Applicability and accuracy of Demirjian and Willems methods in a population of Eastern Chinese subadults

Wang, Jian; Bai, Xuebing; Wang, Miaochen; Zhou, Zijie; Bian, Xiaohe; Qiu, Che; Chang-yi, LI; Yang, Zhao; Chen, Guangcan; Ji, Fang; Tao, Junli

doi:10.1016/j.forsciint.2018.09.006

Cited by 31 publications

(29 citation statements)

References 28 publications

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“…The Chinese population 33–35 was evaluated in three studies showing contrasting results. In Wang et al, 33 based on eastern Chinese subadult, and in Yue Zhai et al., 34 based on the northern Chinese population, Demirjian’s method was more reliable and accurate than Willems’. On the other hand, according to Yue et al.…”

Section: Discussionmentioning

confidence: 99%

Dental age estimation: Demirjian’s versus the other methods in different populations. A literature review

et al. 2021

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Age estimation is an important issue in forensic anthropology and odontology, since it is applied to both the living and the dead. Studies have shown that assessing tooth development using radiological methods is a reliable way to estimate age, especially in children. Demirjian’s method is the most widely used estimation method for dental age evaluation. Over the years, many methods have been developed in order to asses which one predicts more accurately the age. In the literature, many populations were examined with these different methods and discordant results are described. This review aims to evaluate the studies in which Demirjian’s method was compared with Willems’, Cameriere’s, Nolla’s, Smith’s, Haavikko’s and Chaillet’s methods in order to estimate the most accurate dental age estimation method in different populations. Using the methodology described in the Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement, the authors conducted a review of existing literature using three databases: PubMed, Google Scholar and Google Scopus.

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Section: Discussionmentioning

confidence: 99%

Dental age estimation: Demirjian’s versus the other methods in different populations. A literature review

et al. 2021

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“…Despite the development of different scales and methods, the Demirjian's scale is still considered to be one of most reliable bases for estimating DA in Caucasian children [16]. However, it has been found that in some populations, the scale tends to overestimate DA in relation to the chronological maturity of the child [17,18]. In addition, differences in DA have been found in various populations and these have been attributed to differences in the timing of their overall maturation; for example, a study population of Hong Kong residents were found to be more advanced overall in dental development compared with a British Caucasian population, by an average of 5 months [19].…”

Section: Discussionmentioning

confidence: 99%

The Broad Variability in Dental Age Observed among Childhood Survivors Is Cancer Specific

et al. 2021

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Purpose The study aimed to assess the differences in dental maturation between childhood cancer survivors and healthy children. Materials and Methods Fifty-nine cancer patients including 16 (27.1%) girls and 43 (72.8%) boys, aged between 4 and 16 years, underwent dental and radiographic examinations. The mean duration of anticancer therapy was 16.8 months (range, 1 to 47 months), and 4.6 years (range, 8 to 123 months) had passed since the termination of disease. The control group consisted of 177 panoramic radiographs of age- and sex-matched healthy individuals. Dental age (DA) was estimated with Demirjian’s scale and delta age, i.e., DA–chronological age (CA), was used to compare groups. Results The DA of cancer survivors was accelerated by almost 1 year compared to their CA (9.9±3.1 vs. 8.9±2.8, p=0.040). The greatest difference was observed among patients with brain tumor: delta (DA–CA) was 2.2±1.1 years. Among all cancer patients, only children with familial adenomatous polyposis (FAP)-associated hepatoblastoma (HP) demonstrated delayed DA, with regard to both other cancer survivors (p=0.011) and healthy patients (p=0.037). All four patients with HP suffered from FAP, and three of them had documented adenomatous polyposis coli ( APC ) genes mutation. The DA of cancer patients having teeth with short roots was significantly greater than that of the cancer survivors without this anomaly (12.8±3.2 vs. 9.0±2.4, p < 0.001). Conclusion DA in children may be altered by cancer disease.

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“…Ye et al [28] selected 941 orthopantomograms of 7-14-year-old children from Eastern China and found that the Willems's method was more accurate in estimating the dental age than the Demirjian's method [28]. For the 11-18-year-olds from Eastern China, the Demirjian's method was more reliable compared to the Willems's method according to Wang et al [26]. They conclude that the Demirjian's method was unsatisfactory for 11-18-year-olds from Eastern China [26].…”

Section: Introductionmentioning

confidence: 99%

Age estimation for children and young adults by volumetric analysis of upper anterior teeth using cone-beam computed tomography data

et al. 2020

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Background:The aim of this study was to investigate the association between chronological age and the pulp/tooth volume ratio (PTR) of specific teeth using cone-beam computed tomography (CBCT) enhanced with Materialise-Mimics Research software 21.0 in children and young adult population from Eastern China. Materials and methods: CBCT scans of 230 patients (119 males, 111 females), aged 8.18-19.92 years were analysed by two well-trained examiners in this retrospective study. The intraclass correlation coefficient value was calculated to test the intra-and inter-examiner agreement. The volumetric analysis of the pulp and calcified tissues was performed on the maxillary left central incisors and canines. The correlation and regression analyses were then performed. Results: The Pearson correlation analysis showed a strong coefficient of correlation (r) for maxillary left canines (-0.81 for girls and -0.88 for boys) as compared to central incisors (-0.63 for girls and -0.70 for boys). Regarding performance, the canine model was more powerful than the central incisor model. The derived regression equation from maxillary left canines had high coefficients of × PTR, R 2 = 0.69). Conclusions: Our study proved that the PTR value of canines had a negative correlation relationship with a subadult's chronological age and volumetric analysis of CBCT scans using the software may become an efficient method to estimate the chronological age of children and young adults.

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Applicability and accuracy of Demirjian and Willems methods in a population of Eastern Chinese subadults

Cited by 31 publications

References 28 publications

Dental age estimation: Demirjian’s versus the other methods in different populations. A literature review

Dental age estimation: Demirjian’s versus the other methods in different populations. A literature review

The Broad Variability in Dental Age Observed among Childhood Survivors Is Cancer Specific

Age estimation for children and young adults by volumetric analysis of upper anterior teeth using cone-beam computed tomography data

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