The Reliability of Chronological Age Determination by Means of Mandibular Third Molar Development in Subjects in Croatia

OBJECTIVES: To determine the correlation between chronological age (CA) and mandibular third molar (MTM) development in a sample of Khyber Pakhtunkhwa (KP) population. Furthermore, to provide forensic reference data for age determination from MTM mineralisation. Finally, to derive regression formulae specific to this population to estimate age using MTM calcification stages. METHODOLOGY: Four hundred and seventy orthopantomographs (OPGs) of patients aged between 13-26 years from the Orthodontics department archive at the main tertiary dental hospital of KP were studied for development of MTM staging using Demirjian's method. Spearman's Correlation was applied to determine any relationship between CA and MTM development. An Independent two-sample t-test was performed to compare third-molar development in males and females. Population-specific models was developed using quantile regression analysis. RESULTS: A strong positive correlation was found between CA and MTM development (rs = 0.853; p- <0.001). The median quantile regression equation developed for entire sample is: Age = 8.8+ 1.4(developmental stage). Ninety-four percent of males and females at stage H were at least 18 years or older. CONCLUSION: Mandibular third-molars can be an appropriate guide for CA estimation in the KP population. Stage H is likely to occur at 18 years of age. This may be valuable for medicolegal suits requiring CA estimation. KEYWORDS: forensic odontology, forensic anthropology, panoramic radiographs, chronological age estimation, mandibular third-molar, Pakistan HOW TO CITE: Tariq Q, Tareen MA, Uddin I, Hussain U. Radiographic employment of mandibular third-molar mineralisation to estimate chronological age in a population of Peshawar, Pakistan. J Pak Dent Assoc 2021;30(1):39-44.

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Sensitivity and Specificity of Mandibular Third Molar Calcification at Chronological Age and Hand Wrist Maturation Stage to Discriminate Between Female and Male at Pubertal Growth Period

The Open Dentistry Journal ◽

10.2174/1874210602115010551 ◽

2021 ◽

Vol 15 (1) ◽

pp. 551-557

Author(s):

Endah Mardiati ◽

Ira Komara ◽

Himawan Halim ◽

Dikdik Kurnia ◽

Ani Melani Maskoen

Keyword(s):

Sensitivity And Specificity ◽

Third Molar ◽

Growth Period ◽

Chronological Age ◽

Maturation Stage ◽

Cross Sectional ◽

Pubertal Growth ◽

Mandibular Third Molar ◽

Significant Difference ◽

Stage D

Background: The mandibular third molar is the last tooth that is not completely developed by the time pubertal growth has been finished. Maturation of the mandibular third molar is one of the physiological maturation indicators that can be used to determine the stage of pubertal growth. Objective: The aim of the study was to determine the sensitivity and specificity of mandibular third molar calcification at chronological age and hand wrist maturation stage to discriminate between female and male at pubertal growth period. Methods: It is a retrospective study with a cross-sectional approach using panoramic and hand-wrist digital radiographs of 279 females and 144 males, age 8-17 years, with a total of 423 panoramic radiographs and 423 hand-wrist radiographs. Statistical analysis was performed using Excel Mega Stat. ANOVA to analyze the differences between mandibular third molar calcification at chronological age and hand-wrist maturation stage, and t-test was used to analyze the differences between females and males. Spearman rank correlation was used for the analysis of the correlation between mandibular third molar calcification with chronological age and hand-wrist maturation stage; sensitivity and specificity were used to discriminate the pubertal growth period between mandibular third molar calcification and hand-wrist maturation stage. Results: There were significant differences found in mandibular third molar crown maturation stage B and C, but no significant difference was observed between mandibular third molar stage A, D, E, F, G and H, between females and males. The highest percentage of mandibular third molar crown formation in females was observed at stage D (6.68%) at MP3u, and in males, it was observed at stage D (8.83%) at SMI-4. The highest percentage of root formation in females was stage E (8.24%) at the SMI-10 stage, and males stage F (4.86%) at MP3u. The correlation was observed between mandibular third molar calcification with hand-wrist, females 0.22 and males 0.43, and chronological age 0.60 for females and 0.69 for males. The highest sensitivity of mandibular third molar calcification of 97.0% was observed in female at SMI-4 of hand-wrist maturation with specificity of 100%, while in male, a sensitivity of 94.5% was observed at SMI-2 stage with a specificity of 99.99%. Conclusion: There were significant differences found in mandibular third molar calcification between females and males except for stage B and stage C; weak correlation was observed between mandibular third molar calcification and hand-wrist, and moderate correlation was observed with chronological age. The sensitivity and specificity in females and males indicate that mandibular third molar calcification is only useful for diagnosing the pre-pubertal growth phase.

