Sixteen patients with horizontal deficiencies in the posterior mandible were treated with "the Open Membrane Technique" (OMT). Dense PTFE membranes covering an allograft biomaterial were used without any attempt to passivate the flap. Flap closure with an open wound (membrane exposure) was monitored weekly for up to 6w at the time of membrane removal. At implant placement, soft and hard tissue gains were assessed clinically and radiographically. Bone cores were harvested for histological analysis from the implant preparation sites

Inclusion Criteria:

Healthy adults Free of any systemic disease affecting bone metabolism Highly compliant Good oral hygiene Willing to sign informed consents prior to their inclusion

Exclusion Criteria:

Untreated periodontal disease Heavy smokers Excessive alcohol consumption Uncontrolled systemic conditions

Any data will be shared with other researches if it is required or will help conducting further studies.

The data are available at any time