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Paddenberg E, Dees A, Proff P, Kirschneck C. Individual dental and skeletal age assessment according to Demirjian and Baccetti: Updated norm values for Central-European patients. J Orofac Orthop 2024; 85:199-212. [PMID: 36239773 PMCID: PMC11035409 DOI: 10.1007/s00056-022-00431-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 08/16/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE Chronological age often differs from dental and skeletal age. With orthopantomograms and lateral cephalograms, dental and skeletal development can be determined according to the methods published by Demirjian et al. and Baccetti et al. However, gender and skeletal class as possible confounders were frequently not considered and available norm values are not up-to-date. This retrospective cross-sectional study thus aimed to evaluate effects of skeletal class and gender on dental and skeletal age of growing patients and to generate updated norm values for contemporary Central-European patients. METHODS A total of 551 patients were included in the dental and 733 in the skeletal age assessment, respectively. Dental analysis was based on tooth mineralisation stages in orthopantomograms (Demirjian) and skeletal age was defined by cervical vertebrae maturation stages (CVMS) in lateral cephalograms (Baccetti). Skeletal class was determined by the individualised ANB angle of Panagiotidis/Witt. With nonlinear regression analysis a formula for determining dental age was established. Effects of gender and skeletal class were evaluated and updated norm values generated. RESULTS Inter- and intrarater reliability tests revealed at least substantial measurement concordance for tooth mineralisation and CVMS. Demirjian stages and CVMS significantly depended on gender with girls developing earlier. Skeletal class significantly affected skeletal age only, but without clinical relevance. Updated norm values for dental age differed significantly from the original values of Demirjian and the values for skeletal age differed from those published by Baccetti. CONCLUSION Optimised norms, separated by gender, increase precision in determining individual dental and skeletal age during orthodontic treatment planning. Further studies analysing the effect of skeletal class on dental and skeletal development are needed.
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Affiliation(s)
- Eva Paddenberg
- Department of Orthodontics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Germany.
| | - Adrian Dees
- Department of Orthodontics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Germany
| | - Peter Proff
- Department of Orthodontics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Germany
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Chowdhry A, Kapoor P, Bhargava D, Bagga DK, Mehta A. Comparison of Demirjian's comprehensive chart with the London atlas of tooth development in children and adolescents: a pilot study. Forensic Sci Res 2023; 8:332-337. [PMID: 38405622 PMCID: PMC10894060 DOI: 10.1093/fsr/owad044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 09/10/2023] [Accepted: 12/06/2023] [Indexed: 02/27/2024] Open
Abstract
Dental age estimation has its application in various subdisciplines of medicine and dentistry. New methods of dental age (DA) estimation are emerging and it is important that we compare different methods to determine which one is more closely related to the chronological age. Demirjian's method is one of the most widely used techniques and has been tested in various ethnic populations globally. In 2016, another approach to DA estimation is the London atlas of human tooth development and eruption. No study has compared Demirjian's comprehensive chart and London atlas method in the Indian population. Hence, in the current study, we estimated DA using Demirjian's comprehensive chart and London atlas method for association with the known chronologic age in children and adolescent population. The study also attempted to determine if sexual dimorphism existed in DA estimated by the two methods. Estimation was performed for both methods on 100 orthopantomogram records (50 males and 50 females, aged 6-16 years) of orthodontic patients. The data were compared and analysed using paired t-tests. There was an overestimation of DA by Demirjian's comprehensive chart on an average of +1.3 years in males and +0.5 years in females, whereas using London atlas, it was +1.4 years in males and +0.5 years in females. The mean of underestimation was -0.6 years in males and -0.8 years in females using Demirjian's comprehensive chart, whereas it was -0.8 years in males and -0.5 years in females. A statistically significant difference (P < 0.0001) was found when mean chronological age (11.6 ± 2.6) years of the participants was compared with DA estimated using either Demirjian's comprehensive chart (12.3 ± 2.8) years or London atlas (11.8 ± 2.9) years. The trends in this pilot study point towards more accuracy of London atlas over Demirjian's method when done using comprehensive chart for estimating DA. In summary, the results of the current pilot study indicates greater accuracy of London atlas method over Demirjian's comprehensive chart method for estimating DA in Indian population. This finding should be validated by conducting similar studies using larger sample, on diverse Indian ethnic populations, for applicability in pedodontic, orthodontic, and forensic domains. Key points No study has compared Demirjian's comprehensive chart and London atlas method in the Indian population.The dental age estimated by London method was closer to chronological age as compared to Demirjian's method in our study sample.Significant difference was found in chronological age and estimated age using London atlas method in both males and females.
