Dentinal dysplasia type 1: A 3D micro-computed tomographic study of enamel, dentine and root canal morphology

Sarbin Ranjitkar, Robin Yong, I. Cheng Wu, Grant Gully, Daniel Farmer, Ian Watson, Geoffrey Heithersay

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Dentine dysplasia type 1 is a rare and complex dental anomaly. Our aim was to conduct a morphometric assessment of a dentinal dysplasia type 1c (DD1c) caries-free mandibular second molar, extracted due to symptomatic apical periodontitis. Controls consisted of five intact mandibular second molars. Micro-computed tomography analysis showed that the DD1c volume % for enamel, dentine/cementum and pulp chamber fell in the 0.36th, 99.97th and 0.09th percentiles of the control teeth (P < 0.01). It also revealed an extremely complicated root canal system in the DD1c tooth with a varying degree of dentine mineralisation and aberrant dentine deposition in the pulp chamber. A crack extending from the external tooth surface to the pulp chamber was identified as a potential site for microbial invasion. Clinical implications include preventive measures and early intervention in reversible pulpitis. Conclusion: Micro-CT imaging can be useful in establishing post-extraction diagnosis of cracks and phenomic characterisation of tooth anomalies.

Original languageEnglish
Pages (from-to)298-304
Number of pages7
JournalAustralian Endodontic Journal
Volume45
Issue number3
DOIs
Publication statusPublished - Dec 2019

Keywords

  • abnormalities
  • classification
  • dentine
  • diagnostic imaging
  • pathology

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