论文部分内容阅读
人类用汞合金充填牙齿龋洞已有很长的历史了.汞合金因其性能上的优越性,所以一直无法由其它牙科充填材料所替代.近年来,人们对汞合金是否对人体有害这一问题一直争论不休,目光远大的研究人员便着手研究牙科汞合金的代用品.最近,美国牙科学会所属的Paffenbarger研究中心和美国“国家标准与技术研究所”合作研制了一种牙科无汞充填合金,填补了这方面的空白.这种牙科无汞充填合金的基本成分是银和锡.由于发明者对合金成分与技术细节均已申报专利,所以对其情况只能做一大致的介绍:
It has been a long history for human beings to fill dental cavities with amalgam, which has never been replaced by other dental fillings because of its superiority in performance. In recent years, there has been a growing interest in the amalgam that is harmful to humans The problem has been debated endlessly, ambitious researchers are beginning to study dental amalgam substitutes.Recently, the American Dental Association affiliated Paffenbarger Research Center and the United States, “National Institute of Standards and Technology” has developed a dental mercury-free filling alloy , Filling in the blank.This dental mercury-free filling alloy basic components of silver and tin.Because the inventor of the alloy composition and technical details have been declared patent, so the situation can only make a general introduction: