Surgery Skin graft vestibuloplasty prevent relapse by: A Forming a barrier to reattachment of muscle to periosteum B Promoting osteogenesis to establish a bone barrier to loss of sulcus depth C Causing an inhibitory effect on fibroblasts in the underlying tissue D None of the above 💡 Explanation Skin graft vestibuloplasty prevent relapse by: ✓ Correct Answer: A. Forming a barrier to reattachment of muscle to periosteum