Critical and subcritical area of implant prosthesis

Abstract

In the practice of Implantology, in order to provide the patient with an implant similar to the natural tooth, it is necessary to define natural and harmonic gingival contours. These contours make up the critical and subcritical area of the emergency profile, which influence the aesthetic aspects of the prosthesis on the implant, affecting the soft tissue profile and the stability of the gingival margin. The objective of the research was to analyze what the localized scientific studies deal with critical and subcritical areas of the implant prosthesis, carrying out a qualitative and descriptive literature review of studies published between 2009 and 2020, addressing definitions of critical and subcritical areas, their location as well as the attention that must be given to these before, during and after implant placement, in the monitoring of results. It was concluded that the critical and subcritical areas of the implant prosthesis are important for its stability, and depend on the correct manipulation of soft and hard tissues so that the contours are well defined, and thus the success of the procedure is achieved.