[Use of alveolar bone mucosa-periosteal bone flap in dental implantation]

To introduce a method of increasing the width of alveolar bone. The patient, who needed dental implantation and had narrow alveolar bone, was selected. The preparation of mucosa-periosteal bone flap included two surgeries. The first surgery was corticotomy, which made a square cortex cut on narrow alveolar bone region. The second surgery was performed four weeks after the first one, which split the alveolar bone and inserted implants. Artificial bone and/or autologous bone was filled between inner and outer bone plate, and collagen membrane and platelet-rich fibrin membrane were used to cover the wound. This technique maintained the blood supply of labial(buccal) alveolar bone completely. Artificial bone and/or autologous bone graft contacted with cancellous bone directly and led to better bone growth and bone formation. Alveolar bone mucosa-periosteal bone flap can maintain the labial(buccal) alveolar bone effectively and avoid bone resorption.