High Prevalence of Taurodontism in North China and Its Relevant Factors: a Retrospective Cohort Study

Overview

Journal Oral Radiol

Specialty Radiology

Date 2022 Jun 30

PMID 35771318

Authors

Yunmeng Da

Chao Wang

Le Zhang

Fuyin Wang

Haoxuan Sun

Xiaolan Ma

Xuliang Ma

Rui Li

Zhiyin Zhang

Dongzhen Li

Jing Jia

Affiliations

Soon will be listed here.

Abstract

Objective: The purpose of this study was to investigate the prevalence and relevant factors of taurodontism in North China.

Methods: We retrospectively analysed the cone beam computed tomography (CBCT) of 1025 patients (496 male and 529 female) aged between 10 and 59 years. The crown-body/root (CB/R) ratios of the maxillary and mandibular molars were measured. The prevalence of hypotaurodontism, mesotaurodontism, and hypertaurodontism was then calculated and the incidence of taurodontism along with its relevant factors, was evaluated.

Results: The overall rate of taurodontism in North China was as high as 78.9%. If the third molars (opsigenes) were excluded, which have a big morphological variation from each other, the rate was 52.4%. The mean CB/R ratio of taurodontism differs from tooth position: maxillary mandibular third molars > maxillary third molars > maxillary second molars > maxillary first molars > mandibular second molars > mandibular first molars (P < 0.05). In addition, the 1025 patients were divided into different age groups, and it was found that the mean CB/R ratio decreased with age (P < 0.05). Moreover, the CB/R ratio of the mandibular first and second molars in female patients was higher than males (P < 0.05).

Conclusion: This study revealed that taurodontism is widely prevalent in North China. The incidence of taurodontism increases the closer the tooth is to the back end of the dental arch, and quite a few of the maxillary and mandibular third molars teeth have tapered roots. And the taurodontism is decreased by age, as there were more affected female than male patients.

Citing Articles

Prevalence and root canal morphology of taurodontism analyzed by cone-beam computed tomography in Northern China.

Li S, Min Z, Wang T, Hou B, Su Z, Zhang C BMC Oral Health. 2025; 25(1):5.

PMID: 39748390 PMC: 11697681. DOI: 10.1186/s12903-024-05294-3.

An improved diagnostic method for taurodontism and a comparative study on its effectiveness evaluation.

Da Y, Zhang L, Chai Z, Du H, Hao L, Zhang L PLoS One. 2024; 19(5):e0302810.

PMID: 38713685 PMC: 11075821. DOI: 10.1371/journal.pone.0302810.

CBCT imaging and root canal treatment for taurodontism in mandibular second molar - A case report and literature review.

Tian X, Qiao J, Guo N, Liu K, Li K J Radiol Case Rep. 2024; 17(11):1-7.

PMID: 38638554 PMC: 11022752. DOI: 10.3941/jrcr.v17i11.5212.

References

Keith A . Problems relating to the Teeth of the Earlier Forms of Prehistoric Man. Proc R Soc Med. 2009; 6(Odontol Sect):103-24. PMC: 2005996. View

Shaw J . Taurodont Teeth in South African Races. J Anat. 1928; 62(Pt 4):476-498.1. PMC: 1249989. View

Seow W, Lai P . Association of taurodontism with hypodontia: a controlled study. Pediatr Dent. 1989; 11(3):214-9. View

Gomes R, Habckost C, Junqueira L, Leite A, Figueiredo P, Paula L . Taurodontism in Brazilian patients with tooth agenesis and first and second-degree relatives: a case-control study. Arch Oral Biol. 2012; 57(8):1062-9. DOI: 10.1016/j.archoralbio.2012.04.006. View

Satir S . Determination of mandibular morphology in a TURKISH population with Down syndrome using panoramic radiography. BMC Oral Health. 2019; 19(1):36. PMC: 6390525. DOI: 10.1186/s12903-019-0722-8. View

Cuoghi O, Topolski F, de Faria L, Occhiena C, Ferreira N, Ferlin C . Prevalence of Dental Anomalies in Permanent Dentition of Brazilian Individuals with Down Syndrome. Open Dent J. 2016; 10:469-473. PMC: 5045970. DOI: 10.2174/1874210601610010469. View

