Abstract: Objective To explore a new method in order to extract DNA from bones and teeth automatically. Methods Samples of 33 bones and 15 teeth were acquired by freeze-mill method and manual method, respectively. DNA materials were extracted and quantified from the triturated samples by AutoMate Express^TM forensic DNA extraction system. Results DNA extraction from bones and teeth were completed in 3 hours using the AutoMate Express^TM forensic DNA extraction system. There was no statistical difference between the two methods in the DNA concentration of bones. Both bones and teeth got the good STR typing by freeze-mill method, and the DNA concentration of teeth was higher than those by manual method. Conclusion AutoMate ExpressTM forensic DNA extraction system is a new method to extract DNA from bones and teeth, which can be applied in forensic practice.

Key words: forensic genetics, bones, teeth, AutoMate Express^TM forensic DNA extraction system