The effects of temperature on extracted teeth of different age groups: A pilot study


Renjith George
Wesley Tan
Agnes Shih Yi
Preethy Donald


Context: Type of dentition and age related changes may affect the behavior of dental hard tissues under thermal stress. Aim: This study was conducted to analyze the effects of varying temperatures on extracted teeth of different age groups in a simulated laboratory set up. Settings and Design: Experimental pilot study. Methods and Material: Extracted teeth from three age groups (deciduous, young permanent and adult permanent) were collected and were exposed to three different temperatures (400°C, 700°C and 1000°C) in a laboratory set up. Post-test changes were analyzed visually and radiographically. Results: (1) The colour changes of the teeth may serve as an indicator for the temperature to which they were exposed. (2) Deciduous teeth tolerated thermal stress with lesser morphological changes compared to young and adult permanent teeth. (3) Coronal dentin of elderly permanent teeth appeared to be more resistant to thermal stress compared to that of young permanent teeth. (4) The root portion of the teeth showed better tolerance to temperature while crown was fragmented easily under thermal stress. Conclusion: The age factor and type of the dentition may influence the heat induced changes in teeth. These variables should be taken into consideration while applying comparative dental identification methods where dental hard tissues are exposed to extreme temperatures.


How to Cite
Renjith George, Wesley Tan, Agnes Shih Yi, & Preethy Donald. (2017). The effects of temperature on extracted teeth of different age groups: A pilot study. Journal of Forensic Dental Sciences, 9(3), 165–174.


  1. Norrlander AL. Burned and incinerated remains. In: Bowers CM, editor. Manual of Forensic Odontology. Colorado Springs: American Society of Forensic Odontology; 1997.
  2. Fereira JL, Fereira AE, Ortega AI. Methods for the analysis of hard dental tissues exposed to high temperatures. Forensic Sci Int 2008;178:119-24.
  3. Delattre VF. Burned beyond recognition: Systematic approach to the dental identification of charred human remains. J Forensic Sci 2000;45:589-96.
  4. Merlati G, Savlo C, Danesino P, Fassina G, Menghini P. Further study of restored and un-restored teeth subjected to high temperatures. J Forensic Odontostomatol 2004;22:34-9.
  5. Patidar KA, Parwani R, Wanjari S. Effects of high temperature on different restorations in forensic identification: Dental samples and mandible. J Forensic Dent Sci 2010;2:37-43.
  6. Moreno S, Merlati G, Marin L, Savio C, Moreno F. Effects of high temperatures on different dental restorative systems: Experimental study to aid identification processes. J Forensic Dent Sci 2009;1:17-23.
  7. Rotzscher K, Grundmann C, Benthaus S. The effects of high temperatures on human teeth and dentures. Int Poster J Dent Oral Med 2004;6: p. 213.
  8. Muller M, Berytrand MF, Quatrehomme G, Bolla M, Rocca JP. Macroscopic and microscopic aspects of incinerated teeth. J Forensic Odontostomatol 1998;16:1-7.
  9. Karkhanis S, Ball J, Franklin D. Macroscopic and microscopic changes in incinerated deciduous teeth. J Forensic Odontostomatol 2009;27:9-19.
  10. Palamara J, PhakeyPP, RachingerWA, Orams HJ. The ultrastructure of human dental enamel heat-treated in the temperature range 200°C to 600°C. J Dent Res 1987;66:1742‑7.
  11. Wang LJ, Tang R, Bonstein T, Bush P, Nancollas GH. Enamel demineralization in primary and permanent teeth. J Dent Res 2006;85:359-63.
  12. De Menezes OliveiraMA, TorresCP, Gomes‑SilvaJM, ChinelattiMA, De Menezes FC, Palma-Dibb RG, et al. Microstructure and mineral composition of dental enamel of permanent and deciduous teeth. Microsc Res Tech 2010;73:572-7.
  13. Fosse G. A quantitative analysis of the numerical density and the distributional pattern of prisms and ameloblasts in dental enamel and tooth germs 3. The calculation of prism diameters and numbers of prisms per unit area in dental enamel. Acta Odontol Scand 1968;26:315-36.
  14. Mortimer KV. The relationship of deciduous enamel structure to dental disease. Caries Res 1970;4:206-23.
  15. Costa LR, Watanabe I, Fava M. Study of prismless enamel in non-erupted human deciduous teeth. Braz J Morphol Sci 1996;13:219-223.
  16. Chowdhary N, Subba Reddy VV. Dentin comparison in primary and permanent molars under transmitted and polarised light microscopy: An in vitro study. J Indian Soc Pedod Prev Dent 2010;28:167-72.
  17. Angker L, Nockolds C, Swain MV, Kilpatrick N. Quantitative analysis of the mineral content of sound and carious primary dentine using BSE imaging. Arch Oral Biol 2004;49:99-107.
  18. Cuy JL, MannAB, Livi KJ, Teaford MF, Weihs TP. Nanoindentation mapping of the mechanical properties of human molar tooth enamel. Arch Oral Biol 2002;47:281-91.
  19. LeGeros RZ. Calcium phosphates in oral biology and medicine. Monogr Oral Sci 1991;15:1-201.
  20. VeisA. Mineralization in organic matrix framework. In: Dove PM, De Yoreo JJ, Weiner S, editors. Biomineralization. Reviews in Mineralogy and Geochemistry. Vol. 54. Washington, DC: The Mineralogical Society of America; 2003.
  21. Vasiliadis L, Darling AI, Levers BG. The histology of sclerotic human root dentine. Arch Oral Biol 1983;28:693-700.
  22. Kinney JH, NallaRK, Pople JA, BreunigTM, RitchieRO. Age-related transparent root dentin: Mineral concentration, crystallite size, and mechanical properties. Biomaterials 2005;26:3363-76.
  23. Xu C, Karan K, Yao X, Wang Y. Molecular structural analysis of non-carious cervical sclerotic dentin using Raman spectroscopy. J Raman Spectrosc 2009;25:1205-1212.
  24. Leventouri T, AntonakosA, KyriacouA, Venturelli R, Liarokapis E, Perdikatsis V. Crystal structure studies of human dental apatite as a function of age. Int J Biomater 2009;2009:698547.
  25. Metska E, Stavrianos C, Vasiliadis L. Estimation of dental age using root dentine translucency. Surgery J 2009;4:21-8.
  26. Savio C, Merlati G, Danesino P, Fassina G, Menghini P. Radiographic evaluation of teeth subjected to high temperatures: Experimental study to aid identification processes. Forensic Sci Int 2006;158:108-16.
  27. Prakash AP, Reddy SD, Rao MT, Ramanand OV. Scorching effects of heat on extracted teeth – A forensic view. J Forensic Dent Sci 2014;6:186-90.