Effect of Concentrated and Dilute Hydrochloric Acid on Tooth Morphology: A Forensic Study

Abstract

Introduction: Teeth are the most durable structure present in our human body because of the presence of enamel which persist and resist destruction more than any other bony structure. Hard nature with high amount of resistance of tissues present in the tooth prevents any destruction which increases the lifespan of the tooth. Aim: The main aim of this study is to observe the changes in tooth morphology when immersed in  dilute and concentrated hydrochloric acid. Materials and Methods: Non-caries teeth extracted due to periodontal reasons were used from the department of oral and maxillofacial surgery. The tooth added to alternate dilute and concentrated hydrochloric acid was observed till 6th day and the changes were noted along with the photographs as observations. Results: The tooth left in concentrated HCl showed rapid dissolution and was completely dissolved within 24 hours. Tooth left in dilute HCl dissolved gradually and showed less dissolution when compared to concentrated HCl. Conclusion: Most durable teeth also undergo erosion and dissolution when placed in dilute HCl and concentrated HCl. Teeth act as a major clue in the field of forensic odontology.