Comparison of Gravoply plate barcode embedding in Complete Denture Prosthesis (CDP) to lamination barcode embedding for forensic identification purposes

Background: Mass disasters often occur in Indonesia, thus require the rapid identification of victims. Teeth can be one of the primary identifiers besides fingerprints and DNA. It includes dentures worn by the victim. The Denture Marking System is a technique for labeling dentures to prevent it being swapped to another. Labeling usually uses embedded barcode, made from laminated paper or gravoply plate. Purpose: To compare Gravoply plate barcode to lamination barcode embedded in prothese for forensic identification. Methods: The type of research is a true experimental study with a posttest-only control group design. The sample size used in this study is 20 CDP samples divided into two test groups, one is Gravoply plate barcode and another one is laminated photo paper barcode. Results: 10 sampels of gravoply plate barcode can be read correctly, meanwhile 6 of laminated photo paper barcode showed incorrect reading and only 4 of total samples had correct result. Chi-Square test obtained p value (p<0,05) means there is significant difference between two embedding techniques. Conclusion: Embedding barcode in denture protheses for forensic identification is better using Gravoply plate rather than laminated photo paper.