A clinical evaluation of the zygoma fixture: One year of follow-up at 16 clinics

A clinical evaluation of the zygoma fixture: One year of follow-up at 16 clinics
September 2004
Jan-Michael Hirsch, DDS, PhD *
Lars-Olof ?Òhrnell, DDS, PhD ÇƒÜ
Patrick J. Henry, BDSc, MSD Çƒ?
Lars Andreasson, MD, PhD ¨?
Per-Ingvar Br?ïnemark, MD, PhD ?
Matteo Chiapasco, MD ¨?
G??ran Gynther, DDS, PhD #
Kaj Finne, DDS **
Kenji W. Higuchi, DDS, MS ÇƒÜÇƒÜ
Sten Isaksson, DDS, MD, PhD Çƒ?Çƒ?
Karl-Erik Kahnberg, DDS, PhD ¨?¨?
Chantal Malevez, MD, DDS ??
Friedrich W. Neukam, MD, DMD, PhD ¨?¨?
Edward Sevetz Jr, DMD ##
Juan P. Urgell, MD, DDS ***
G??ran Widmark, DDS, PhD ÇƒÜÇƒÜÇƒÜ
Pia Bolind, DDS Çƒ?Çƒ?Çƒ? *
Journal of Oral and Maxillofacial Surgery Online
Abstract
Purpose To evaluate treatment outcome with Zygoma fixtures (Nobel Biocare, G??teborg, Sweden) with regard to fixture survival, patient satisfaction, and function of prosthesis replacement.
Materials and methods The treatment outcome of 76 patients treated with 145 Zygoma fixtures at 16 centers was evaluated. PatientÇƒÙs and dentistÇƒÙs evaluations of the functional and aesthetic outcome of the treatment were assessed at delivery of prosthesis and at the 1-year follow-up visit. At the 1-year follow-up visit, the status of the peri-implant mucosa around the abutments and the amount of plaque were registered.
Results Sixty-six of the 76 patients, with 124 Zygoma fixtures supporting the prosthetic restorations, were evaluated at the 1-year follow-up. The overall survival rate for the Zygoma fixtures was 97.9% after 1-year of follow-up. Eighty percent of the patients were fully satisfied with both aesthetic and functional outcome at the time of prosthetic insertion and at the 1-year follow-up. All reported data from the dentists, with the exception of one restoration with several abutment screw loosenings, scored from acceptable to excellent for the aesthetic and functional outcome of the treatment. The status of peri-implant mucosa was recorded as normal in approximately 60% of the sites. Plaque, when present, was more often detected on the palatal surfaces compared with the buccal surfaces.
Conclusion This 1-year follow-up of Zygoma fixtures has shown good results with an acceptable number of minor complications and a majority of satisfied patients.
Publishing and Reprint Information
*Professor and Chairman, Department of Surgical Sciences, Oral and Maxillofacial Surgery, Uppsala University Hospital, Uppsala, Sweden
ÇƒÜHead, Department of Oral and Maxillofacial Surgery, Bor?ïs County Hospital, Bor?ïs, Sweden
Çƒ?Private Practice, The Br?ïnemark Center, Western Australia, Australia
¨?Associate Professor, The ENT Clinic, Malm?? University Hospital, Malm??, Sweden
?Professor, Br?ïnemark Osseointegration Center, G??teborg, Sweden
¨?Head and Chairman, Unit Oral Surgery, Dental Clinic, San Paolo Hospital, University of Milan, Milan, Italy
#Private Practice, Specialist Center for Dental Implants, Nacka, Sweden; Associate Professor, Department of Oral and Maxillofacial Surgery, Huddinge University Hospital, Karolinska Institute, Karolinska, Sweden
**Head, Department of Oral and Maxillofacial Surgery, Vaasa Central Hospital, Vaasa, Finland
ÇƒÜÇƒÜDirector, Spokane Center for Tissue Integrated Reconstruction, Valley Hospital and Medical Center, Spokane, WA
Çƒ?Çƒ?Maxillofacial Unit, L?ßnssjukhuset, Halmstad, Sweden
¨?¨?Professor and Chairman, Department of Oral and Maxillofacial Surgery, Faculty of Odontology, The Sahlgrenska Academy, G??teborg University, G??teborg, Sweden
??Professor at the Faculty of Medicine and Associated Chief at the Academic Hospital Erasme, Universit?© Libre de Bruxelles, Bruxelles Belgium
¨?¨?Full Professor and Head, Department of Oral and Cranio-Maxillofacial Surgery at Erlangen-Nuremberg University, Erlangen, Germany
##Private Practice, Orange Park, FL
***Private Practice, Br?ïnemark Osseointegration Center, Barcelona, Spain
ÇƒÜÇƒÜÇƒÜConsultant, Head, Department of Oral and Maxillofacial Surgery, M??lndal Hospital, M??lndal, Sweden; Associate Professor, Department of Oral and Maxillofacial Surgery, Faculty of Odontology, G??teborg University, G??teborg, Sweden
Çƒ?Çƒ?Çƒ?Clinical Research Manager, Nobel Biocare, G??teborg, Sweden
*Address correspondence and reprint requests to Dr Bolind: Nobel Biocare AB, PO Box 5190, Bohusgatan 15, 402 26 G??teborg, Sweden;
Email address: pia.bolind@nobelbiocare.com (Pia Bolind)
Copyright ¨© 2004 by American Association of Oral and Maxillofacial Surgeons
doi: 10.1016/j.joms.2004.06.030
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