Figure 4. Lower rehabilitation through tooth-implant-supported fixed partial prostheses. (A) Intraoral view. The sites for screwing the prosthesis onto the implants and the connections that link the portion supported by implants to that supported by teeth are visible. (B–D) Prosthetic components (left side): the prosthesis was designed in 2 components (D). A single crown on the tooth (C) and 2 crowns lingually connected on the implants (D). To minimize the disadvantages of mixed support, the connection between tooth and implants was designed with a rigid vertical constraint only in the apico-coronal direction (B). Thus, the physiological intrusion of the tooth during chewing was not hindered by the rigidity of the implants.