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Dentinal dysplasia type 1: A 3D micro‐computed tomographic study of enamel, dentine and root canal morphology
Author(s) -
Ranjitkar Sarbin,
Yong Robin,
Wu ICheng,
Gully Grant,
Farmer Daniel,
Watson Ian,
Heithersay Geoffrey
Publication year - 2019
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/aej.12359
Subject(s) - dentistry , molar , dentinal tubule , cementum , enamel paint , pulpitis , pulp (tooth) , dentin , root canal , medicine , computed tomographic , dentition , orthodontics , computed tomography , radiology
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 ( DD 1c) 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 DD 1c 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 DD 1c 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.