Abstract
BackgroundAutogenous bone augmentation is the gold standard for the treatment of extended bone defects prior to implantation. Bone augmentation from the zygomatic crest is a valuable option with several advantages, but the current literature for this treatment is scant. The aim of this study was to evaluate the increase in bone volume after locoregional bone augmentation using autogenous bone from the zygomatic alveolar crest as well as the complications and success rate.ResultsAnalysis of the augmented bone volume in seven patients showed a maximum volume gain of 0.97 cm3. An average of 0.54 cm3 of autogenous bone (SD 0.24 cm3; median: 0.54 cm3) was augmented. Implantation following bone augmentation was possible in all cases. Complications occurred in three patients.ConclusionThe zygomatic alveolar crest is a valuable donor site for autogenous alveolar onlay grafting in a locoregional area such as the maxillary front. Low donor site morbidity, good access, and its suitable convexity make it a beneficial choice for autogenous bone augmentation.
Highlights
Autogenous bone augmentation is the gold standard for the treatment of extended bone defects prior to implantation
Local bone defects in the alveolar ridge can be augmented with a high success rate, few complications, and a high survival rate of implants [4]
Design, and setting of the study This retrospective study analysed patients treated with an autogenous bone graft harvested from the zygomatic alveolar crest between January 2015 and June 2018 in the Clinic of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland, in order to evaluate the increase in bone volume achieved by the augmentation as well as the success rate and complications
Summary
Autogenous bone augmentation is the gold standard for the treatment of extended bone defects prior to implantation. Local bone defects in the alveolar ridge can be augmented with a high success rate, few complications, and a high survival rate of implants [4]. Gellrich et al [2], Held et al [10], and Kainulainen et al [11] recommended the zygomatic alveolar crest as an intraoral donor site for local bone augmentation. In the upper jaw, bone grafts harvested from the zygomatic alveolar crest are suitable due to the locoregional harvesting site. It offers easy access and good visibility as well as a suitable morphology due to its convexity [5, 11]
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