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International Journal of Legal Medicine

, Volume 132, Issue 5, pp 1437–1446 | Cite as

Estimating age and the probability of being at least 18 years of age using third molars: a comparison between Black and White individuals living in South Africa

  • André Uys
  • H. Bernitz
  • S. Pretorius
  • M. Steyn
Original Article

Abstract

Third molar development of 705 White and 563 Black South African individuals aged between 15 and 25 years was assessed from panoramic radiographs obtained from the School of Dentistry, University of Pretoria, South Africa. The maxillary and mandibular left third molars were scored according to a ten-stage scoring system. Ancestry and sex differences in dental maturity were assessed, and the likelihood of an individual being 18 years of age was determined for each developmental stage. Statistically significant differences were noted among ancestry groups for most developmental stages, with South African Black individuals consistently maturing earlier than the White individuals. Statistically significant differences were noted among sex groups for some of the stages, mostly those near the final stages of root development. The results indicate that male third molars completed their development faster than that of females. The likelihood of an individual being 18 years of age based on the third molar development stage for the maxilla and mandible on its own was also determined. Combined likelihood results, for the maxillary and mandibular left third molars for stage H, increased the likelihood of being 18 years to 95% for all the studied ancestry and sex groups.

Keywords

Third molars South African Black and White individuals Root formation Dental maturation 

Notes

Acknowledgements

The researchers would like to acknowledge funding received from the National Research Foundation (NRF) of South Africa. Any opinions, findings and conclusions expressed in this paper are those of the authors, and therefore, the NRF does not accept any liability in regard thereto.

Compliance with ethical standards

The study was conducted in accordance with the ethical standards laid down by the Declaration of Helsinki [35]. Approval for the study was granted by the University of Pretoria, Faculty of Health Sciences (Ethics reference number: 263/2015).

