Chaturvedi Tp
Faculty of Dental Sciences, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
Clin Cosmet Investig Dent. 2013 Aug 19;5:57-61. doi: 10.2147/CCIDE.S35170. eCollection 2013.
The oral cavity provides an ideal and unique environment for study of biological processes involving metallic dental aids. Dental materials within the mouth interact continually with physiological fluids. Oral tissues are exposed to a veritable bombardment of both chemical and physical stimuli as well as the metabolism of many species of bacteria; yet, for the most part, oral tissues remain healthy. The pH of saliva varies from 5.2 to 7.8. Teeth, restorations, or any prosthesis including dental implants in the oral cavity have to function in one of the most inhospitable environments in the human body. They are subject to larger temperature and pH variations than most other parts of the body. Corrosion, the graded degradation of materials by electrochemical attack, is of concern particularly when dental implants are placed in the hostile electrolytic environment provided by the human mouth. Allergic reactions may occur from the presence of ions produced from the corrosion of implants. The present article describes various manifestations of allergic reactions due to implant material in the oral cavity.
口腔为研究涉及金属牙科辅助器具的生物过程提供了一个理想且独特的环境。口腔内的牙科材料不断与生理流体相互作用。口腔组织会受到化学和物理刺激以及多种细菌代谢的持续冲击；然而，在很大程度上，口腔组织仍保持健康。唾液的pH值在5.2至7.8之间变化。牙齿、修复体或口腔内的任何假体，包括牙种植体，都必须在人体最恶劣的环境之一中发挥作用。它们比身体的大多数其他部位承受更大的温度和pH值变化。腐蚀是材料因电化学侵蚀而逐渐降解的过程，当牙种植体置于人体口腔提供的恶劣电解环境中时，腐蚀尤其令人担忧。植入物腐蚀产生的离子可能会引发过敏反应。本文描述了口腔内植入材料引起的过敏反应的各种表现。