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Affiliation(s)
- Aman Chowdhry
- Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Priyanka Kapoor
- Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Deepak Bhargava
- School of Dental Sciences, Sharda University, Greater Noida, India
| | | | - Abhishek Mehta
- Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
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Shi L, Yu L, Fan F, Lu T, Lin Y, Cheng Z, Zheng Y, Deng Z. Multi-regional age estimation study in Han Chinese children: validation of modified Tibetan method and comparative analysis between regions and ethnicities. AUST J FORENSIC SCI 2023. [DOI: 10.1080/00450618.2023.2177346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Lei Shi
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Beijing China
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Liang Yu
- School /Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou, PR China
| | - Fei Fan
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Ting Lu
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Yushan Lin
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Ziqi Cheng
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Yuanna Zheng
- School /Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou, PR China
| | - Zhenhua Deng
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Beijing China
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, PR China
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The Application of the Cameriere's Methodologies for Dental Age Estimation in a Select KwaZulu-Natal Population of South Africa. Dent J (Basel) 2022; 10:dj10070130. [PMID: 35877404 PMCID: PMC9318630 DOI: 10.3390/dj10070130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/25/2022] Open
Abstract
Background: The estimation of an individual’s age is a fundamental component of forensic odontology. Literary reports found that the efficiency of Cameriere methodology for age estimation varied among many population groups. Therefore, this study aimed to determine the applicability of the Cameriere methods to a select South African population of the KwaZulu-Natal (KZN) province. Materials and Methods: This cross-sectional retrospective study was conducted on 840 digital panoramic radiographs that met the inclusion criteria. Dental maturity was determined through the morphometric analysis of the seven left permanent mandibular and maxillary teeth in accordance with Cameriere et al. (2006). Moreover, the dental age was also calculated using the South African Black Bayesian formulae of the Cameriere method by Angelakopoulos et al. (2019). The paired sample t-test or Wilcoxon’s signed rank test assessed the significant difference between the chronological age and estimated dental age for the various formulae. A p-value < 0.05 was considered to be statistically significant. Results: The Cameriere et al. (2006) Italian formula and the South African Black Bayesian formulae of the Cameriere method by Angelakopoulos et al. (2019) underestimated and overestimated age in the South African Black and Indian population groups of the KZN province, respectively. Therefore, the authors generated a novel population-specific regression formulae (including and excluding third molars) using “step-wise regression analysis” and a “best-fit model” for the South African Black and Indian population groups of KZN. Conclusion: This study recommends that the population-specific formulae generated in this study be utilized in the KZN population to improve the accuracy of dental age estimation within this region.
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Briem Stamm AD, Cariego MT, Vazquez DJ, Pujol MH, Saiegh J, Bielli MV, Hetch P, Carosi MJ, Cabirta ML. Use of the Demirjian method to estimate dental age in panoramic radiographs of patients treated at the Buenos Aires University School of Dentistry. ACTA ODONTOLOGICA LATINOAMERICANA : AOL 2022; 35:25-30. [PMID: 35700538 DOI: 10.54589/aol.35/1/25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 12/01/2021] [Indexed: 06/15/2023]
Abstract
The aim of this study was to determine the difference between real age (RA) and dental age (DA) in boys and girls from the Autonomous City of Buenos Aires (C.A.B.A.) by analyzing digital panoramic radiographs from the database of the Imaging Department at the Buenos Aires University School of Dentistry, using the Demirjian Method (DM). The sample consisted of 508 panoramic radiographs of 6- to 14-year old Argentines (268 female and 240 male). The Demirjian method was used to estimate dental age from each panoramic radiograph, and the Wilcoxon test was applied to perform a comparative analysis with the real age recorded in the image database. Average RA was 9.36 years (SD 2.11), and average DA according to the Demirjian method was 10.45 years (SD 2.31). For females, RA was 9.25 (SD 2.12), and DA according to the DM was 10.40 years (SD 2.41). For males, RA was 9.46 (SD 2.10), and DA according to the DM was 10.50 years (SD 2.22). An inter-classcorrelationcoefficient(ICC) calculated as a correlation measure between dental age and real age was ICC = 1.09%. The ICC was 1.04% for the males and 1.15% for females. Significant differences were found between DA and RA (p<0.01) in general and according to sex. Real age was found to be lower than dental age in the study population from Buenos Aires City.
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Affiliation(s)
- Alan D Briem Stamm
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Odontología Legal con Historia de la Odontología. Buenos Aires, Argentina
| | - Maria T Cariego
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Odontología Legal con Historia de la Odontología. Buenos Aires, Argentina
| | - Diego J Vazquez
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
| | - Martin H Pujol
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
| | - Jonathan Saiegh
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
| | - Maria V Bielli
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
| | - Pedro Hetch
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
| | - Maria J Carosi
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina.
| | - Maria L Cabirta
- Universidad de Buenos Aires. Facultad de Odontología. Cátedra de Diagnóstico por Imágenes. Buenos Aires, Argentina
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Moca AE, Ciavoi G, Todor BI, Negruțiu BM, Cuc EA, Dima R, Moca RT, Vaida LL. Validity of the Demirjian Method for Dental Age Estimation in Romanian Children. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9040567. [PMID: 35455611 PMCID: PMC9033145 DOI: 10.3390/children9040567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/08/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022]
Abstract
Dental age assessment is useful in various medical fields. The Demirjian method for dental age estimation is one of the most widely used in the field of pediatric dentistry. The aim of this study was to verify the accuracy of the Demirjian method in determining age in a sample of girls and boys from Oradea, Romania. This retrospective and radiographic study was based on the evaluation of 1006 panoramic radiographs, belonging to 1006 patients (431 boys and 575 girls) with ages between 3 and 13.9 years from the city of Oradea, Romania. They were collected from three private dental practices from Oradea and were analyzed between 1 September 2021, and 10 November 2021. The patients were distributed into 11 age groups, each group spanning over one year (e.g., 3−3.9, 4−4.9). For the assessment of dental age, the Demirjian method was used, which is based on the evaluation of the developmental stages of the lower left permanent teeth. The mean chronological age of the patients was 9.496 ± 2.218 years, and the mean dental age was 10.934 ± 2.585 years. The overestimation of dental age was obtained in all age groups for the entire sample. As such, dental age was higher than chronological age, with values varying from 0.34 years in the 3−3.9 years age group to 1.7 years in the 10−10.9 years age group. In girls, dental age was higher than chronological age, with values varying from 0.46 years in the 3−3.9 years age group to 1.73 years in the 11−11.9 years age group, while in boys, the values varied from 0.15 years in the first age group to 2.02 years in the 10−10.9 years age group. The comparison of the differences between chronological age and dental age according to the gender of the patients revealed that the distribution of the differences was nonparametric in both groups according to the Shapiro−Wilk test (p < 0.05). The differences between the groups were not significant according to the Mann−Whitney U test. However, larger differences were identified for boys (1.46 years) than girls (1.417 years), with an overestimation of the dental age. The Demirjian method overestimated the age of the children included in the investigated sample, with different values for the different age groups investigated, and requires adaptations.
