论文部分内容阅读
人类牙齿的缺失和怎样有效的恢复已缺失牙所带来的问题已折磨了人类许多个世纪。曾尝试使用各种材料,包括经过雕刻的骨或象牙,各种金属和宝石作为假牙而被植入骨中。每年有数万人由于龋蚀,疾病,意外伤害,甚至因年迈而失去牙齿。美国每年约有五千五百万成年牙被失去,并估计在成年人中无牙者可高达20%。因此今日所存在的问题如同在古代一样,依然是一个现实的问题。本文的目的是对目前应用于牙科植入
The loss of human teeth and how to effectively restore the missing teeth have afflict humankind for centuries. Attempts have been made to use a variety of materials, including carved bone or ivory, and various metals and gemstones are implanted into bones as dentures. Tens of thousands of people lose their teeth every year due to caries, illness and accidental injuries. Approximately 55 million adult teeth are lost each year in the United States and it is estimated that up to 20% of toothless ones can be found in adults. Therefore, the problems that exist today are just as real as those in ancient times. The purpose of this paper is to present the current application in dental implants