Safety of zygomatic bone harvesting: a prospective study of 32 consecutive patients with simultaneous zygomatic bone grafting and 1-stage implant placement.
OBJECTIVE
The purpose of this prospective study was to evaluate the safety of zygomatic bone harvesting and to determine whether a particulated zygomatic bone graft can be used simultaneously with 1-stage dental implants to reconstruct resorbed edentulous alveolar ridges.


METHODS
Altogether, 82 dental implants were placed in 32 patients. Particulated bone grafts harvested from the zygomatic process were used in 72 of the implant sites. The volume of bone harvested, intraoperative complications, morbidity, and complications on follow-up visits were recorded. Implant survival was examined prospectively.


RESULTS
As a harvest site, the zygoma yielded enough bone to complete the reconstructions in each case. The average zygomatic bone graft volume was 0.90 mL (SD 0.30). Perforation of the maxillary sinus occurred at 11 zygomatic sites. None of these perforations led to postoperative problems. No paresthesias or other complications were noted during follow-up examinations. Mean duration of postoperative swelling was 4.5 days, and patients used pain medication for a mean duration of 4 days. After the mean follow-up period of 26.9 months postplacement, 80 of 82 implants were osseointegrated (survival rate 97.6%).


CONCLUSIONS
[corrected] Zygomatic bone is an alternative donor site for bone harvesting with low morbidity. The bone graft yielded is sufficient for use in 2 to 3 implant sites.


CONCLUSIONS
The zygoma was a safe intraoral bone harvesting donor site in this patient population. Further, the use of simultaneous particulated zygomatic bone grafts and 1-stage implant placement appears to be an effective procedure.
Kainulainen
Vesa T
VT
Department of Oral and Maxillofacial Surgery, Institute of Dentistry, University of Oulu and Oulu University Hospital, Oulu, Finland. vesa.kainulainen@oulu.fi
Sàndor
George K B
GK
Carmichael
Robert P
RP
Oikarinen
Kyösti S
KS
D000293:Adolescent; D000328:Adult; D000540:Alveolar Ridge Augmentation / Q000009:adverse effects / Q000379:methods*; D001862:Bone Resorption / Q000534:rehabilitation / Q000601:surgery; D016025:Bone Transplantation; D015921:Dental Implants; D004487:Edema / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007431:Intraoperative Complications; D007575:Jaw, Edentulous / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008443:Maxillary Sinus / Q000293:injuries; D008875:Middle Aged; D016348:Osseointegration; D010149:Postoperative Pain / Q000209:etiology; D011183:Postoperative Complications; D011446:Prospective Studies; D012449:Safety; D016019:Survival Analysis; D020858:Tissue and Organ Harvesting / Q000009:adverse effects / Q000379:methods; D015050:Zygoma / Q000601:surgery*
D015921:Dental Implants