Twenty four patients with bone resorption on the anterior maxilla will be divided into two groups with different kinds of grafting: bone block associated with particulated biomaterial and particulated mixture of autogenous bone and biomaterial stabilized by collagen membrane and pins. The techniques will be compared according to volume gain, quality of graft osseointegration, implant survival and maintenance of the level of soft tissues.
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vertical gain
Timeframe: 9 months
horizontal gain
Timeframe: 9 months
implants survival
Timeframe: 24 months
soft tissue volume
Timeframe: 24 months