Evaluation of Geistlich Fibro-Gide ® and Autogenous Connective Tissue Graft Prior to Orthodontic Maxillary Expansion.

Autogenous Connective Tissue Graft is the current gold standard for soft tissue phenotype modification. This is being compared with a substitute material called Geistlich Fibro-Gide ® for soft tissue phenotype modification before orthodontic treatment. Geistlich Fibro-Gide ® is a porcine, porous, resorbable and volume-stable collagen matrix, designed for soft-tissue regeneration. Surgical flap design will be an envelope for both interventions.