Perio iQ Volume 8, 4/2006 page 79-89 , more by this author, more by this author, more by this author, more by this authormore by this author back Key words: Trade name and manufacturer: Sigma ChemicalOptronics Imaging SystemK.S 300Zeiss Sigma ChemicalOptronics Imaging SystemK.S 300Zeiss Original publication: Int J Oral Maxillofac Implants 2006;21;535–542.