widely touted example of the mismatch between our biology and modern lifestyle has been intuited largely from the bioarchaeological record of the Neolithic Revolution in the New World. Recent studies of other populations have, however, challenged the universality of this assertion. Here, we present the first comprehensive study of oral health among a living population in transition from the bush to village life, the Hadza hunter-gatherers of Tanzania, to test the hypothesis that the shift from foraging to farming, or agricultural intensification, inevitably leads to increased periodontal disease, caries, and orthodontic disorders. Our results showed that women living in villages consuming a mostly agricultural diet exhibited more caries and periodontal disease than those living in the bush consuming a mostly wild-food diet. Furthermore, men living in the bush consuming mostly a wild-food diet had more than those living in the village consuming a mostly agricultural diet. These findings are explained by the high incidence of maize consumption in village settings, along with previously recognized variation in rate of caries between men and women. The unexpected discovery of high caries incidences for men in the bush is likely explained by heavy reliance on honey, and perhaps differential access to tobacco and marijuana. These data support the notions that mechanisms of cariogenesis are multifactorial and that the relationships between oral health and the shift from a predominantly wild-food diet to one dominated by cultigens are nuanced.

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Section: Methodssupporting

confidence: 91%

Oral health in transition: The Hadza foragers of Tanzania

Crittenden¹,

Sorrentino²,

Moonie³

et al. 2017

PLoS ONE

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“…The most protruded upper lip was found in male and female from the Xikrin‐Kaiapó tribe, while the less prominent upper lip was found in Assurini female and Arara‐Laranjal male; the same pattern was found for the lower lip in the female group. These findings confirm the highest prevalence of biprotrusion in the Arara‐Iriri and Xikrin‐Kaiapó populations and the lowest prevalence of biprotrusion in the Assurini and Arara‐Laranjal groups .…”

Section: Discussionsupporting

confidence: 77%

Facial biometry of Amazon indigenous people of the Xingu River – Perspectives on genetic and environmental contributions to variation in human facial morphology

Barbosa

Vieira

Mendes

et al. 2016

Orthod Craniofacial Res

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“…It is a consensus among the authors that all malocclusion has a multifactorial etiology, including genetic and environmental factors, with high prevalence in the general population. 2,3,21 Epigenetics stands out as one of the most studied current branches, demonstrating that gene expression can be influenced by environmental factors. 5,15,22 Several studies have also been carried out on pairs of monozygotic and dizygotic twins in order to demonstrate the contribution of genetics to the development of dentition and occlusion.…”

Section: Discussionmentioning

confidence: 99%

Genetic and epigenetic aspects related to malocclusion–report of cases of monozygotic twins

Carvalho

Damasceno

Couto

et al. 2019

BJHR

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Introduction: The multifactorial etiology of malocclusion involves several factors such as genetic, epigenetic and environmental factors. Among various dental anomalies, the development of supernumerary teeth is also directly related to genetic factors and mesiodens is the most frequent type of anomaly. Case Report: Two monozygotic twin sisters, both of which presented mesiodens, but only one with associated anterior open bite. Supernumerary removal was performed in the two sisters, and the anterior open bite was treated with the use of a fixed palatine grid. Results: The case was finished with proper occlusion and intercuspidation, contemplating facial and dental esthetics. Conclusion: Observing the possible differences that occur in pairs of monozygotic twins, it can be concluded that the development of malocclusions is associated with an interaction between genetic, epigenetic and environmental factors. Thus, the diagnosis and treatment of malocclusion should be individualized for each patient.

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Occlusal and facial features in Amazon indigenous: An insight into the role of genetics and environment in the etiology dental malocclusion

Cited by 16 publications

References 37 publications

Oral health in transition: The Hadza foragers of Tanzania

Oral health in transition: The Hadza foragers of Tanzania

Facial biometry of Amazon indigenous people of the Xingu River – Perspectives on genetic and environmental contributions to variation in human facial morphology

Genetic and epigenetic aspects related to malocclusion–report of cases of monozygotic twins

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