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Forensic Medicine Lab
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This forensic medicine lab studies how to determine the time since death and a person's identity from dental findings.

AboutAbout the lab
Exploring time since death and identity
The lab researches the estimation of the time since death of deceased persons and personal identification based on dental findings.
The lab works on estimating the time since death by measuring the color of livor mortis with a colorimeter.
The lab is also developing methods to confirm identity from the condition of the teeth, using an intraoral scanner and artificial intelligence.
There is also research from a pharmaceutical sciences perspective, through drug analysis of cases handled in forensic autopsies.
Key terms
- Livor mortis
- One of the color changes that appear on the body after death. In this lab, the color is measured with a colorimeter.
- Time since death
- The time that has passed between death and examination. This lab studies how to estimate it by measuring the color of livor mortis.
- Intraoral scanner
- A device that reads the shape and condition of the teeth in the mouth. The lab studies using it to collect dental findings and confirm identity.
ResearchResearch themes
The lab researches the estimation of the time since death of deceased persons and personal identification based on dental findings. Drug analysis of cases handled in forensic autopsies is another area of research.
*Illustrative imageEstimating time since death from the color of livor mortis
The lab studies a method of measuring the color of livor mortis with a colorimeter and using the values to estimate the time since death. The aim is to improve the accuracy of estimating time since death.
*Illustrative imagePersonal identification with an intraoral scanner and artificial intelligence
This research develops a method of confirming identity from dental findings using an intraoral scanner and artificial intelligence. The aim is to build dental identification methods designed for disaster situations.
*Illustrative imageDrug analysis of forensic autopsy cases
The lab analyzes drugs in cases handled in forensic autopsies and examines them from a pharmaceutical sciences perspective. The analysis and interpretation of poisoning by medicines and toxic substances is also covered in student education.
MembersFaculty
- ProfessorYosuke Usumoto
- Assistant ProfessorYukiko Sadamatsu
- Assistant ProfessorNozomi Eto
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Nuclear Forensics ( )” IAEA Imagebank / CC BY-SA 2.0 (cropped)
- Estimating time since death from the color of livor mortis: “San Diego County Sheriff's Department Regional Crime Laboratory 03” Issac I Navarro / CC BY 4.0 (cropped)
- Personal identification with an intraoral scanner and artificial intelligence: “Dentsply Sirona Primescan intraoral scanner 01” Викидим / CC BY 4.0 (cropped)
- Drug analysis of forensic autopsy cases: “Toxicology Research at FDA (NCTR )” The U.S. Food and Drug Administration / Public domain (cropped)
- Related lab (Cell Physiology Lab): “Epithelioid cells of mice in the cell culture” ArkhipovSergey / CC BY-SA 4.0 (cropped)
- Related lab (Growth and Developmental Medicine Lab): “Itzhak Levy 2” דוברות מרכז שניידר לרפואת ילדים בישראל / CC BY-SA 4.0 (cropped)
- Related lab (Neuroanatomy Lab): “Sagittal brain slice, UB Museum of Neuroanatomy, Buffalo, New York” Caldwbr / CC BY-SA 4.0 (cropped)
- Related lab (Basic Stem Cell Biology Lab): “Neural Stem Cells and Growth Hormone Receptor” Pdevesap / CC BY-SA 4.0 (cropped)
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