alexa Permucosal implants combined with iliac crest onlay grafts used in extreme atrophy of the mandible: long-term results of a prospective study.
Dentistry

Dentistry

Dentistry

Author(s): Verhoeven JW, Cune MS, Ruijter J

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Abstract Thirteen patients received an onlay bone-graft augmentation to their severely atrophic mandible in combination with simultaneous implant insertion. This treatment modality was studied in a long-term prospective clinical and radiographic study. A reproducible measurement method, consisting of oblique lateral cephalometric radiographs, in combination with an image analysis system, was used to accurately assess the graft resorption rate. On average, 51\% (95\% confidence interval 42-61\%) of the grafted bone height remained after 10-11 years. Resorption of the graft occurred mainly during the first years and showed a marked degree of individual variance. In the following years, the resorption rate followed a predictable pattern in most of our patients. Ventral and dorsal sites exhibited a similar degree of resorption. Peri-implantitis occurred in nine patients. Ten muco-gingival surgical interventions were necessary in four of these nine patients. No implants were lost and 12 patients indicated that they were satisfied. It is concluded that the described surgical technique should be used on stringent indication only, and alternative techniques are discussed. This article was published in Clin Oral Implants Res and referenced in Dentistry

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