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Multiple Teeth Fractures in Dentinogenesis Imperfecta: A Case Report

Authors
 B Min  ;  J S Song  ;  J H Lee  ;  B J Choi  ;  K M Kim  ;  S O Kim 
Citation
 JOURNAL OF CLINICAL PEDIATRIC DENTISTRY, Vol.38(4) : 362-365, 2014 
Journal Title
 JOURNAL OF CLINICAL PEDIATRIC DENTISTRY 
ISSN
 1053-4628 
Issue Date
2014
MeSH
Child ; Crystallography ; Dental Enamel/ultrastructure ; Dentin/ultrastructure ; Dentinogenesis Imperfecta/complications* ; Durapatite/chemistry ; Hardness ; Humans ; Male ; Microscopy, Electron, Scanning ; Molar/abnormalities ; Molar/ultrastructure ; Tooth Fractures/etiology*
Keywords
Dentinogenesis imperfecta ; Teeth fractures ; Scanning electron microscope ; Vickers hardness test ; children
Abstract
Dentinogenesis imperfecta (DGI) is a hereditary defect consisting of opalescent teeth composed of irregularly formed and hypomineralized dentin. This paper presents the multiple fractures of DGI-affected teeth and suggests the reason of low fracture resistance by observing the dentin microstructures directly using scanning electron microscope (SEM) and by measuring its surface hardness using the Vickers hardness test. SEM revealed that while the enamel microstructure was similar in the DGI-affected and normal teeth, the microstructure of the DGI-affected dentin was poorly woven and more loosely packed than that of the normal dentin. The Vickers hardness of the DGI-affected dentin was 4.89 times softer than the normal dentin. The low fracture resistance of DGI-affected teeth can be attributed to the poorly woven microstructure of their dentin, which leads to a reduction in hardness
Full Text
http://jocpd.org/doi/abs/10.17796/jcpd.38.4.q523456j733642r2#A1
DOI
10.17796/jcpd.38.4.q523456j733642r2
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Pediatric Dentistry (소아치과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
Kim, Seong Oh(김성오) ORCID logo https://orcid.org/0000-0002-8620-1377
Song, Je Seon(송제선) ORCID logo https://orcid.org/0000-0001-8620-5629
Lee, Jae Ho(이제호) ORCID logo https://orcid.org/0000-0002-1556-3485
Choi, Byung Jai(최병재)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/138688
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