Whitehouse L, Smith C, Poulter J, Brown C, Patel A, Lamb T . Novel DLX3 variants in amelogenesis imperfecta with attenuated tricho-dento-osseous syndrome. Oral Dis. 2018; 25(1):182-191. PMC: 6334507. DOI: 10.1111/odi.12955. View

Jain P, Kaul R, Saha S, Sarkar S . Tricho-dento-osseous syndrome and precocious eruption. J Clin Exp Dent. 2017; 9(3):e494-e497. PMC: 5347304. DOI: 10.4317/jced.53348. View

Tomona N, Smith A, Guadagnini J, Hart T . Craniofacial and dental phenotype of Smith-Magenis syndrome. Am J Med Genet A. 2006; 140(23):2556-61. DOI: 10.1002/ajmg.a.31371. View

10.

Andersson E, Axelsson S, Gjolstad L, Storhaug K . Taurodontism: A minor diagnostic criterion in Laurence-Moon/Bardet-Biedl syndromes. Acta Odontol Scand. 2013; 71(6):1671-4. DOI: 10.3109/00016357.2013.794389. View

11.

Weckwerth G, Santos C, Brozoski D, Centurion B, Pagin O, Lauris J . Taurodontism, Root Dilaceration, and Tooth Transposition: A Radiographic Study of a Population With Nonsyndromic Cleft Lip and/or Palate. Cleft Palate Craniofac J. 2015; 53(4):404-12. DOI: 10.1597/14-299. View

12.

Filho M, Santos L, Martelli D, Silveira M, Esteves da Silva M, de Barros L . Taurodontism in patients with nonsyndromic cleft lip and palate in a Brazilian population: a case control evaluation with panoramic radiographs. Oral Surg Oral Med Oral Pathol Oral Radiol. 2015; 120(6):744-50. DOI: 10.1016/j.oooo.2015.08.005. View

13.

Hu J, Simmer J . Developmental biology and genetics of dental malformations. Orthod Craniofac Res. 2007; 10(2):45-52. DOI: 10.1111/j.1601-6343.2007.00384.x. View

14.

Desai V . Oculo-auriculo-vertebral spectrum with radial defects, a bifid condyle and taurodontism: A case report. Dent Med Probl. 2019; 56(4):427-431. DOI: 10.17219/dmp/110234. View

15.

Pena-Cardelles J, Dominguez-Medina D, Cano-Duran J, Ortega-Concepcion D, Cebrian J . Oral manifestations of ellis-van creveld syndrome. A rare case report. J Clin Exp Dent. 2019; 11(3):e290-e295. PMC: 6461737. DOI: 10.4317/jced.55543. View

16.

Dong J, Amor D, Aldred M, Gu T, Escamilla M, Macdougall M . DLX3 mutation associated with autosomal dominant amelogenesis imperfecta with taurodontism. Am J Med Genet A. 2005; 133A(2):138-41. DOI: 10.1002/ajmg.a.30521. View

17.

Wright J, Hong S, Simmons D, Daly B, Uebelhart D, Luder H . DLX3 c.561_562delCT mutation causes attenuated phenotype of tricho-dento-osseous syndrome. Am J Med Genet A. 2008; 146A(3):343-9. DOI: 10.1002/ajmg.a.32132. View

18.

Turan S, Aydin C, Bereket A, Akcay T, Guran T, Yaralioglu B . Identification of a novel dentin matrix protein-1 (DMP-1) mutation and dental anomalies in a kindred with autosomal recessive hypophosphatemia. Bone. 2009; 46(2):402-9. PMC: 2818230. DOI: 10.1016/j.bone.2009.09.016. View

19.

Ye L, Macdougall M, Zhang S, Xie Y, Zhang J, Li Z . Deletion of dentin matrix protein-1 leads to a partial failure of maturation of predentin into dentin, hypomineralization, and expanded cavities of pulp and root canal during postnatal tooth development. J Biol Chem. 2004; 279(18):19141-8. DOI: 10.1074/jbc.M400490200. View

20.

Steele-Perkins G, Butz K, Lyons G, Zeichner-David M, Kim H, Cho M . Essential role for NFI-C/CTF transcription-replication factor in tooth root development. Mol Cell Biol. 2003; 23(3):1075-84. PMC: 140704. DOI: 10.1128/MCB.23.3.1075-1084.2003. View