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Affiliation(s)
- Abel Emanuel Moca
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
| | - Gabriela Ciavoi
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
- Correspondence: (G.C.); (B.I.T.)
| | - Bianca Ioana Todor
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
- Correspondence: (G.C.); (B.I.T.)
| | - Bianca Maria Negruțiu
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
| | - Emilia Albinița Cuc
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
| | - Raluca Dima
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
| | - Rahela Tabita Moca
- Doctoral School of Biomedical Sciences, University of Oradea, 1 Universității Street, 410087 Oradea, Romania;
| | - Luminița Ligia Vaida
- Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, 10 Piața 1 Decembrie Street, 410073 Oradea, Romania; (A.E.M.); (B.M.N.); (E.A.C.); (R.D.); (L.L.V.)
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Shi L, Zhou Y, Lu T, Fan F, Zhu L, Suo Y, Chen Y, Deng Z. Dental age estimation of Tibetan children and adolescents: Comparison of Demirjian, Willems methods and a newly modified Demirjian method. Leg Med (Tokyo) 2022; 55:102013. [PMID: 34999531 DOI: 10.1016/j.legalmed.2022.102013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/28/2021] [Accepted: 01/02/2022] [Indexed: 11/27/2022]
Abstract
Tibetan ethnic group is one of the oldest ethnic groups in China and South Asia. This study set out to analyze the dental development and validate Demirjian method and Willems method in estimating dental age of Tibetan children and adolescents, and to modify Demirjian method based on Tibetan population to provide ethnic-specific reference data and a more reliable method for forensic age assessment in Tibetan ethnic group. In this study, 1951 samples aged between 4 and 15 years were retrospectively collected and analyzed. Multiple linear regression was used to establish relationship between chronological age (CA) and developmental stages of left mandibular permanent teeth. The accuracy of the modified method was tested and compared with that of Demirjian and Willems method. Results showed that dental maturity score (DMS) was significantly greater in girls than in boys in all age groups except for the 4-year age group (p < 0.05). Mean absolute error (MAE) was 0.96 years for both boys and girls by Demirjian method, and 1.06 and 1.16 years for boys and girls respectively by Willems method. Adjusted scores table was established and tested. The age of boys was overestimated by 0.13 years and the age of girls was underestimated by 0.06 years by the adjusted scores table. MAE was lower than that of the other two methods. In conclusion, Demirjian method and Willems method was not sufficiently accurate in estimating dental age of Tibetan population. The modified method was more suitable for dental age estimation of Tibetan population than Demirjian and Willems method.
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Affiliation(s)
- Lei Shi
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Yuchi Zhou
- Criminal Investigation Department of Sichuan Provincial Public Security Bureau, Chengdu, Sichuan 610015, PR China
| | - Ting Lu
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Fei Fan
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Lin Zhu
- Department of Stomatology, People's Hospital of Tibet Autonomous Region, Tibet Autonomous Region, Lhasa 540000, PR China
| | - Yang Suo
- Department of Stomatology, People's Hospital of Tibet Autonomous Region, Tibet Autonomous Region, Lhasa 540000, PR China
| | - Yijiu Chen
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China; Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Ministry of Justice, 1347# West Guangfu Road, Shanghai 200063, PR China.
| | - Zhenhua Deng
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China.
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Oz E. Dental age estimation using three different methods in monozygotic and dizygotic twins. AUST J FORENSIC SCI 2021. [DOI: 10.1080/00450618.2021.2005143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Esra Oz
- Department of Pediatric Dentistry, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey
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Sezer B, Çarıkçıoğlu B. Accuracy of the London Atlas, Haavikko's Method and Cameriere's European Formula of dental age estimation in Turkish children. Leg Med (Tokyo) 2021; 54:101991. [PMID: 34784498 DOI: 10.1016/j.legalmed.2021.101991] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/04/2021] [Accepted: 11/07/2021] [Indexed: 11/19/2022]
Abstract
Age estimation is a mandatory procedure when the chronological age is unknown or uncertain. Dental development is the preferred characteristic for estimating a child's age. There are many methods for dental age estimation, but their reliability can differ between populations. This study compared the accuracy of three of these methods-the London Atlas (LA), Haavikko's method (HM), and Cameriere's European formula (CF)-in Turkish children living in northwestern Turkey. Panoramic radiographs of 980 children from northwestern Turkey aged between 6.00 and 14.99 years were examined for the whole study group and separately for different ages and sexes by all three methods. Statistical differences between chronological age and dental age were tested using the paired sample t-test and the Wilcoxon signed-rank test. The LA, HM, and CF accuracies were determined based on the mean absolute error. Spearman's rank correlation coefficient showed that the correlation between chronological age and dental age for both sexes was linear for all methods. The LA overestimated the chronological age by 0.09 years, while HM and CF underestimated it by 0.49 and 0.11 years, respectively. The difference between dental age and chronological age was significant in all samples, for all methods, except for the LA in boys. When boys, girls, and the total sample were evaluated, values with the lowest mean absolute error were obtained by HM and were statistically significant in all three groups. Therefore, HM is more accurate than the LA and CF for dental age estimation in Turkish children living in northwestern Turkey.
