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Breakdown of demarcated opacities related to molar-incisor hypomineralization: a longitudinal study

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Abstract

Objectives

This prospective longitudinal study aimed to evaluate if the occurrence of post-eruptive breakdown of demarcated opacities in hypomineralized teeth is influenced by the color or location of the opacity.

Materials and methods

Patients diagnosed with molar-incisor hypomineralization (MIH) between 2012 and 2014 were eligible. Two calibrated examiners performed the initial and follow-up evaluations according to European Academy of Paediatric Dentistry (EAPD) criteria. Sixty-five patients were included. Fifty-eight (89.2%), with a mean age of 8.8 years (SD: 1.4), were reassessed after 1 year. Two hundred and nine of 1155 tooth surfaces were considered for the study: 86 with white opacity (OP-W), 91 with yellow opacity (OP-Y), and 32 with enamel breakdown (EB).

Results

From the OP-W, OP-Y, and EB, 14, 27.5, and 46.9% worsened to breakdown exposing dentin, atypical restoration, or extraction (DB + RA or EXT), respectively. Yellow opacities tended to be more prone to breakdown than white opacities. The occurrence of EB, DB + AR, or EXT was not influenced by the location (p = 0.25).

Conclusions

The color of the opacity seems to play an important role on the occurrence of fracture and should be considered as a potential predictor.

Clinical relevance

Dentists should be aware that demarcated opacities related to MIH tend to fracture over time. Moreover, children with MIH should be seen at shorter intervals.

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Funding

This study is supported by CAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.

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Authors and Affiliations

  1. Department of Preventive and Community Dentistry, Pediatric Dental Clinic, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 157, Rio de Janeiro, Brazil

    Aline Borburema Neves, Gabriela Caldeira Andrade Americano, Daniella Varela Soares & Vera Mendes Soviero

  2. Dental School, Faculdade Arthur Sá Earp Neto, Petrópolis, Brazil

    Gabriela Caldeira Andrade Americano & Vera Mendes Soviero

Authors
  1. Aline Borburema Neves
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  2. Gabriela Caldeira Andrade Americano
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  3. Daniella Varela Soares
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  4. Vera Mendes Soviero
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Corresponding author

Correspondence to Aline Borburema Neves.

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The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Neves, A.B., Americano, G.C.A., Soares, D.V. et al. Breakdown of demarcated opacities related to molar-incisor hypomineralization: a longitudinal study. Clin Oral Invest 23, 611–615 (2019). https://doi.org/10.1007/s00784-018-2479-x

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  • DOI: https://doi.org/10.1007/s00784-018-2479-x

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