Western Saudi adolescent age estimation utilising third molar development

ABSTRACT

Objective: The aim of this study was to establish reference data on third molar morphology/development for age estimation in Western Saudi adolescents, between ages 14 and 23 years of old. Materials and Methods: The orthopantomograms of 130 individuals (males and females), were examined, and the stage of third molar development were evaluated. Results: Mean ages, standard deviations, and percentile distributions are presented for each stage of development. The mean estimated age for all participants (n = 130) was 219.7 months, and this differed significantly (P < 0.05) from the mean chronological age (226.5 months). Deviations of predicted age from real age showed 28.5% of all participants had their age estimated within 1 year (±12 months) of their chronological age. Most (43%) had their age underestimated by more than 12 months and the remaining 28.5% had their age overestimated by more than 12 months of their chronological age. Differences in left-right symmetry information of third molars were detected and were higher in the maxilla (92%) than in the mandible (82%). For all molars reaching stage “H” most individuals (males and females) were over the age 18 years of old. Males reach the developmental stages earlier than females. Conclusion: Third molar tooth development can be reliably used to generate mean age and the estimated age range for an individual of unknown chronological age. Further studies with large populations are needed for better statistical results.

Key words:

Age estimation - chronological age - forensic odontology - third molars - tooth mineralization - Western Saudi Arabia

• REFERENCES

• 1 Ritz-Timme S, Cattaneo C, Collins MJ, Waite ER, Schütz HW, Kaatsch HJ. et al. Age estimation: the state of the art in relation to the specific demands of forensic practise. Int J Legal Med 2000; 113: 129-36
• 2 Seen DR, Weems R. Manual of Forensic Odontology. 5th ed.. USA: CRC Press; 2013
• 3 Smith BH. Dental development and the evolution of life history in Hominidae . Am J Phys Anthropol 1991; 86: 157-74
• 4 Nelson SJ, Ash M. Wheeler's Dental Anatomy, Physiology, and Occlusion. 9th ed.. St. Louis, Mo: Saunders Elsevier; 2010
• 5 Anderson DL, Thompson GW, Popovich F. Age of attainment of mineralization stages of the permanent dentition. J Forensic Sci 1976; 21: 191-200
• 6 Suri L, Gagari E, Vastardis H. Delayed tooth eruption: pathogenesis, diagnosis, and treatment. A literature review. Am J Orthod Dentofacial Orthop 2004; 126: 432-45
• 7 Almonaitiene R, Balciuniene I, Tutkuviene J. Factors influencing permanent teeth eruption. Part one – general factors. Stomatologija 2010; 12: 67-72
• 8 Gunst K, Mesotten K, Carbonez A, Willems G. Third molar root development in relation to chronological age: A large sample sized retrospective study. Forensic Sci Int 2003; 136: 52-7
• 9 Mincer HH, Harris EF, Berryman HE. The A.B.F.O. study of third molar development and its use as an estimator of chronological age. J Forensic Sci 1993; 38: 379-90
• 10 Flood SJ, Mitchell WJ, Oxnard CE, Turlach BA, McGeachie J. A comparison of Demirjian's four dental development methods for forensic age assessment. J Forensic Sci 2011; 56: 1610-5
• 11 Willems G. A review of the most commonly used dental age estimation techniques. J Forensic Odontostomatol 2001; 19: 9-17
• 12 Demirjian A, Goldstein H, Tanner JM. A new system of dental age assessment. Hum Biol 1973; 45: 211-27
• 13 Dahlberg AA. The changing dentition of man. J Am Dent Assoc 1945; 32: 676-90
• 14 Arany S, Iino M, Yoshioka N. Radiographic survey of third molar development in relation to chronological age among Japanese juveniles. J Forensic Sci 2004; 49: 534-8
• 15 Harris EF. Mineralization of the mandibular third molar: A study of American blacks and whites. Am J Phys Anthropol 2007; 132: 98-109
• 16 Alvesalo L, Tigerstedt PM. Heritabilities of human tooth dimensions. Hereditas 1974; 77: 311-8
• 17 Townsend GC, Brown T. Heritability of permanent tooth size. Am J Phys Anthropol 1978; 49: 497-504
• 18 Townsend GC, Brown T. Family studies of tooth size factors in the permanent dentition. Am J Phys Anthropol 1979; 50: 183-90
• 19 Kasper KA, Austin D, Kvanli AH, Rios TR, Senn DR. Reliability of third molar development for age estimation in a Texas Hispanic population: A comparison study. J Forensic Sci 2009; 54: 651-7
• 20 Solari AC, Abramovitch K. The accuracy and precision of third molar development as an indicator of chronological age in Hispanics. J Forensic Sci 2002; 47: 531-5