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Affiliation(s)
- Berkant Sezer
- Department of Pediatric Dentistry, School of Dentistry, Çanakkale Onsekiz Mart University, 17100 Kepez, Çanakkale, Turkey.
| | - Burak Çarıkçıoğlu
- Department of Pediatric Dentistry, School of Dentistry, Çanakkale Onsekiz Mart University, 17100 Kepez, Çanakkale, Turkey
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Naik S, Rajadhyaksha N, Ghule KD. Evaluating the accuracy of two different age estimation methods in growing children in Navi Mumbai using Orthopantomograph: A radiographic study. J Indian Soc Pedod Prev Dent 2021; 39:363-368. [PMID: 35102958 DOI: 10.4103/jisppd.jisppd_227_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Age estimation through dental maturity indicators is relatively more accurate, reliable, and valid for living as well as dead individuals. It acts as an important tool in diagnosis and treatment planning in clinical as well as in forensic dentistry. There are various methods to estimate the dental age. Out of which, Demirjian's method has been widely used in various populations. However, there is a dearth of literature on Indian population comparing Demirjian's method to Cameriere's method. AIM The purpose of this study was to evaluate the accuracy of Demirjian's and Cameriere's age estimation methods to chronological age in growing children using orthopantomograph (OPG). SETTING AND DESIGN The sample consisted of digital OPGs of 280 children in Navi Mumbai aged 5-16 years. MATERIALS AND METHODS Digital OPGs were used to assess the dental maturity of seven mandibular left teeth using Demirjian and Cameriere's method and were compared to the chronological age. STATISTICAL ANALYSIS USED Data were analyzed using Student's t tests. RESULT Irrespective of gender, dental age estimated by Cameriere's method (mean 10.23 ± 2.79 years), underestimated the chronological age (mean 11.74 ± 2.86 years) for overall population which showed statistically significant difference. Demirjian's method overestimated (mean 12.24 ± 3.06 years) the chronological age for the overall population but was statistically insignificant. CONCLUSION Demirjian's method is more closely in correlation with the chronological age of growing children as compared to the Cameriere method when applied to children of age 5-16 years in Navi Mumbai.
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Affiliation(s)
- Shilpa Naik
- Department of Pedodontics and Preventive Dentistry, DY Patil University School of Dentistry, Navi Mumbai, Maharashtra, India
| | - Nithi Rajadhyaksha
- Department of Pedodontics and Preventive Dentistry, DY Patil University School of Dentistry, Navi Mumbai, Maharashtra, India
| | - Kiran Dattatray Ghule
- Department of Pedodontics and Preventive Dentistry, DY Patil University School of Dentistry, Navi Mumbai, Maharashtra, India
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KASIMOĞLU Y, BEKTAŞ İ, ÇİL T, ÇENE E, TUNA E, ÖZCAN İ. Türk Çocuklarında İki Yöntem ile Diş Yaşı Tayininin Birbiri ile Karşılaştırılması. KOCAELI ÜNIVERSITESI SAĞLIK BILIMLERI DERGISI 2021. [DOI: 10.30934/kusbed.679429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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12
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Yang Z, Wen D, Xiao J, Liu Q, Sun S, Kureshi A, Chang Y, Zha L. Application of Cameriere's method for dental age estimation in children in South China. Forensic Sci Res 2021; 7:106-114. [PMID: 35784412 PMCID: PMC9246020 DOI: 10.1080/20961790.2020.1830515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to evaluate the applicability of Cameriere’s European formula for age estimation in children in South China and to adapt the formula to establish a more suitable formula for these children. Moreover, the performance of dental age estimation based on Cameriere’s method combining the developmental information of permanent teeth (PT) and third molar (TM) was also analysed. Orthopantomographs of 720 healthy children in Group A, and orthopantomographs of 320 children and 280 subadults in Group B were assessed. The samples of Group A were divided into training dataset 1 and test dataset 1, and the samples of Group B were also divided into training dataset 2 and test dataset 2. A South China-specific formula was established based on the training dataset 1, and the comparison of accuracy between the Cameriere’s European formula and the South China-specific formula was conducted with the test dataset 1. Additionally, a PT regression model, a TM regression model, and a combined regression model (PT + TM) were established based on the training dataset 2, and the performance of these three models were validated on the test dataset 2. The Cameriere’s European formula underestimated chronological age with a mean difference (ME) of −0.47 ± 1.11 years in males and −0.69 ± 1.19 years in females. However, the South China-specific formula underestimated chronological age, with a mean difference (ME) of −0.02 ± 0.71 years in males and −0.14 ± 0.73 years in females. Compared with PT model and TM model, the PT and TM combined model obtained the smallest root mean square error (RMSE) of 1.29 years in males and 0.93 years in females. In conclusion, the South China-specific formula was more suitable for assessing the dental age of children in South China, and the PT and TM combined model can improve the accuracy of dental age estimation in children.Key points Orthopantomographs of 720 healthy children in Group A, and orthopantomographs of 320 children and 280 subadults in Group B were assessed. A South China-specific formula was established based on the training dataset 1, and the comparison of accuracy between the Cameriere’s European formula and the South China-specific formula was conducted with the test dataset 1. A PT regression model, a TM regression model, and a combined regression model (PT + TM) were established based on the training dataset 2, and the performance of these three models were validated on the test dataset 2. The South China-specific formula was more suitable for assessing the dental age of children in South China, and the PT and TM combined model can improve the accuracy of dental age estimation in children.
