Cross-pinning: the philosophy of retrievability applied practically to fixed, implant-supported prostheses.
Biologic and technical complications are widely reported in the dental literature and often compromise the functional and/or aesthetic features of fixed, implant-supported prostheses. Managing complications without damaging or destroying a restoration is an obvious advantage of implant-based dentistry where the option of prosthetic retrievability is almost always available. The technique of cross-pinning uses a transverse screw to secure a prosthesis to a milled implant abutment, allowing prosthetic retrievability irrespective of dental implant alignment. This study presents guidelines for cross-pinning implant-supported prostheses based on resistance form, screw mechanics and natural tooth contours. The technical aspects of cross-pinning are also discussed using examples from four implant systems.
Gervais
M J
MJ
Prosthodontist in private practice, Gold Coast, Queensland. mark@coynedental.com.au
Hatzipanagiotis
P
P
Wilson
P R
PR
D000180:Acrylic Resins; D000044:Dental Abutments; D003722:Dental Alloys; D015921:Dental Implants; D017267:Dental Prosthesis Design / Q000379:methods; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003780:Denture Repair; D006801:Humans; D013314:Stress, Mechanical; D013499:Surface Properties; D013674:Technology, Dental
D000180:Acrylic Resins; D003722:Dental Alloys; D015921:Dental Implants