Treatment of a totally edentulous patient with an implant-supported fixed conometric prosthesis in the lower and upper jaw

December, 2020

Surgeons/Restorative dentists:
Dr. Giuseppe Musiello – Vico del Gargano (FG), Italy 

This case report shows the immediate loading of four XCN® implants in the lower jaw with a provisional fixed full-arch conometric prosthesis and the chairside fabrication of a provisional fixed full-arch conometric prosthesis on six osseointegrated implants in the upper jaw during the second surgical stage (re-opening). The 50-year-old completely edentulous male patient asked for a fixed restoration for both jaws. After careful study of CBCT examination and stabilized intermaxillary relationships with new diagnostic removable prostheses, it was decided to place ten implants, six in the maxilla and four in the mandible. As all four implants in the mandible had a good primary stability, implants were immediately provisionalized with a fixed conometric prosthesis. Due to the poor quantity and quality of bone, in the maxilla the immediate denture was inserted during the second surgical stage after 4 months of submerged healing. After 2 months, both provisional conometric prostheses were removed for impression taking on conometric abutments in order to fabricate two final fixed conometric prostheses with carbon fiber framework and the esthetic part with teeth and gingival composite portion.

XCN® conometric prosthesis obtains the friction retention through titanium abutments (MUA-Conics) with a 5-degree tapered top (half angle) and preformed conometric caps, made of PEEK, with an internal connection with the same taper angle, that are fixed within the prosthesis. The use of conometric friction retention as anchorage system for the prosthesis simplifies and speeds up all sessions. The ease with which a removable prosthesis can be transformed into a provisional fixed conometric prosthesis is a great advantage, especially in immediate loading. The speed with which conometric prostheses are removed and repositioned during all sessions (relining, impression taking, delivery of the final prosthesis) is one of the great advantages of this prosthesis type.

Laboratory:
Pasquale Martino – Foggia, Italy

Link to the original article published in 2020

December, 2020 -