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Calcification of the mandibular third molar and its relation to skeletal and chronological age in children

American Journal of Orthodontics ◽

10.1016/0002-9416(57)90029-5 ◽

1957 ◽

Vol 43 (4) ◽

pp. 304-306

Keyword(s):

Third Molar ◽

Chronological Age ◽

Mandibular Third Molar

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Correlation Between the Maturation Stages of Mandibular Third Molars and Chronological Age in Patients Visiting Sardar Begum Dental College, Peshawar

Journal of Gandhara Medical and Dental Science ◽

10.37762/jgmds.5-2.79 ◽

2019 ◽

Vol 5 (2) ◽

pp. 3-7

Author(s):

Muhammad Ilyas ◽

Asma Khan ◽

Syed Murad Ali Shah ◽

Salman Khan ◽

Junaid Nadeem Malik

Keyword(s):

Pearson Correlation ◽

Third Molar ◽

Cross Sectional Study ◽

Chronological Age ◽

P Value ◽

Third Molars ◽

Cross Sectional ◽

Mandibular Third Molar ◽

Maturation Stages ◽

Mandibular Third Molars

OBJECTIVES: The objective of this study was to determine the correlation of chronological age with the maturation stages of mandibular third molar. METHODOLOGY: This descriptive, cross-sectional study was conducted at Sardar Begum Dental College, Gandhara University Peshawar on 384 patients from January 2018 to June 2018 and included patients having age 11-26 years with good quality Orthopantomogram showing mandibular third molar tooth germs bilaterally. Data were analyzed using SPSS version 22. p ≤ 0.05 was considered as statistically significant. RESULTS: Females 286 (74.5%) were predominant than males 98 (25.5%) with mean age presentation of 18.12±3.03 years. The most frequent stage of Demirjian’s stages of mandibular third molar was stage F (24.7%). Pearson correlation showed that maturation stages of mandibular third molars were significantly related to the chronological age ( r=0.446, p value=0.00). CONCLUSION: A correlation between maturation stages of mandibular third molars and chronological age existed.

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CALCIFICATION OF THE MANDIBULAR THIRD MOLAR AND ITS RELATION TO SKELETAL AND CHRONOLOGICAL AGE IN CHILDREN1

Child Development ◽

10.1111/j.1467-8624.1956.tb04824.x ◽

1956 ◽

Vol 27 (4) ◽

pp. 459-473

Author(s):

Arthur Demisch ◽

Peter Wartmann

Keyword(s):

Third Molar ◽

Chronological Age ◽

Mandibular Third Molar

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Assessment of Age at the Stages of the Eruption of Third Molar Teeth among the People of North-Eastern India

BioMed Research International ◽

10.1155/2021/9714121 ◽

2021 ◽

Vol 2021 ◽

pp. 1-6

Author(s):

Mahanta Putul ◽

Ranjumoni Konwar ◽

Malamoni Dutta ◽

Bharati Basumatary ◽

Madhab Chandra Rajbongshi ◽

...

Keyword(s):

Tooth Development ◽

Age Groups ◽

Age Determination ◽

Third Molar ◽

Chronological Age ◽

Chi Square ◽

Cross Sectional ◽

General Physical Examination ◽

The Third ◽

Third Molar Eruption

Background and Objectives. In the biological age determination of a person’s teeth at adolescence, the third molar (M3) or wisdom tooth development is considered a dependable method used over the years. The present research intended to evaluate the age from the eruption status of M3 and analyze and equivalence with a different quadrant of the jaws. Methods. A cross-sectional descriptive and analytical study was undertaken with 1060 Assamese individuals (642 males and 418 females) aged 14–26 years and was subjected to a clinical, dental, and general physical examination from January 2014 to December 2018. The data were statistically analyzed using Microsoft Excel and the Statistical Package for the Social Sciences (SPSS) version 22. The significant differences among variables were tested using the chi-square test and Student’s t -test, considering a p value < 0.05 as significant. Results. The carried-out research showed no eruption (NE) status of M3 with an overall mean (±SD) age at 17.39 (±2.273) years, although a significantly lower age among males with a mean age of 16.92 (±2.138) years ( p value < 0.001) was observed. The mean age (overall) for the complete eruption (CE) was observed at 20.33 (±2.566) years, which was seen earlier in males. The mandibular M3 appears earlier compared to the maxillary M3. The third molar eruption (TME) on both left and right quadrants of the jaw was observed substantially earlier in the lower jaw, compared to the upper jaw ( p value < 0.025). The earliest CE of M3 was marked at 15 years. The differences in the frequencies of TME in different chronological age groups were found significant ( p value < 0.001). A significant association between gender and TME ( p value < 0.045) in the current study is worth noting. Conclusion. Thus, determined by TME as a valid method, age can be used for various purposes to establish a person’s identity. Dental age estimated using third molar eruption status has a weighty association with chronological age. Thus, it should be utilized to determine the likely age of an individual.

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