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Affiliation(s)
- Zedeng Yang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Dan Wen
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Jiao Xiao
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Qianying Liu
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Shule Sun
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | | | - Yunfeng Chang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Lagabaiyila Zha
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China.,Xinjiang Medical University, Urumqi, China
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Evaluation of the Willems and Cameriere’s dental age estimation methods in Turkish children–A modified version of Cameriere’s method. FORENSIC SCIENCE INTERNATIONAL: REPORTS 2020. [DOI: 10.1016/j.fsir.2020.100105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Wang J, Wang M, Shen S, Guo Y, Fan L, Ji F, Tao J. Testing the nonlinear equations for dental age evaluation in a population of eastern China. Leg Med (Tokyo) 2020; 48:101793. [PMID: 33051142 DOI: 10.1016/j.legalmed.2020.101793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/14/2020] [Accepted: 10/04/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The study evaluated the validity of the nonlinear equations (Qingdao model) for dental age assessment in an eastern Chinese population. MATERIALS AND METHODS We studied 1073 digital panoramic radiographs of children aged 11-16 years from a Chinese Han population. Dental ages (DAs) were calculated using the Demirjian and the new model methods. Statistical significance was set at p < 0.05. For each method, differences between the chronological age (CA) and dental age were analyzed by paired t-tests and mean absolute error (MAE). RESULTS The discrepancies between CA and DA determined by Qingdao model were 0.18 and 0.30 years for males and females, respectively. While using Demirjian method, these differences were and 0.46 and 0.30. The Qingdao model's MAEs between DA and CA were 1.23 and 0.90 years in males and females, respectively. As for the Demirjian method, MAEs were 1.43 and 0.86 years in males and females. CONCLUSIONS This study showed that the new nonlinear equations were more accurate than the traditional Demirjian method. Especially, the new nonlinear Qingdao model is more competitive in 11-14-year male groups and 15-16-year female groups. We recommend a combined Qingdao model and Demirjian method may reasonably reflect the CAs among children in the eastern Chinese population.
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Affiliation(s)
- Jian Wang
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Miaochen Wang
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shihui Shen
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Ying Guo
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Linfeng Fan
- Department of Oral Radiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Fang Ji
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
| | - Jiang Tao
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
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Jayaraman J, Wong HM, Roberts GJ, King NM, Cardoso HFV, Velusamy P, Vergara RG, Yanagita KI, Jorns TP. Age estimation in three distinct east Asian population groups using southern Han Chinese dental reference dataset. BMC Oral Health 2019; 19:242. [PMID: 31711475 PMCID: PMC6849234 DOI: 10.1186/s12903-019-0942-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 10/30/2019] [Indexed: 11/22/2022] Open
Abstract
Background Dental age estimation can assist in the identification of victims following natural disasters and it can also help to solve birth date disputes in individuals involved in criminal activities. A reference dataset (RDS) has been developed from the dental development of 2306 subjects of southern Han Chinese origin and subsequently validated. This study aimed to test the applicability of the southern Han Chinese dental maturation RDS on three distinct East Asian population groups. Methods A total of 953 dental panoramic radiographs of subjects aged 2 to 24 years were obtained from Philippines, Thailand and Japan. The staging of dental development was conducted according to Anglo-Canadian classification system. The dental age (DA) was calculated using six methods; one un-weighted average and five weighted average (n-tds, sd-tds, se-tds, 1/sd-tds, 1/se-tds) methods based on the scores of the southern Han Chinese RDS. Statistical significance was set at p < 0.05 and the variation between chronological age (CA) and DA was evaluated using paired t-test and Bland & Altman scatter plots. Results From six dental age calculations, all methods of DA accurately estimated the age of Japanese and few methods in Filipino subjects (n-tds, 1/sd-tds, 1/se-tds). There was consistent overestimation of age for all the methods for Thai females (p < 0.05). Conclusions The southern Han Chinese dental reference dataset was shown to be most accurate for Japanese, followed by Thai males and it was particularly ineffective for Filipinos and Thai females.
