ProLab iQ Volume 9, 1/2009 page 51-64 , more by this author, more by this authormore by this author back Key words: Trade name and manufacturer: Aesthetic GaugesCrown Lengthening GaugeHu-FriedyVenus PorcelainHeraeus Kulzer Aesthetic GaugesCrown Lengthening GaugeHu-FriedyVenus PorcelainHeraeus Kulzer Original publication: QDT 2009;63–76.