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The influence of impaction on the rate of third molar mineralisation in male black Africans

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Abstract

One of the main criteria used in dental age diagnostics in living adolescents and young adults is assessment of the mineralisation stage of the third molars. In the case of Europid populations, it has been established that impaction status has an influence on the rate of mineralisation of the third molars. In view of this, a study was undertaken to determine whether the chronological process of wisdom tooth mineralisation is dependent upon impaction status in black Africans too. Orthopantomograms (553) of 437 male and 116 female black South Africans with verified birth dates in the age group between 10 and 26 years were studied. Mineralisation stage and impaction status were determined for all third molars. Statistical measures were calculated for the mandibular wisdom teeth at stages F, G and H and for the maxillary wisdom teeth at stage H in the male gender for both impacted and non-impacted third molars. It was ascertained that the minimum age in persons with impacted third molars, depending on the wisdom tooth observed, was 0.19–2.57 years higher than in those with non-impacted wisdom teeth. Test persons with impacted mandibular wisdom teeth at stage F or G were on average between 0.32 and 1.88 years older than those with non-impacted mandibular wisdom teeth. The 50 % probability values of impacted wisdom teeth at stage H were 1.85–3.31 years higher than those in non-impacted wisdom teeth. The conclusion was drawn that in male black Africans, impacted mandibular wisdom teeth mineralise more slowly than non-impacted lower third molars. The presence of impacted mandibular wisdom teeth in mineralisation stage H in male black Africans does not, however, furnish proof of completion of the 18th year of life beyond reasonable doubt.

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Acknowledgments

This study was supported by a grant from the Deutsche Forschungsgemeinschaft (German Research Foundation) (SCHM 1609/1-1).

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Authors and Affiliations

  1. Institut für Rechtsmedizin, Charité—Universitätsmedizin Berlin, Turmstr. 21 (Haus N), 10559, Berlin, Germany

    Andreas Olze

  2. Department of Oral Pathology and Oral Biology, University of Pretoria, Pretoria, 0001, South Africa

    Piet van Niekerk

  3. Institut für Rechtsmedizin, Röntgenstraße 23, 48149, Münster, Germany

    Ronald Schulz & Andreas Schmeling

  4. Statistik-Service S2, Schwedter Str. 225, 10435, Berlin, Germany

    Sebastian Ribbecke

Authors
  1. Andreas Olze
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  2. Piet van Niekerk
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  3. Ronald Schulz
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  4. Sebastian Ribbecke
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  5. Andreas Schmeling
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Correspondence to Andreas Schmeling.

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Olze, A., van Niekerk, P., Schulz, R. et al. The influence of impaction on the rate of third molar mineralisation in male black Africans. Int J Legal Med 126, 869–874 (2012). https://doi.org/10.1007/s00414-012-0753-z

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  • DOI: https://doi.org/10.1007/s00414-012-0753-z

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