Raj Makesh, Boaz Karen, Srikant N
Department of Oral and Maxillofacial Pathology, Tagore Dental College and Hospital, Chennai, Tamil Nadu, India.
J Forensic Dent Sci. 2013 Jan;5(1):7-10. doi: 10.4103/0975-1475.114536.
Teeth are the most durable structures that resist destruction more than skeletal tissue Commercially available acids can be used to destroy the body or a part, to mask human identification. The present study examines the effect of caustic acids on human dentition.
Ten upper anterior teeth each were immersed in 37% hydrochloric acid (conc. HCl), 65% nitric acid (conc. HNO3) and 96% sulfuric acid (conc. H2SO4). Teeth were retrieved, washed in distilled water, dried, photographed and radiographed at intervals of 15 min, 30 min, 1 hr, 3 hr, 5 hr and 8 hr.
Teeth placed in conc. HCl and conc. HNO3 dissolved completely after 8 hours, while that placed in conc. H2SO4 retained its morphology and radiographic dimension even after 8 hours.
Hence teeth can serve as a tool in identification (age estimation and sex determination) of the victim when in contact with conc. H2SO4.
牙齿是最耐用的结构，比骨骼组织更能抵抗破坏。市售酸可用于破坏尸体或身体部分，以掩盖身份识别。本研究考察苛性酸对人类牙列的影响。
将每组10颗上前牙分别浸泡在37%盐酸（浓HCl）、65%硝酸（浓HNO₃）和96%硫酸（浓H₂SO₄）中。每隔15分钟、30分钟、1小时、3小时、5小时和8小时取出牙齿，用蒸馏水冲洗、干燥、拍照并进行射线照相。
浸泡在浓HCl和浓HNO₃中的牙齿在8小时后完全溶解，而浸泡在浓H₂SO₄中的牙齿即使在8小时后仍保持其形态和射线照相尺寸。
因此，当与浓H₂SO₄接触时，牙齿可作为识别受害者（年龄估计和性别判定）的一种工具。
