Recently, Neo Biotech in Korea has developed a special trephine bur with a sleeve they call the ACM or Auto Chip Maker. This unique device fits in the standard osteotomy latch type handpiece, is run between 300 to 500 rpms, and will penetrate 4mm deep to a safety stop, each penetration yielding about one cc of autogenous particulate. I have posted an eight minute video showing it being used to repair an ailing implant on you tube, which can be seen here:
http://www.youtube.com/watch?v=GqICDDfXM-A&list;=UUU49GWbwWG0uiwmbhm1xnyw&index;=1&feature;=plcp
