Wich factors influencing the number of teeth at 12 months of age: a birth cohort study.

Flávio Fernando Demarco,Thiago Machado Ardenghi,Fernando Celso Barros,Mariangela Freitas Silveira,Marina Sousa Azevedo,Ethieli Rodrigues Da Silveira,Mariana Gonzalez Cademartori

doi:10.1590/1807-3107bor-2021.vol35.0059

Flávio Fernando Demarco, Thiago Machado Ardenghi + Show 5 more

Open Access

https://doi.org/10.1590/1807-3107bor-2021.vol35.0059

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Abstract

This study aimed to verify, through a longitudinal follow-up, the pre-, peri- and postnatal factors associated with the eruption of deciduous teeth. The study was nested in a Birth Cohort Study conducted in Pelotas, a Southern Brazilian city. Mothers were followed prenatally and their children were followed-up perinatally, at 3 and 12 months of age. The outcome was the number of teeth at 12 months, and exploratory variables included maternal habits and characteristics, anthropometric measures of children and mothers, and socioeconomic and demographic information. Data were collected through interviews with the mother and children's clinical exam. Poisson regression models were used for the analysis. Participants included 4,014 children with a mean number of erupted teeth at 12 months of 5.50. After adjustments, a lower mean number of teeth was observed in children from non-white mothers, early preterm children, and shorter children at birth and at 12 months. A higher number of teeth was observed for mothers with excessive weight gain during pregnancy, mothers who smoked during pregnancy, weightier children at birth and at 12 months, and for children with larger heads at birth and at 12 months. Our findings suggest that maternal and children characteristics influenced primary tooth eruption.

Highlights

Submitted: May 31, 2020 Accepted for publication: October 22,2 020 Last revision: November 17, 2020Dental eruption is defined as the emergence of teeth from the jaws
This study was nested in the 2015 Pelotas (Brazil) Birth Cohort Study, which is a larger study conducted in Pelotas, a southern Brazilian city
The 2015 Pelotas (Brazil) Birth Cohort is the fourth birth cohort of Pelotas, including all children born in the year 2015 from mothers who lived in the urban area of the city

Summary

Introduction

Dental eruption is defined as the emergence of teeth from the jaws. When the pedicle banding the tooth germ to the dental lamina splits, the eruption process starts, and continues until the tooth reaches the occlusal position within the mouth.[1] Any part of the tooth visible on the gingival surface is considered as the mark point of emergence. This period requires attention from healthcare professionals and can be challenging for parents. The primary tooth eruption pattern could vary greatly and is influenced by a series of different factors.[3]

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