Perio iQ Volume 11, 3/2007 page 87-95 , 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: GraceyHu-FriedySwann-MortonDentaurumMitutoyo GraceyHu-FriedySwann-MortonDentaurumMitutoyo Original publication: Int J Periodontics Restorative Dent 2006;26:87–93.