Human identification is one of the biggest challenges faced, but with the advances in science, various techniques such as blood grouping have been used to identify different individuals. Forensic odontology analysis of dental evidence found that teeth are among tissues that can resist adverse environmental conditions, hence ensuring their features remain stable for a long period of time including blood group antigens which are known to be unique and unchangeable throughout an individual’s lifetime. This study explores the use of techniques like the absorption elution method in ABO blood grouping analysis to determine the reliability of teeth found in different conditions such as in normal environmental conditions, drowning cases, and burial cases for ABO blood grouping and explores the impact of long-term storage of teeth under the conditions on ABO blood group antigens, their preservation as well as advances in blood group determination to provide reliable information for forensic purposes.