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Affiliation(s)
- Jayakumar Jayaraman
- Department of Developmental Dentistry, University of Texas Health School of Dentistry, Texas, USA
| | - Hai Ming Wong
- Paediatric Dentistry & Orthodontics, Faculty of Dentistry, The University of Hong Kong, 2/F Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong, Hong Kong.
| | - Graham J Roberts
- Department of Orthodontics, King's College London Dental Institute, London, UK
| | - Nigel M King
- Oral Development and Behavioural Sciences, Faculty of Health and Medical Sciences, University of Western Australia, Nedlands, Australia
| | - Hugo F V Cardoso
- Department of Archaeology, Simon Fraser University, Burnaby, BC, Canada
| | - Pavethynath Velusamy
- Department of Orthodontic Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ronaldo G Vergara
- Section of Orthodontics, Graduate School of Dentistry, University of the East, Manila, Philippines
| | | | - Teekayu P Jorns
- Orofacial Pain Unit, Department of Oral Biology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
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Application of comprehensive chart for dental age estimation (DAEcc) based on demirjian method using orthopantograms: A pilot study. FORENSIC SCIENCE INTERNATIONAL: REPORTS 2019. [DOI: 10.1016/j.fsir.2019.100017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Mohanty I, Panda S, Dalai RP, Mohanty N. Predictive accuracy of Demirjian's, Modified Demirjian's and India specific dental age estimation methods in Odisha (Eastern Indian) population. THE JOURNAL OF FORENSIC ODONTO-STOMATOLOGY 2019; 37:32-39. [PMID: 31187741 PMCID: PMC6875246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study is aimed at finding the predictive accuracy of Demirjian's (D), modified Demirjian's (MD) and India specific age estimation methods (AA) Indian specific age estimation methods in 522 healthy children of Odisha population among 3-18 years. Correlations between chronological age (CA) and derived age (DA) by above mentioned methods were evaluated by Wilcoxon signed rank test and Pearson's correlation analysis. Analysis of mean absolute error concluded that D and MD predicted the CA with fair accuracy, whereas, AA had lower accuracy in Odisha children. Odisha specific polynomial regression formula, derived in this study is showing a strong correlation with CA (r=0.84). Comparison of mean absolute error of D, MD, AA and Odisha specific method indicated a better predictive accuracy of Odisha specific method.
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Affiliation(s)
- I Mohanty
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha 'O' Anusandhan University, Odisha, India
| | - S Panda
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha 'O' Anusandhan University, Odisha, India
| | - R P Dalai
- Department of Community Dentistry, Institute of Dental Sciences, Siksha 'O' Anusandhan University, Odisha, India
| | - N Mohanty
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha 'O' Anusandhan University, Odisha, India
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Applicability of Demirjian's method for dental age estimation in a group of Egyptian children. BDJ Open 2019; 5:2. [PMID: 30911408 PMCID: PMC6430778 DOI: 10.1038/s41405-019-0015-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 11/22/2022] Open
Abstract
Aims The aims of this study were to evaluate the applicability of Demirjian’s method for dental age assessment in a group of Egyptian children in Minia city and to develop an age predictive equation suitable for the studied group. Subjects and methods In this retrospective, blind, cross-sectional study, 160 dental panoramic radiographs (DPTs) were selected from 420 DPTs from healthy children aged between three and 10 years old from the archived medical files of patients attending Minia University Dental Hospital (MUDH) and evaluated to estimate dental ages. Results Age was overestimated for almost all of the studied subjects with an accuracy range from 0.18 to 1.19 years for males and from 0.08 to 0.87 years for females, with the exception of two age subgroups (9–10-year-old males and 10–11-year-old females, for which the mean difference values were −0.06 and −0.008 years, respectively). A Logistic regression was used to generate a suggested formula for dental age estimation. Conclusions Demirjian’s method may be unsuitable for Egyptian children living in Minia city. Development of a predication equation and the introduction of adaptable conversion tables to transform the maturity score into a dental age for Egyptian children may be suitable alternatives. The validity of the newly developed prediction equation must be tested among all Egyptian children.
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Günen Yılmaz S, Harorlı A, Kılıç M, Bayrakdar İŞ. Evaluation of the relationship between the Demirjian and Nolla methods and the pubertal growth spurt stage predicted by skeletal maturation indicators in Turkish children aged 10-15: investigation study. Acta Odontol Scand 2019; 77:107-113. [PMID: 30345847 DOI: 10.1080/00016357.2018.1510137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the possibility of evaluating the relationship between dental maturation and skeletal maturation without taking a hand-wrist radiogram outside of panoramic radiogram. MATERIALS AND METHODS Panoramic and hand-wrist radiographs of 717 patients (383 girls and 334 boys), with ages ranging from 10 to 15 years, were evaluated. Dental maturity stages of the mandibular canine, first premolar, second premolar and second molar teeth were determined by Demirjian's and Nolla's methods. The skeletal maturation was determined by Fishman method and bone age was determined through the Greulich and Pyle method. RESULTS All teeth showed positive and statistically significant correlations, the highest correlation was between the mandibular second premolar calcification stages and hand-wrist maturation stages. According to both dental age determination methods, mandibular second premolar was prominent in determining to the pubertal growth stages. CONCLUSIONS There was a positive relationship between dental calcification stages and skeletal maturation stages, in the study population. Dental calcification stages of the second mandibular premolar showed the highest positive correlation with the skeletal maturation stages.
