Exhibit 4.8 NOT VALID UNLESS COUNTERSIGNED BY TRANSFER AGENT. INCORPORATED UNDER THE LAWS OF THE STATE OF NEVADA.DentalServ.com • January 4th, 2008 • Services-computer integrated systems design
transferable on the books of the Corporation by the holder hereof, in person or by duly authorized attorney, upon surrender of this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar.
