Skin color affect the replacement of amalgam for composite in posterior restorations: a birth-cohort study
Abstract
The aim of present study was to estimate the occurrence and associated factors for replacement of amalgam posterior restorations. A representative sample of all 5,914 births from the 1982 in Pelotas birth cohort study was prospectively investigated, and the posterior restorations were assessed at 24 (n = 720) and 31 years of age (n = 539). Individual-level variables, i.e., demographic characteristics, socio-economic factors, oral health conditions and use of dental services, were collected from different waves of the cohort. Tooth-level variables included dental group, estimated time in mouth of each amalgam restoration, and number of restored dental surfaces. Thus, 246 individuals presented 718 amalgam restorations at 24 years of age. After 7 seven years of follow-up, 18.9% of these restorations had been replaced with composite resins. Multilevel Poisson regression models showed that, compared to white individuals, blacks presented a lower risk of replacement of amalgam restorations for composite resins (IRR - 0.39 [0.16-0.95]). Individuals with high educational level at age 31 showed an increased likelihood of replacement of amalgam restorations. Therefore, skin color affects the replacement of amalgam for composite resin in posterior restorations.
Related
- Fall of amalgam restoration: a 10-year analysis of an Australian university dental clinic
- Cyanogenic clovers invest more in rhizobia but do not affect rhizobium evolution
- Density-Dependence and agricultural intensity affect host-parasite-parasitoid interactions in a bird-insect trophic system
- Luffa Rootstocks Affect Fruit Quality of Grafted White-Fruited Bitter Melon
- Controlled-release fertilizer programs differentially affect leaf nutrition and nutrient factor productivity in mature HLB-affected ‘Valencia’ sweet orange trees in Florida
BibTeX
@article{chisini2026skin,
title = {{Skin color affect the replacement of amalgam for composite in posterior restorations: a birth-cohort study}},
author = {Luiz Alexandre Chisini and Kauê Collares and João Luiz Dorneles Bastos and Karen Glazer Peres and Marco de Anselmo Peres and Bernardo Lessa Horta and Flávio Fernando Demarco and Marcos Britto Correa},
journal = {Brazilian Oral Research},
year = {2026},
month = oct,
doi = {10.1590/1807-3107bor-2019.vol33.0054},
url = {https://hal.science/hal-05791979v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Skin color affect the replacement of amalgam for composite in posterior restorations: a birth-cohort study
AU - Luiz Alexandre Chisini
AU - Kauê Collares
AU - João Luiz Dorneles Bastos
AU - Karen Glazer Peres
AU - Marco de Anselmo Peres
AU - Bernardo Lessa Horta
AU - Flávio Fernando Demarco
AU - Marcos Britto Correa
PY - 2026
DA - 2026/10/11
JO - Brazilian Oral Research
DO - 10.1590/1807-3107bor-2019.vol33.0054
UR - https://hal.science/hal-05791979v1
AB - The aim of present study was to estimate the occurrence and associated factors for replacement of amalgam posterior restorations. A representative sample of all 5,914 births from the 1982 in Pelotas birth cohort study was prospectively investigated, and the posterior restorations were assessed at 24 (n = 720) and 31 years of age (n = 539). Individual-level variables, i.e., demographic characteristics, socio-economic factors, oral health conditions and use of dental services, were collected from different waves of the cohort. Tooth-level variables included dental group, estimated time in mouth of each amalgam restoration, and number of restored dental surfaces. Thus, 246 individuals presented 718 amalgam restorations at 24 years of age. After 7 seven years of follow-up, 18.9% of these restorations had been replaced with composite resins. Multilevel Poisson regression models showed that, compared to white individuals, blacks presented a lower risk of replacement of amalgam restorations for composite resins (IRR - 0.39 [0.16-0.95]). Individuals with high educational level at age 31 showed an increased likelihood of replacement of amalgam restorations. Therefore, skin color affects the replacement of amalgam for composite resin in posterior restorations.
SN - 1806-8324
ER -