Trapp Brittany M, Tallman Sean D
Boston University School of Medicine, Program in Forensic Anthropology,72 East Concord Street, Boston, MA 02118, United States.
Boston University School of Medicine, Program in Forensic Anthropology,72 East Concord Street, Boston, MA 02118, United States; Departments of Anatomy & Neurobiology and Anthropology, Boston University School of Medicine,72 East Concord Street (L1004), Boston, MA 02118, United States.
Forensic Sci Int. 2018 Dec;293:77-85. doi: 10.1016/j.forsciint.2018.10.004. Epub 2018 Oct 16.
This study examines the effects of household corrosive products on 105 restored (silver amalgam and porcelain-fused-to metal) and non-restored teeth. Five household products were utilized, including hydrochloric acid, sulfuric acid and detergent. Teeth were radiographed before and after exposure and were submerged for 120 or 264h. Documentation included weight, mesiodistal and buccolingual crown measurements, ordinal scores, and photography at specific hours of exposure. Results indicate that 81.9% of the teeth could be positively matched by radiographs. Hydrochloric acid had the most destructive effects mainly to non-restored and silver amalgam teeth followed by sulfuric acid. Porcelain samples were more resistant to the effects of acid and conferred protection to the underlying teeth. Acid type, acid concentration and the restoration type are statistically significant contributors to alterations and in radiographic matching. Household corrosive substances may affect the morphology of teeth, and in some cases completely destroy teeth, which could conceal identifications.
本研究考察了家用腐蚀性产品对105颗经过修复（银汞合金修复和烤瓷熔附金属修复）和未修复牙齿的影响。使用了五种家用产品，包括盐酸、硫酸和洗涤剂。在暴露前后对牙齿进行X光检查，并将牙齿浸泡120或264小时。记录内容包括重量、近远中及颊舌向牙冠测量、序数评分以及在特定暴露时间的摄影。结果表明，81.9%的牙齿可以通过X光片得到阳性匹配。盐酸对未修复牙齿和银汞合金修复牙齿的破坏作用最大，其次是硫酸。烤瓷样本对酸的影响更具抵抗力，并能对其下方的牙齿起到保护作用。酸的类型、酸的浓度和修复类型在改变和X光匹配方面具有统计学意义。家用腐蚀性物质可能会影响牙齿的形态，在某些情况下会完全破坏牙齿，从而可能掩盖身份识别。
