"Tunnel Flap vs Trapezoidal Flap for Lateral Sinus Lift"

"The surgical procedure will involve the following steps:~* A single vertical anterior incision will be made, at least 10 mm mesially to the expected outline of the bony window.~* A full-thickness flap will be carefully elevated to expose the lateral wall of the maxillary sinus.~* A trap door will be created in the lateral wall of the maxillary sinus using either a dedicated piezosurgical insert or a straight handpiece with a 3mm round diamond bur.~* The door will be removed.~* The sinus membrane will be gently elevated using various-shaped curettes until it becomes completely detached from the lateral, inferior, and medial walls of the sinus.~* The maxillary sinus will be filled with a heterologous bone graft with a well-documented efficacy.~* The flaps will be meticulously sutured."

"The surgical procedure will involve the following steps:~* A horizontal incision is made on the top of the alveolar ridge, along with two additional releasing incisions in the mesial and distal regions.~* A full-thickness flap will be carefully elevated to expose the lateral wall of the maxillary sinus.~* A trap door will be created in the lateral wall of the maxillary sinus using either a dedicated piezosurgical insert or a straight handpiece with a 3mm round diamond bur.~* The door will be removed.~* The sinus membrane will be gently elevated using various-shaped curettes until it becomes completely detached from the lateral, inferior, and medial walls of the sinus.~* The maxillary sinus will be filled with a heterologous bone graft with a well-documented efficacy.~* The flaps will be meticulously sutured."