Income trajectories affect treatment of dental caries from childhood to young adulthood: a birth cohort study
Abstract
We aimed to analyze the effects of family income trajectories on the increase in dental caries from childhood to young adulthood. Data from the 1993 Pelotas (Brazil) birth cohort study, in which dental caries was measured at ages 6, 12, and 18 years, were analyzed. Family income of 302 participants was assessed at birth, and at 4, 11, 15, and 18 years of age. Mother's education, toothbrushing frequency, dental visiting, dental caries in primary dentition, and birth weight were covariates. A latent class growth analysis was conducted to characterize trajectories of time-varying variables. The influence of income trajectories on the increase in dental caries from age 6 to age 18 was evaluated by a generalized linear mixed model. After adjustment, the increases in numbers of decayed and missing teeth (DMT) from age 6 to age 18 were associated with family income trajectory. The incident rate ratios (IRR) of DMT compared with the group of stable high incomes were 2.36 for stable low incomes, 1.71 for downward, and 1.64 for upward. The IRR of teeth being filled in stable low-income groups compared with stable high-income groups was 0.55. Family income mobility affected treatment patterns of dental caries. Differences across income trajectory groups were found in the components of dental caries indices rather than in the experience of disease.
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BibTeX
@article{peres2026income,
title = {{Income trajectories affect treatment of dental caries from childhood to young adulthood: a birth cohort study}},
author = {Marco Aurelio Peres and Pingzhou Liu and Flavio Fernando Demarco and Alexandre Emidio Ribeiro Silva and Fernando Cesar Wehrmeister and Ana Maria Menezes and Karen Glazer Peres},
journal = {Brazilian Oral Research},
year = {2026},
month = oct,
doi = {10.1590/1807-3107bor-2018.vol32.0036},
url = {https://hal.science/hal-05791982v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Income trajectories affect treatment of dental caries from childhood to young adulthood: a birth cohort study
AU - Marco Aurelio Peres
AU - Pingzhou Liu
AU - Flavio Fernando Demarco
AU - Alexandre Emidio Ribeiro Silva
AU - Fernando Cesar Wehrmeister
AU - Ana Maria Menezes
AU - Karen Glazer Peres
PY - 2026
DA - 2026/10/11
JO - Brazilian Oral Research
DO - 10.1590/1807-3107bor-2018.vol32.0036
UR - https://hal.science/hal-05791982v1
AB - We aimed to analyze the effects of family income trajectories on the increase in dental caries from childhood to young adulthood. Data from the 1993 Pelotas (Brazil) birth cohort study, in which dental caries was measured at ages 6, 12, and 18 years, were analyzed. Family income of 302 participants was assessed at birth, and at 4, 11, 15, and 18 years of age. Mother's education, toothbrushing frequency, dental visiting, dental caries in primary dentition, and birth weight were covariates. A latent class growth analysis was conducted to characterize trajectories of time-varying variables. The influence of income trajectories on the increase in dental caries from age 6 to age 18 was evaluated by a generalized linear mixed model. After adjustment, the increases in numbers of decayed and missing teeth (DMT) from age 6 to age 18 were associated with family income trajectory. The incident rate ratios (IRR) of DMT compared with the group of stable high incomes were 2.36 for stable low incomes, 1.71 for downward, and 1.64 for upward. The IRR of teeth being filled in stable low-income groups compared with stable high-income groups was 0.55. Family income mobility affected treatment patterns of dental caries. Differences across income trajectory groups were found in the components of dental caries indices rather than in the experience of disease.
SN - 1806-8324
ER -