Accuracy of Demirjian’s four methods of dental age estimation in a sample of Saudi Arabian population

Yassin, Syed M.

doi:10.1080/00450618.2020.1766110

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…[ 4 ] These above-mentioned scales developed by Demirjian et al also formed the basis for developing the population-specific and tooth-specific age estimation methods. [ 5 6 7 8 9 ] As ordinal scales are used to grade the developmental stages of teeth, there exists a chance for subjectivity in grading by different raters or observers. The radiographic studies based on heterogeneous groups of observers are thus the need of the hour.…”

Section: Introductionmentioning

confidence: 99%

Inter-observer agreement in the radiographic interpretation of Demirjian's developmental stages in the mandibular second and third molars – A comparative study

Pillai

Nilendu²,

Thomas³

et al. 2021

Journal of Oral and Maxillofacial Pathology

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Background: The developmental stages of the teeth in the radiographs are graded on an ordinal scale. The present study was conducted using 123 digital orthopantomograms from individuals in the age group of 5 to 22 years and to analyze and evaluate the inter-observer agreement in grading the developmental stages of second and third molars. Four observers with different levels of practical experience in age estimation participated in the study. The development stages of both the molars in the lower left quadrant (3 rd quadrant) were assigned based on the Demirjian's 10 stage chart. The percentage agreement and Kappa statistics were used to test the agreement between the observers. The data of the observer 1 were used as the standard for the comparison. RESULTS: There was 70.0%–75.6% agreement among the observers in staging second molar and 52%–68.3% for the third molars. There was an excellent agreement ( k > 080) between observer 1 and observer 2 and a good agreement ( k = 060–0.79) between observer 1 and the other two observers for both the molars. The Fleiss Kappa revealed moderate to a good overall agreement for both the molars ( k = 0.51–0.66). The Freidman's test revealed a significant difference in the grading of third molars between all the raters (χ 2 = 25.02, df 3, P < 0.001) and for the second molar the difference was not significant (χ 2 = 3.89, df 3, P > 0.05). The stage-wise overall agreement was fair for Stage 3 in the second molar and Stage 9 and Stage 4 in the third molar. Conclusions: In conclusion, proper training in the radiographic interpretation of developmental stages may minimize the errors during the age estimation methods.

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Section: Introductionmentioning

confidence: 99%

Inter-observer agreement in the radiographic interpretation of Demirjian's developmental stages in the mandibular second and third molars – A comparative study

Pillai

Nilendu²,

Thomas³

et al. 2021

Journal of Oral and Maxillofacial Pathology

View full text Add to dashboard Cite

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Comparative evaluation of Demirjian’s four teeth and alternate four teeth methods for the dental age estimation in children and adolescents of Varanasi region

Mishra

Srivastava

Pandey

et al. 2022

Journal of Indian Society of Pedodontics and Preventive Dentistry

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Background: Age estimation is an important approach in the field of forensics and medical sciences to assists in clinical practice, medico-legal cases, and in criminal cases of judicial punishment. Aim: This study aim the applicability and comparison of four-teeth method and the alternate four-teeth method of Demirjian’s approach among the Varanasi population. Settings and Design: This is a cross-sectional prospective study on the population of Varanasi region children and adolescents. Materials and Methods: Four hundred and thirty-two panoramic images of children and adolescents (237 boys and 195 girls) aged 3–16 years, from the population of Varanasi region oriental was assessed using the four-teeth method and the alternate four-teeth method of Demirjian’s approach, for the estimation of dental age. Statistical Analysis: Pearson’s two tailed test was applied to establish the correlation between chronological age and estimated dental age and Paired t-test was applied to check the statistical significance between mean chronological age and mean estimated dental age. Results: The dental age of boys was overestimated by 0.39 ± 1.15 years (P < 0.001) and dental age was underestimated by − 0.34 ± 1.15 years (P < 0.001) among girls using the Demirjian’s four teeth method. According to Demirjian’s alternate four teeth method, the sample of boys overestimated the dental age by 0.76 ± 1.00 years (P < 0.001) with the statistically significant difference. While the sample of the girls had negligible overestimation of 0.04 ± 1.03 years (P = 0.580) with no statistically significant difference. Conclusion: Demirjian’s four teeth method is better to estimate dental age in boys, whereas Demirjian’s alternate four teeth method in girls of Varanasi region.

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Accuracy of Demirjian’s four methods of dental age estimation in a sample of Saudi Arabian population

Cited by 2 publications

References 38 publications

Inter-observer agreement in the radiographic interpretation of Demirjian's developmental stages in the mandibular second and third molars – A comparative study

Inter-observer agreement in the radiographic interpretation of Demirjian's developmental stages in the mandibular second and third molars – A comparative study

Comparative evaluation of Demirjian’s four teeth and alternate four teeth methods for the dental age estimation in children and adolescents of Varanasi region

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