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Case Report
Differential diagnosis, three-dimensional imaging aspects and interceptive orthodontic management of molar–incisor malformation
1 Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
2 Department of Pathology and Oral Diagnosis, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
3 Department of Orthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
Address correspondence to:
Laura Guimarães Primo
Faculdade de Odontologia da UFRJ, Departamento de Odontopediatria, Rua Professor Rodolpho Paulo Rocco, 325, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-617,
Brazil
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Article ID: 101099Z01FV2020
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Vieira FGF, Pintor AVB, Abrahão AC, Ruellas ACO, Visconti MA, Primo LG. Differential diagnosis, three-dimensional imaging aspects and interceptive orthodontic management of molar– incisor malformation. Int J Case Rep Images 2020;11:101099Z01FV2020.ABSTRACT
Introduction: Molar–incisor malformation is a condition described in 2014, with few reports in the literature and characterized by atypical root formation in incisors and first permanent molars.
Case Report: We report a case of an 8-year-old patient with central incisors and upper and lower first permanent molars with short roots and open apexes, situation not compatible with the chronological age. The patient was evaluated clinically, radiographically, and by blood tests. Anatomopathological analyses of a primary tooth were performed. Computed tomography (CT) was used to evaluate root development of first permanent molars and incisors and compare, by superimposition, the radicular aspect of affected with unaffected teeth of a control patient of the same sex and age. Clinically, the patient presented tongue-thrust habit, central incisors with premature contact and abnormal mobility, and enamel hypoplasia at teeth #8 and #24. Imaging exams showed teeth #3, #8, #9, #14, #19, #24, #25, and #30 with short roots and open apexes. One year follow-up CT images evidenced absence of root development of these teeth and thin roots walls, especially at the incisors. Interceptive orthodontic treatment with fixed palatal crib was performed.
Conclusion: This report showed the importance of early diagnosis and treatment of molar–incisor malformation patients.
Keywords: Dentition, Molar, Oral, Pathology, Permanent, Tooth abnormalities, Tooth diseases
SUPPORTING INFORMATION
Acknowledgments
This work was supported in part by scholarships from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES), Finance Code 001—and Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro—Brasil (FAPERJ) process number E-26/202.399/2017.
Author ContributionsFernanda Gabriela de Fátima Vieira - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Andréa Vaz Braga Pintor - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Aline Corrêa Abrahão - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Antônio Carlos de Oliveira Ruellas - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Maria Augusta Visconti - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Laura Guimarães Primo - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Guarantor of SubmissionThe corresponding author is the guarantor of submission.
Source of SupportNone
Consent StatementWritten informed consent was obtained from the patient for publication of this article.
Data AvailabilityAll relevant data are within the paper and its Supporting Information files.
Conflict of InterestAuthors declare no conflict of interest.
Copyright© 2020 Fernanda Gabriela de Fátima Vieira et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.
