ABO bloodgrouping on tooth material

Area of Science:

• Forensic odontology
• Anthropology
• Immunogenetics

Background:

• Accurate ABO blood group determination is crucial in forensic and anthropological investigations.
• Teeth, particularly their hard tissues, are potential sources for DNA and blood group analysis.
• Previous studies have explored various dental tissues for blood group typing with mixed results.

Purpose of the Study:

• To evaluate the efficacy of ABO blood group determination in dental pulp, dentin, and enamel.
• To compare the reliability of blood group typing across different tooth components.
• To assess the influence of post-extraction time on the viability of blood group antigens in teeth.

Main Methods:

• ABO blood group typing was performed on dental pulp, dentin, and enamel from 35 human teeth.
• The adsorption-elution technique was employed for blood group determination.
• A blood-stained compress from the extraction wound served as the reference sample.
• Teeth were analyzed at two intervals: within 6 weeks and 6-10 months post-extraction.

Main Results:

• Blood group determination from dental pulp yielded reliable results.
• Blood group typing from dentin showed limited accuracy.
• Enamel proved to be of debatable value for ABO blood group determination.
• Similar outcomes were observed in both early and later post-extraction examination groups.

Conclusions:

• Dental pulp is a viable and reliable source for ABO blood group determination.
• Dentin and enamel present significant challenges for accurate ABO blood group typing.
• The adsorption-elution technique is effective for pulp-based blood group analysis in forensic contexts.