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. 1.
    Thevissen PW, Kvaal SI, Dierickx K, Willems G (2012) Ethics in age estimation of unaccompanied minors. J Forensic Odontostomatol 30:85–102Google Scholar
  2. 2.
    Campbell EK (2006) Reflections on illegal immigration in Botswana and South Africa. Etude la Popul Africaine 21:1–23Google Scholar
  3. 3.
    Pelser E (2008) Learning to be lost: YOUTH crime in South Africa. Discussion Paper for the Hsrc Youth Policy Initiative, pp 1–14Google Scholar
  4. 4.
    Census Bureau (2012) Statistical release ( Revised ) Census 2011, p 78Google Scholar
  5. 5.
    Schmeling A, Grundmann C, Fuhrmann A, Kaatsch HJ, Knell B, Ramsthaler F, Reisinger W, Riepert T, Ritz-Timme S, Rösing FW, Rötzscher K, Geserick G (2008) Criteria for age estimation in living individuals. Int J Legal Med 122:457–460CrossRefPubMedGoogle Scholar
  6. 6.
    Bassed RB, Briggs C, Drummer OH (2011) Age estimation using CT imaging of the third molar tooth, the medial clavicular epiphysis, and the spheno-occipital synchondrosis: a multifactorial approach. Forensic Sci Int 212:273.e1–273.e5CrossRefGoogle Scholar
  7. 7.
    Garvin HM, Nicholas V, Uhl NM et al (2012) Developments in forensic anthropology: age- at-death estimation. In: A companion to forensic anthropol, 1st edn. Blackwell Publishing Ltd., Chichester, pp 202–223CrossRefGoogle Scholar
  8. 8.
    Nambiar P, Yaacob H, Menon R (1996) Third molars in the establishment of adult status - a case report. J Forensic Odontostomatol 14:30–33PubMedGoogle Scholar
  9. 9.
    Solari AC, Abramovitch K (2002) The accuracy and precision of third molar development as an indicator of chronological age in Hispanics. J Forensic Sci 47:531–535PubMedGoogle Scholar
  10. 10.
    Nyström M, Haataja J, Kataja M, Evalahti M, Peck L, Kleemola-Kujala E (1986) Dental maturity in Finnish children, estimated from the development of seven permanent mandibular teeth. Acta Odontol Scand 44:193–198CrossRefPubMedGoogle Scholar
  11. 11.
    Liversidge HM, Speechly T, Hector MP (1999) Dental maturation in British children: are Demirjian’s standards applicable? Int J Paediatr Dent 9:263–269PubMedGoogle Scholar
  12. 12.
    Nykänen R, Espeland L, Kvaal SI, Krogstad O (1998) Validity of the Demirjian method for dental age estimation when applied to Norwegian children. Acta Odontol 56:238–244CrossRefGoogle Scholar
  13. 13.
    Demirjian A, Goldstein H, Tanner JM (1973) A new system of dental age assessment. Hum Biol 45:211–227PubMedGoogle Scholar
  14. 14.
    Davis PJ, Hägg U (1994) The accuracy and precision of the “Demirjian system” when used for age determination in Chinese children. Swed Dent J 18:113–116CrossRefPubMedGoogle Scholar
  15. 15.
    McKenna CJ, James H, Taylor JA, Townsend GC (2002) Tooth development standards for South Australia. Aust Dent J 47:223–227CrossRefPubMedGoogle Scholar
  16. 16.
    Willems G, Van Olmen A, Spiessens B, Carels C (2001) Dental age estimation in Belgian children: Demirjian’s technique revisited. J Forensic Sci 46:893–895CrossRefPubMedGoogle Scholar
  17. 17.
    Gunst K, Mesotten K, Carbonez A, Willems G (2003) Third molar root development in relation to chronological age: a large sample sized retrospective study. Forensic Sci Int 136:52–57CrossRefPubMedGoogle Scholar
  18. 18.
    Liversidge HM (2008) Timing of human mandibular third molar formation. Ann Hum Biol 35:294–321CrossRefPubMedGoogle Scholar
  19. 19.
    Liversidge HM, Marsden PH (2010) Estimating age and the likelihood of having attained 18 years of age using mandibular third molars. Br Dent J 209:E13CrossRefPubMedGoogle Scholar
  20. 20.
    Reppien K, Sejrsen B, Lynnerup N (2006) Evaluation of post-mortem estimated dental age versus real age: a retrospective 21-year survey. Forensic Sci Int 159:84–88CrossRefGoogle Scholar
  21. 21.
    Olze A, Bilang D, Schmidt S, Wernecke KD, Geserick G, Schmeling A (2005) Validation of common classification systems for assessing the mineralization of third molars. Int J Legal Med 119:22–26CrossRefPubMedGoogle Scholar
  22. 22.
    Bei M (2009) Molecular genetics of tooth development. Curr Opin Genet Dev 19:504–510CrossRefPubMedPubMedCentralGoogle Scholar
  23. 23.
    Harris EF (2007) Mineralization of the mandibular third molar: a study of American blacks and whites. Am J Phys Anthropol 132:98–109CrossRefPubMedGoogle Scholar
  24. 24.
    Blankenship JA, Mincer HH, Anderson KM, Woods MA, Burton EL (2007) Third molar development in the estimation of chronologic age in American blacks as compared with whites. J Forensic Sci 52:428–433CrossRefPubMedGoogle Scholar
  25. 25.
    Olze A, Schmeling A, Rieger K, Kalb G, Geserick G (2003) Untersuchungen zum zeitlichen Verlauf der Weisheitszahnmineralisation bei einer deutschen Population. Rechtsmedizin 13:5–10CrossRefGoogle Scholar
  26. 26.
    Streckbein P, Reichert I, Verhoff MA, Bödeker RH, Kähling C, Wilbrand JF, Schaaf H, Howaldt HP, May A (2014) Estimation of legal age using calcification stages of third molars in living individuals. Sci Justice 54:447–450CrossRefPubMedGoogle Scholar
  27. 27.
    Olze A, Schmeling A, Taniguchi M, Maeda H, van Niekerk P, Wernecke KD, Geserick G (2004) Forensic age estimation in living subjects: the ethnic factor in wisdom tooth mineralization. Int J Legal Med 118:170–173CrossRefPubMedGoogle Scholar
  28. 28.
    Olze A, van Niekerk P, Schmidt S, Wernecke KD, Rösing FW, Geserick G, Schmeling A (2006) Studies on the progress of third-molar mineralisation in a black African population. HOMO - J Comp Hum Biol 57:209–217CrossRefGoogle Scholar
  29. 29.
    Lewis JM, Senn DR (2010) Dental age estimation utilizing third molar development: a review of principles, methods, and population studies used in the United States. Forensic Sci Int 201:79–83CrossRefPubMedGoogle Scholar
  30. 30.
    Mincer HH, Harris EF, Berryman HE (1993) The a.B.F.O. Study of third molar development and its use as an estimator of chronological age. J Forensic Sci 38:379–390CrossRefPubMedGoogle Scholar
  31. 31.
    Willershausen B, Löffler N, Schulze R (2001) Analysis of 1202 orthopantograms to evaluate the potential of forensic age determination based on third molar developmental stages. Eur J Med Res 6:377–384PubMedGoogle Scholar
  32. 32.
    Kullman L, Johanson G, Akesson L (1992) Root development of the lower third molar and its relation to chronological age. Swed Dent J 161–167Google Scholar
  33. 33.
    Cavric J, Galic I, Vodanovic M et al (2016) Third molar maturity index (I) for assessing age of majority in a black African population in Botswana. Int J Legal Med 130:1109–1120CrossRefPubMedGoogle Scholar
  34. 34.
    Lee S-H, Lee J-Y, Park H-K, Kim Y-K (2009) Development of third molars in Korean juveniles and adolescents. Forensic Sci Int 188:107–111CrossRefPubMedGoogle Scholar
  35. 35.
    World Medical Association (2013) World medical association declaration of Helsinki ethical principles for medical research involving human subjects. JAMA 310:2191–2194CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Oral Pathology and Oral Biology, Faculty of Health SciencesUniversity of PretoriaGautengSouth Africa
  2. 2.Department of Actuarial ScienceUniversity of PretoriaGautengSouth Africa
  3. 3.Human Variation and Identification Research Unit, School of Anatomical Sciences, Faculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa

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