Micro-CT Evaluation of Taurodontism in a Deciduous Molar and a Permanent Molar: Case Reports

Year 2019, Volume: 22 Issue: 4, 486 - 490, 29.12.2019

Burcu Nihan Yüksel Kaan Orhan Firdevs Tulga Öz

https://doi.org/10.7126/cumudj.646189

Cited By: 1

Abstract

Taurodontism
is a morphological anomaly of teeth characterized with large pulp
chambers and apically displaced pulpal floor. 
The aim of this case report was to make a comparative evaluation
by panoramic radiographies and 3D
examinations to locate pulp chamber and root canal morphology of a primary mandibular first molar and the
adaptation of root canal filling material of a permanent mandibular first
molar, both diagnosed with taurodontism. In Case-1, a mandibular primary
first molar was extracted due to physiological root resorption seen in the
panoramic radiograph. The micro-CT (Bruker, SkyScan 1174, Belgium) examined the
distance of the tooth a (distance between the lowest and the top point of the
pulp chamber) and b (distance between the lowest point of the pulp chamber and
the apical). The tooth was classified as mesotaurodont by the value of 52.91
obtained with the formula a/b x 100. In Case-2, the tooth was extracted because
of the large periapical radiolucency observed in the radiography taken from the
tooth which was admitted for pain and percussion tenderness. The calculation
for subgroup could not be performed due to loss of the “a” value because of the
cavity preparation. Although the root canal filling on the radiograph was found
to be sufficient and long enough, an empty extra canal and insufficient wall
adaptation of root canal filling were detected by micro-CT. Despite the fact
that taurodontism can be diagnosed by 2D measurements, it is obvious that a 3-dimensional
examination is necessary to obtain decisive data about the root canal cavity
morphology especially for endodontic treatment and also to define prevalence
and subgroups of anomalies. Although micro-CT is seen as a method that provides
more detailed images, it is thought that it should be developed and supported
with clinical studies in order to be valid and easy to use in clinical practice.

Keywords

Taurodontism, Microcomputed tomography, Primary Tooth, Permanent Tooth

References

• Jafarzadeh H, Azarpazhooh A, Mayhall JT. Taurodontism: A review of the condition and endodontic treatment challenges. Int Endod J 2008;41:375-88.
• Blumberg, JE, Hylander WL, Goepp RA. Taurodontism: A biometric study. Am J Phys Anthropol 1971;34:243–255.
• Topçuoğlu, HS, Karataş E, Arslan H, Koseoglu M, Evcil MS. The frequency of taurodontism in the Turkish population. J Clin Exp Dent 2011;3:e284-288.
• Karadaş M, Akdağ MS. Prevalence of taurodontism and its association with tooth agenesis in a Turkish subpopulation. Indian J Oral Sci 2015;6:128-132.
• Şimşek H, Bayrakdar IS, Yaşa Y, Cantekin K. Prevalence of taurodont primary teeth in Turkish children. OHDM 2015;14:23-26.
• Rao A, Arathi R. Taurodontism of deciduous and permanent molars: Report of two cases. J Indian Soc Pedod Prev Dent 2006;24:42-44.
• Surendar MN, Pandey RK, Khanna R. Bilateral taurodontism in primary dentition with hypodontia. BMJ Case Reports 2013 (2013): bcr2012008259.
• Bafna Y, Kambalimath HV, Khandelwal Vl, Nayak P. Taurodontism in deciduous molars. BMJ Case Reports 2013(2013): bcr2013010079
• Shifman A, Chanannel I. Prevalence of taurodontism found in radiographic dental examination of 1,200 young adult Israeli patients. Community Dent Oral Epidemiol 1978;6:200-203.
• Hegde V, Anegundi RT, Pravinchandra KR. Biometric Analysis-A Reliable Indicator for Diagnosing Taurodontism using Panoramic Radiographs. J Clin Diagn Res 2013;7:1779-1781.
• Amano M, Agematsu H, Abe S, Usami A, Matsunaga S, Suto K, Ide Y. Three-dimensional analysis of pulp chambers in maxillary second deciduous molars. J Dent 2006;34:503-508.
• Orhan AI, Orhan K, Özgul BM, Öz FT. Analysis of pulp chamber of primary maxillary second molars using 3D micro-CT system: An in vitro study. Eur J Paediatr Dent 2015;16:305-310.
• Shaw JCM. Taurodont teeth in South African races. Journal of Anatomy 1928;6:476-498.
• Dineshshankar J, Sivakumar M, Balasubramanium AM, Kesavan G, Karthikeyan M, Prasad VS. Taurodontism. J Pharm Bioallied Sci 2014;6:13-15.
• Marques-da-Silva B, Baratto-Filho F, Abuabara A, Moura P, Losso EM, Moro A. Multiple taurodontism: The challenge of endodontic treatment. J Oral Sci 2010;52:653-658.