In this episode I get to interview Dr .Alessandro Devigus Dr.Alessandro Devigus is a dentist from Switzerland & has a private practice since 1990. He is CEREC instructor at the Zurich Dental School& conducts Various international courses, lectures and has publications on CAD/CAM & Digital technologiesHe is also the Editor-in-chief of the „International Journal of Esthetic Dentistry“  by (Quintessence) An active member of the European academy of aesthetic dentistry.He is a Bio-Emulation Mentor, ITI Fellow & Speaker Follow the 32 Minute podcast for updates on all our forthcoming events/ contests/ events HEREWe speak about How different shade table evolved and what is the best technique to do shade selection & communication. Do digital share taking equipments work? and more ... Here are the time stamps 00:35 What is shade A2 is such an interesting topic. The logic behind the title explained 02:00 Are you an A3 dentist? I think even I can related to this right? 03:00 Did you know A3 is the MOST widely used shade in the world? 04:00 why is there always a difference between shade A2 manufactured by various companies? 06:00 Organizations controlling standardization of colors 08:00  Recommendation for the best shade guide 09:00  Concept of the best shade guide10:00 Value VS hue/ chroma 12:00  Cultural difference in color perceptions 14:00 the 3 step VS 2 step technique of using a shade guide 19:00  How to counter Metamerism in material selection 20:00 Digital shade guide & how to use it28:00 Do we dry the tooth or keep it wet before shade selection ? 29:00 Placement of shade tabs intra-orally 31:00  How to use a grey card34 Multilayerd VS Monolithic with respect to optical properties