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Affiliation(s)
- Sevcihan Günen Yılmaz
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Abubekir Harorlı
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Münevver Kılıç
- Department of Pedodontics, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - İbrahim Şevki Bayrakdar
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Eskisehir Osmangazi University, Eskisehir, Turkey
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Accuracy of the Demirjian and Willems methods of dental age estimation for children from central southern China. Int J Legal Med 2018; 133:593-601. [PMID: 30206691 DOI: 10.1007/s00414-018-1924-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/22/2018] [Indexed: 10/28/2022]
Abstract
The aim of this study was to compare the accuracy of the Demirjian method and the Demirjian method as revised by Willems for age estimation based on orthopantomograms from central southern Chinese Han population aged 8-16 years. Discrepancies between chronological and estimated ages were statistically evaluated by analyzing 1249 orthopantomograms from 603 girls and 646 boys. Using the Demirjian method, the mean age estimates underestimated chronological age by 0.03 years (p = 0.48) for girls and overestimated it by 0.03 years (p = 0.59) for boys; these differences with respect to chronological age were not statistically significant. In contrast, the Willems method underestimated chronological age by 0.54 years (p < 0.01) for girls and 0.44 years (p < 0.01) for boys; these differences with respect to chronological age were statistically significant. Compared to the Demirjian method, the overall mean absolute error generated using the Willems method was slightly higher (0.85 and 0.86 years, respectively). Since the Demirjian method was more accurate, we highly recommend that it should be applied when estimating dental age in the Chinese Han population. Further modifications of these two methods for populations from other regions and additional studies of other age groups are warranted.
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Ozveren N, Serindere G. Comparison of the applicability of Demirjian and Willems methods for dental age estimation in children from the Thrace region, Turkey. Forensic Sci Int 2018; 285:38-43. [DOI: 10.1016/j.forsciint.2018.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 12/26/2017] [Accepted: 01/22/2018] [Indexed: 11/29/2022]
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Dental Age Estimation in Southern Turkish Children: Comparison of Demirjian and Willems Methods. IRANIAN JOURNAL OF PEDIATRICS 2017. [DOI: 10.5812/ijp.11726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Al-Dharrab AA, Al-Sulaimani FF, Bamashmous MS, Baeshen HA, Zawawi KH. Radiographic evaluation of dental age maturity in 3-17-years-old saudi children as an indicator of chronological age. J Orthod Sci 2017; 6:47-53. [PMID: 28546957 PMCID: PMC5433104 DOI: 10.4103/jos.jos_1_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE: This study was aimed to evaluate the dental age in Saudi children from panoramic radiographs using the Demirjian method to estimate their chronological age. MATERIALS AND METHODS: This retrospective cross-sectional study consisted of 1902 panoramic radiographs of 955 boys and 947 girls between the ages of 3–17 years. All children were placed in the age group closest to their chronological age. The dental age was scored on all seven left mandibular teeth by calibrated examiners. Bivariate analyses using the t-test and Pearson correlation were performed. RESULTS: There was significant difference in both boys and girls in all the age groups between their chronological age and dental age. Even though there was a slight overestimation in boys in some age groups and slight underestimation in girls in some groups, correlation analysis showed that there was a highly significant correlation between the chronological age and dental age for both boys (r2 = 0.96, P < 0.001) and girls (r2 = 0.98, P < 0.001). Moreover, correlation analyses for each age group showed a significant correlation between the chronological age and the dental age, using the Demirjian method, in most age groups (P < 0.01). When comparing the maturation score between boys and girls, the Student's t-test showed that there were no statistical differences between boys and girls in most age groups. CONCLUSION: Saudi boys and girls living in the western region of Saudi Arabia exhibited similar pattern of dental development when compared to the Demirjian method. Hence, the Demirjian method could be used as reference in children from the western region of Saudi Arabia.
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Affiliation(s)
- Ayman A Al-Dharrab
- Department Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Fahad F Al-Sulaimani
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohamed S Bamashmous
- Department of Dental Public Health, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hosam A Baeshen
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khalid H Zawawi
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
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Melo M, Ata-Ali J. Accuracy of the estimation of dental age in comparison with chronological age in a Spanish sample of 2641 living subjects using the Demirjian and Nolla methods. Forensic Sci Int 2016; 270:276.e1-276.e7. [PMID: 28029496 DOI: 10.1016/j.forsciint.2016.10.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 07/26/2016] [Accepted: 10/03/2016] [Indexed: 11/28/2022]
Abstract
Age estimation is an important procedure in forensic medicine and is carried out for a number of reasons. For living persons, age estimation is performed in order to assess whether a child has attained the age of criminal responsibility, in scenarios involving rape, kidnapping or marriage, in premature births, adoption procedures, illegal immigration, pediatric endocrine diseases and orthodontic malocclusion, as well as in circumstances in which the birth certificate is not available or the records are suspect. According to data from the UNHCR (United Nations High Commissioner for Refugees), the number of people seeking refugee status continued to increase in the last years, driven by the wars in Syria and Iraq, as well as by conflict and instability in Afghanistan, Eritrea and elsewhere. The objective of this study is to compare the accuracy of estimating dental age versus chronological age using the Nolla and Demirjian methods in a Spanish population. A final sample of 2641 panoramic X-rays corresponding to Spanish patients (1322 males and 1319 females) between 7-21 years of age was analyzed. Dental age was assessed using the Nolla and Demirjian methods, establishing comparisons with mean chronological age based on the Student t-test for paired samples, followed by the generation of a linear regression model. Both methods showed slight discrepancy between dental and chronological age. On examining the reproducibility of the Nolla and Demirjian methods, technical errors of 0.84% and 0.62%, respectively, were observed. On average, the Nolla method was found to estimate an age 0.213years younger than the chronological age, while the Demirjian method estimated an age 0.853years older than the chronological age. Linear combination of the mean Nolla and Demirjian estimates increased the predictive capacity to 99.2%. In conclusion the Nolla and Demirjian methods were found to be accurate in estimating chronological age from dental age in a Spanish population. The error was found to be greater in males than in females, and involved an over-estimation of age with the Demirjian method and under-estimation of age with the Nolla method. Combination of the Nolla and Demirjian methods for estimating chronological age from dental age affords a predictive capacity of over 99%, and is fast and easy to perform, and inexpensive.
