Thanks to all who wrote about the "tape system" technique.   I mainly cut
mandibles of baboons or dogs with the teeth and  titanium implants included.
I use a Leica 1600 microtome saw, and I embedded in MMA.     

Right now I have a project of small teeth from ferets and bone cores from
human.  I am cutting these on a Leica RM 2155.   With no luck..............I
found that tape system in a catolog and have ordered some of the items,
hoping this will work.....Thanks again for all the help.  And for those of
you out there that cut  teeth and bone and implants please keep in touch...