Prevalence and microscopic features of enamel pearls from permanent human molars

Authors

  • Estela Kaminagakura UNESP-University Estadual Paulista
  • Cristiane Ribeiro Salmon University of Campinas
  • Douglas Campideli Fonseca University Center of Lavras
  • Maria Cândida Almeida Lopes Federal University of Piauí

DOI:

https://doi.org/10.20396/bjos.v10i4.8641613

Keywords:

Microscopy, Electron, Scanning, Enamel, Tooth abnormalities

Abstract

Enamel pearls are ectopic structures observed mainly on the roots of permanent teeth and could be related to periodontal diseases. Aim: To evaluate the prevalence of enamel pearls in extracted human molars and characterize their structures using light and scanning electron microscopy. Methods: The study comprised 2,201 extracted human permanent molars. The teeth were analyzed and classified according to morphological features. The presence, location and shape of enamel pearls were investigated. Fifteen human molars with enamel pearls were embedded in acrylic resin and observed by light microscopy. Results: Seventy-one enamel earls were
identified on third molar root. Microscopically, most pearls were composed of prismatic irregular enamel and normal dentin. The dentinoenamel junction presented an irregular course. The number of dentinal tubules was normal and they presented curvature to continue within the root dentin of the carrier tooth. Dentinal tubules below the enamel pearls were closer to each other. Conclusions: scanning electron microscopic analysis revealed that the enamel pearls were similar to coronal enamel.

Enamel pearls are ectopic structures observed mainly on the roots of permanent teeth and could be related to periodontal diseases. Aim: To evaluate the prevalence of enamel pearls in extracted human molars and characterize their structures using light and scanning electron microscopy. Methods: The study comprised 2,201 extracted human permanent molars. The teeth were analyzed and classified according to morphological features. The presence, location and shape of enamel pearls were investigated. Fifteen human molars with enamel pearls were embedded in acrylic resin and observed by light microscopy. Results: Seventy-one enamel earls were
identified on third molar root. Microscopically, most pearls were composed of prismatic irregular enamel and normal dentin. The dentinoenamel junction presented an irregular course. The number of dentinal tubules was normal and they presented curvature to continue within the root dentin of the carrier tooth. Dentinal tubules below the enamel pearls were closer to each other. Conclusions: scanning electron microscopic analysis revealed that the enamel pearls were similar to coronal enamel.

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Author Biographies

Estela Kaminagakura, UNESP-University Estadual Paulista

Professor of Stomatology, São José dos Campos Dental School, UNESP-University Estadual Paulista

Cristiane Ribeiro Salmon, University of Campinas

PhD, Bucco-dental Biology Area, Piracicaba Dental School, University of Campinas

Douglas Campideli Fonseca, University Center of Lavras

Professor of Clinical Periodontology, Dental School, University Center of Lavras

Maria Cândida Almeida Lopes, Federal University of Piauí

Professor of Oral Surgery, Federal University of Piauí

Published

2015-11-05

How to Cite

1.
Kaminagakura E, Salmon CR, Fonseca DC, Lopes MCA. Prevalence and microscopic features of enamel pearls from permanent human molars. Braz. J. Oral Sci. [Internet]. 2015 Nov. 5 [cited 2022 Dec. 8];10(4):268-71. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641613

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