Fracture of zygoma implant after 8 years of function Luc@Vrielinck.be
Situation • Patient whishes: Fixed prosthesis in upper jaw and lower jaw • Diagnostic: – UJ: Dorsal bone atrophy – LJ: Sufficient bone volume – Bruxist (was not known before treatment)
• Treatment plan: – LJ: 6 implants, delayed loading, implant supported bridge – UJ: 4 implants, 2 long implants with pterygoid anchorage, delayed loading, implant supported bridge
Chronology • • • •
03/01/2002: 09/07/2002: 17/11/2008: 22/11/2010:
Implant placement UJ and LJ Second stage FU 6 years FU 8 years
Follow-up 17/11/2008 6 years follow-up after several teeth fractures and 1x bridge loosening
03/01/2002: Implant surgery UJ and LJ
27/08/2002: Try-in
27/08/2002: Try-in
17/11/2008: follow up 6 years
Follow-up 8 years 22/11/2010 Bridge lossening: fracture of 3 implants
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
22/11/2010: FU 8 years
SEM
Fatigue fracture of the zygoma implant
Fatigue fracture of the zygoma implant
Fatigue fracture of the zygoma implant
Causes of implantfractures • • • •
Bruxisme 2 piece bridge, no cross-arch stabilization Antagonistic implant supported bridge Direct implant fixation (no abutments used) = a mistake