Prevalence of taurodontism in individuals in Northwest China determined by cone-beam computed tomography images

Li, Yujiao; Qian, Fei; Wang, Dan; Wang, Yirong; Wang, Wei; Tian, Yu

doi:10.1016/j.heliyon.2023.e15531

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…The TI was related to the height of the top and bottom of the pulp chamber; therefore, it was had been significantly reduced with aging. Many studies on the incidence of taurodontism have adopted the Shifman and chanannel method, some of which selected adolescents as research objects and obtained relatively accurate results [ 5 , 13 ], while others targeted at different age groups, including middle-aged and elderly people [ 7 , 14 ]. It was obviously inappropriate to adopt this method, which would lead to an underestimation of the incidence.…”

Section: Discussionmentioning

confidence: 99%

“…Two statistical studies on the incidence of taurodontism in the Chinese population produced very different results. Da et al found that the incidence of taurodontism was as high as 52.4% [ 6 ]; however, Li et al calculated the incidence of taurodontism in premolars and molars was only 29.14%, and both study populations were approximately 30 years old [ 7 ]. The two methods used to calculate the taurodontism index were different.…”

Section: Discussionmentioning

confidence: 99%

“…Approximately a decade later, Seow and Lai used the crown-body/root (CB/R) ratio as an indicator of taurodontism [4]. These two methods have been used in most studies [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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

Da,

Zhang,

Chai

et al. 2024

PLoS ONE

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Objective The two commonly used diagnostic methods for taurodontism are susceptible to aging changes, mastication wear and other factors. Therefore, this study proposed an improved diagnostic method for taurodontism, and compared it with the previous two methods as a supplement for taurodontism diagnosis. Methods The included patients were aged 10–89 years and admitted to the Department of Stomatology of Hebei Eye Hospital from June 1, 2022 to May 31, 2023. Eighty cone-beam computed tomography images were divided equally into 4 groups: 10–29, 30–49, 50–69, and 70–89 years old. The right mandibular first molars were selected as measurement objects. Firstly, |BD| and taurodontism index (TI)-related parameters were measured using Shifman and Chanannel’s method and crown-body(CB) and root (R) lengths was measured by Seow and Lai’s method. The improved method used the length from the cementoenamel junction(CEJ) to the root bifurcation point(body, B)and the root length(root, R)as the measurement objects. Finally, TI, CB/R ratios, and B/R ratios were calculated according to the formulas given below. One-way ANOVA analysis was mainly used to compare the differences in the values, indices and ratios of taurodontism among different age groups (p<0.05). Results With the increase of age, |BD| and TI values decreased significantly (p<0.01). The CB/R ratios of 70–89 years group were significantly lower than those of the other three groups (p<0.01). Ratios derived from the improved method were significantly lower in the 70–89 years than in 10–29 years group (p<0.05). Conclusions The |BD| and TI parameters proposed by Shifman and channel are significantly influenced by age. The measurements of Seow and Lai (CB/R ratios) were less affected by age compared with those of the former. The improved method(B/R ratios) was least affected by age, which would reduce error and bias in the measurement of taurodontism and obtain more objective results in older patients.

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