Which impression for which clinical situation in fixed prosthesis?

Dental impression is a crucial step in the making of a fixed prosthesis. It must accurately transmit the morphological and dimensional data of the dental preparations to the dental technician. The diversity of clinical situations leading to a variety of impression techniques and the multiplicity of increasingly efficient materials exposes the practitioner to a confusing situation while choosing impression’s materials and techniques. Our work focuses on the different elements to be evaluated and corrected before the impression is taken, and proposes, after providing a description of the main impression’s techniques, an analysis of possible clinical and technical factors affecting the choice of impression’s techniques. This thoughtful and reasoned simplification test makes it possible to optimize impression and successfully conduct prosthetic therapy.