Richard J. Lazzara,Thomas S. Heylmun,Keith D. Beaty
申请号：
US09237605
公开号：
US08221499B2
申请日:
1999.01.25
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An infection-blocking dental implant in which a threaded portion which contacts bone is roughened except for up to three threads which may be exposed by bone recession after implantation, which have a smooth surface. Preferably, the implant is of titanium or titanium alloy and the threaded portion is roughened by a two-step acid treatment.
