4 year follow-up of larger diameter 
implants placed in fresh extraction
sockets using a resorbable membrane
or a resorbable alloplastic material.
L Prosper; EF Gherlone; S Redaelli; M Quaranta
Int J Oral Maxillofac Implants 2003;18(6):856-864.
A system for the diagnosis,
placement, and prosthetic restoration
of root form implants (U.S. Patent #5,769,636).
Di Sario F.
J Prosthodont. 2003 Mar;12(1):2-7