The posterior maxilla is a challenging site for dental implant rehabilitation. Bone quantity in the maxillary posterior edentulous area may be insufficient for dental implant placement because of the presence of the maxillary sinus.several techniques have been proposed to lift the maxillary sinus and augment with bone graft. The bone volume augmentation is expected to result in primary implant stability, promote osseointegration, prevent overloading, and provide long–term implant success.These techniques are called sinus lift procedures. The commonly used sinus lift techniques are lateral and crestal sinus lift. This review aims to focus on crestal sinus lift procedure.