Clinical application of a shape memory implant abutment system.

An innovative abutment system has recently been developed to address the well-known limitations of screw- and cement-retained implant restorations. This abutment system offers retrievability by replacing the cement layer with a precision-engineered nickel-titanium sleeve that switches between shapes that lock and unlock the prosthesis. The avoidance of cement precludes cement-related periimplant complications, while the elimination of occlusal screw access holes may enable predictable control over occlusion and improve the structural integrity of the prosthesis. By eliminating the need for cement clean up, occlusal access closure, and occlusal adjustments after insertion, the dentist is afforded more time to attend to the patient's general needs. This paper describes the design rationale for and clinical treatment using this novel abutment system.

[1]  Sang-Choon Cho,et al.  Screw Loosening for Standard and Wide Diameter Implants in Partially Edentulous Cases: 3- to 7-Year Longitudinal Data , 2004, Implant dentistry.

[2]  G. Chaushu,et al.  Long-term outcome of cemented versus screw-retained implant-supported partial restorations. , 2011, The International journal of oral & maxillofacial implants.

[3]  T. Wilson.  The positive relationship between excess cement and peri-implant disease: a prospective clinical endoscopic study. , 2009, Journal of periodontology.

[4]  J. Wennström,et al.  Survival and complication rates of implant-supported fixed partial dentures with cantilevers: a systematic review. , 2009, Clinical oral implants research.

[5]  A. Pelton,et al.  Optimisation of processing and properties of medical grade Nitinol wire , 2000 .

[6]  G. Byrne.  Fundamentals of Implant Dentistry , 2014 .

[7]  C J Goodacre,et al.  Clinical complications of osseointegrated implants. , 1999, The Journal of prosthetic dentistry.

[8]  U. Obst,et al.  Cement-associated peri-implantitis: a retrospective clinical observational study of fixed implant-supported restorations using a methacrylate cement. , 2014, Clinical oral implants research.

[9]  Balloon Angioplasty versus Implantation of Nitinol Stents in the Superficial Femoral Artery , 2006 .

[10]  C. Goodacre,et al.  Clinical complications with implants and implant prostheses. , 2003, The Journal of prosthetic dentistry.

[11]  A. Khraisat,et al.  Multicenter retrospective study of cement-retained implant-supported anterior partial prostheses: success and restoration evaluation. , 2008, The International journal of oral & maxillofacial implants.

[12]  F. Watanabe,et al.  Analysis of stress distribution in a screw-retained implant prosthesis. , 2000, The International journal of oral & maxillofacial implants.

[13]  Mark J Gervais,et al.  A rationale for retrievability of fixed, implant-supported prostheses: a complication-based analysis. , 2007, The International journal of prosthodontics.

[14]  Thomas Gerds,et al.  Technical complications of implant-supported fixed partial dentures in partially edentulous cases after an average observation period of 5 years. , 2007, Clinical oral implants research.