Determination of Abo Blood Grouping from Dentine and Pulp

This study was carried out to determine the blood group from dentine and pulp and to correlate the same with blood collected from respective extraction socket. 30 teeth were extracted and stored dry for 6 months. An attempt to establish the blood group from dentin and pulp was made by Absorption–Elution method. The pulp showed positive results for 27 out of 30 teeth (sensitivity 90%). Two teeth showed negative results, wherein one tooth showed mistyping of blood grouping. Blood grouping from dentin was not correlating with control group. In view of the particularly significant positive results of ABO blood groups obtained from dental pulp in this study, it can be concluded that dental pulp can be used to establish identity, where teeth happen to be the only remnants available for personal identification. Dentine may not be reliable source for blood group determination and this warrants further research.