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Postmortem pink teeth: in vitro production.

C W van Wyk1

  • 1Oral and Dental Research Institute, University of Stellenbosch, Tygerberg, South Africa.

Journal of Oral Pathology
|November 1, 1988
PubMed
Summary
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Pink teeth discoloration occurs after blood hemolysis, becoming macroscopically obvious around six days postmortem. This experimental study used cadaver blood to simulate the process in dental tissues.

Area of Science:

  • Forensic Odontology
  • Biomaterials Science

Background:

  • Pink teeth discoloration is a postmortem phenomenon.
  • The exact timing and mechanism require further elucidation.

Purpose of the Study:

  • To experimentally induce pink teeth discoloration using cadaver blood.
  • To correlate the onset of tooth coloration with blood hemolysis patterns.

Main Methods:

  • Cadaver blood (postmortem interval 8-58h) was used to stain extracted teeth.
  • Teeth were bisected; one half received blood with skin (to simulate pulpal autolysis), the other received blood alone.
  • Discoloration was observed over time, and hemolysis was assessed histologically and via centrifuged blood.

Main Results:

  • Circumpulpal tooth discoloration began around the sixth day postmortem and progressed to 18 days.

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  • Hemolysis was evident by day six, with plasma and red blood cell separation lost in centrifuged blood.
  • No significant difference in discoloration was observed between teeth treated with blood alone versus blood with skin.

    • Conclusions:

    • Pink teeth staining is contingent upon the occurrence of hemolysis.
    • Macroscopic observation of pink discoloration typically becomes apparent approximately six days after death.