Vertical GBR LPRF Block vs. Autogenous Bone With DBBM

Inclusion Criteria: * Males or females, with ASA I or II, between 18 and 80 years old * 2 implant sites requiring vertical bone augmentation prior to implant placement * Both sites in the same jaw * Good general health as documented by self-assessment Exclusion Criteria: * Any systemic medical condition that could interfere with the surgical procedure, planned treatment or healing of the patient * Immunosuppression, Diabetes, Anticoagulation or Antiaggregatory medication. * Current pregnancy or breast feeding/ lactating at the time of recruitment. * Radiotherapy or Chemotherapy in head and neck area. * Intravenous and oral bisphosphonate therapy. * Smoking * Unwillingness to return for the follow-up examination. * Conditions or circumstances, in the opinion of the investigator, which could represent a general contra-indication for surgical procedure or would prevent completion of study participation or interfere with analysis of study results, such as history of non-compliance, or unrealistic expectations * Presence of osseous pathologies, that might interfere with normal wound healing * Presence of oral lesions (such as ulceration, malignancy) * Local inflammation, including untreated periodontitis * Patients with inadequate oral hygiene or unmotivated for adequate home care