A clinical evaluation of the Zygoma fixture: one year of follow-up at 16 clinics.
OBJECTIVE
To evaluate treatment outcome with Zygoma fixtures (Nobel Biocare, Göteborg, Sweden) with regard to fixture survival, patient satisfaction, and function of prosthesis replacement.


METHODS
The treatment outcome of 76 patients treated with 145 Zygoma fixtures at 16 centers was evaluated. Patient's and dentist's 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.


CONCLUSIONS
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.
Department of Surgical Sciences, Oral and Maxillofacial Surgery, Uppsala University Hospital, Sweden.
Jan-Michael
JM
Hirsch
Lars-Olof
LO
Ohrnell
Patrick J
PJ
Henry
Lars
L
Andreasson
Per-Ingvar
PI
Brånemark
Matteo
M
Chiapasco
Göran
G
Gynther
Kaj
K
Finne
Kenji W
KW
Higuchi
Sten
S
Isaksson
Karl-Erik
KE
Kahnberg
Chantal
C
Malevez
Friedrich W
FW
Neukam
Edward
E
Sevetz
Juan P
JP
Urgell
Göran
G
Widmark
Pia
P
Bolind
D000328:Adult; D000368:Aged; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D015921:Dental Implants / Q000009:adverse effects; D003773:Dental Plaque / Q000145:classification; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003779:Denture Design; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011446:Prospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome; D015050:Zygoma / Q000601:surgery*
D015921:Dental Implants