[Clinical form of preparations and prosthetic restoration after hemisection and root amputation].

With the expand of periodontology and present tendency to preserve the teeth, are appear news line forms for our preparations (of fixed prosthodontics). After hemisection or root-amputation, we are found of prosthetic reconstruction problem. This one should have to respect some simple principles on account of characteristic contour form of tooth after surgery. It must be important to have good indications, perfect execution, and meticulous realisation of provisionally prosthetic.