Definition and development of vertical preparation

– Why Vertical Preparation is underused? Prejudices about vertiprep;

– How to define a vertical preparation;

– Difference beetween feather and and knife edge;

– Edgeless and shoulderless preparation;

– Conceptional differencies between margin and non-margin preparation;

– What is Butt-bur in prosthodontics used for?

– Why is vertical preparation is friendly for periodontal patients?