Trapezial Design Technique for Autogenous Bone Graft in Esthetic Zone Implant Treatment.

We report bone augmentation for alveolar bone loss at the bottom of the nasal cavity in conjunction with simultaneous implant placement in the same operative field in the esthetic zone. The patient was a 33-year-old man who was referred to us requesting implant treatment after undergoing tooth extraction (#12) due to root fracture. An examination was performed using cone beam computed tomography (CT) and simulation software. The results indicated insufficient volume of labial bone for the requested procedure, especially at the planned site of the implant neck. Therefore, bone augmentation was performed at the apical site of the implant socket (alveolar bone at the bottom of the nasal cavity). Because the surgical line of the harvest site formed a trapezoidal shape, the procedure was named the "Trapezial Design Technique". Assessment of complications (Barone & Covane classification), success (Albrektsson classification), and observation of labial bone using cone beam CT were performed postoperatively. No com-plications were observed at 27 months after prosthetic treatment. The implant and the tissue surrounding it were in a stable condition. This indicates that this procedure is effective in placing an implant with simultaneous bone augmentation in the esthetic zone.