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Affiliation(s)
| | - Javier Ata-Ali
- Public Dental Health Service, Arnau de Vilanova Hospital, Valencia, Spain; Department of Dentistry, European University of Valencia, Valencia, Spain.
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Dardouri AAK, Cameriere R, De Luca S, Vanin S. Third molar maturity index by measurements of open apices in a Libyan sample of living subjects. Forensic Sci Int 2016; 267:230.e1-230.e6. [DOI: 10.1016/j.forsciint.2016.07.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 06/13/2016] [Accepted: 07/21/2016] [Indexed: 10/21/2022]
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Secular trend in the maturation of permanent teeth in a sample of Turkish children over the past 30 years. Forensic Sci Int 2016; 259:155-60. [PMID: 26773225 DOI: 10.1016/j.forsciint.2015.12.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 11/15/2015] [Accepted: 12/02/2015] [Indexed: 11/22/2022]
Abstract
This study was performed to evaluate the influence of secular trends on dental maturation among Turkish children over the past 30 years. Orthopantomograms of 757 (385 boys, 372 girls) Turkish children born in the 1980s, 1990s, and 2000s were evaluated. Three groups were formed based on decade with five subgroups by age from 9 to 13 years old for each gender. The number of samples in each age group and gender were matched. The mandibular left seven permanent teeth were evaluated based on formation stage to determine the overall dental maturity score. The groups were compared based on decade and gender. The Bonferroni-corrected Mann-Whitney U test and Kruskal-Wallis tests were used for statistical evaluation. Among 11-, 12-, and 13-year-olds born in the 2000s, girls exhibited significantly more mature dentition than did boys (p<0.01, p<0.05, and p<0.05, respectively). Twelve-year-old girls born in the 1990s and 2000s exhibited significantly more mature dentition than did girls born in the 1980s (p<0.01). Girls generally exhibited more mature dentition than boys. No significant positive secular trends in dental maturity were observed from the 1980s through the 2000s. Dental maturation among Turkish children was not affected by a secular trend.
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Onat Altan H, Altan A, Bilgiç F, Akıncı Sözer Ö, Damlar İ. The applicability of Willems' method for age estimation in southern Turkish children: A preliminary study. J Forensic Leg Med 2015; 38:24-7. [PMID: 26698388 DOI: 10.1016/j.jflm.2015.11.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 11/13/2015] [Accepted: 11/16/2015] [Indexed: 10/22/2022]
Abstract
The aims of the present study were to evaluate the applicability and accuracy of Willems' method for assessing southern Turkish children and to analyze the practicability of this method in different age groups for both genders. Panoramic radiographs of 756 children (378 females, 378 males) aged between 5 and 14.99 years were examined by one observer. This retrospective study involved a contemporary southern Turkish population. The chronological ages of the subjects were divided into 10 groups. These 10 groups consisted of children of the following ages 5 and 14.99. Relationships between continuous variables were examined using Pearson's correlation coefficient. The paired t-test was used to compare all data according to gender and age groups. A p-value of less than 0.05 was considered significant for all statistical data. According to the results, a very high correlation was found for both girls (r(2) = 0.946) and for boys (r(2) = 0.940). Dental age (DA) and chronological age (CA) were consistent for girls in the four age groups (5-5.99, 6-6.99, 12-12.99, and 14-14.99) and for boys in the three age groups (5-5.99,13-13.99, 14-14.99). The maturity score of Willems' Belgian samples of the DA was applicable to seven groups of the southern Turkish children. The present study reports that Willems' method is more accurate for girls than for boys.
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Affiliation(s)
- Halenur Onat Altan
- Department of Pediatric Dentistry, Faculty of Dentistry, Gaziosmanpasa University, Tokat, Turkey
| | - Ahmet Altan
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gaziosmanpasa University, Tokat, Turkey.
| | - Fundagül Bilgiç
- Faculty of Dentistry, Mustafa Kemal University, Hatay, Turkey
| | | | - İbrahim Damlar
- Faculty of Dentistry, Mustafa Kemal University, Hatay, Turkey
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Trevino-Tijerina MC, Valenzuela-Garach DA, Elizondo-Pereo RA, Cerda-Flores RM, Vargas-Villarreal J, González-Salazar F. Age estimation of teenagers from Monterrey (Mexico) by the evaluation of dental mineralization after multi-slice helical computed tomography. AUST J FORENSIC SCI 2015. [DOI: 10.1080/00450618.2015.1034777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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