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30.06.2022 | Original Article

High prevalence of taurodontism in North China and its relevant factors: a retrospective cohort study

verfasst von: Yunmeng Da, Chao Wang, Le Zhang, Fuyin Wang, Haoxuan Sun, Xiaolan Ma, Xuliang Ma, Rui Li, Zhiyin Zhang, Dongzhen li, Jing Jia

Erschienen in: Oral Radiology | Ausgabe 2/2023

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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.

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Titel: High prevalence of taurodontism in North China and its relevant factors: a retrospective cohort study
verfasst von: Yunmeng Da
Chao Wang
Le Zhang
Fuyin Wang
Haoxuan Sun
Xiaolan Ma
Xuliang Ma
Rui Li
Zhiyin Zhang
Dongzhen li
Jing Jia
Publikationsdatum: 30.06.2022
Verlag: Springer Nature Singapore
Erschienen in: Oral Radiology / Ausgabe 2/2023
Print ISSN: 0911-6028
Elektronische ISSN: 1613-9674
DOI: https://doi.org/10.1007/s11282-022-00630-1

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High prevalence of taurodontism in North China and its relevant factors: a retrospective cohort study