A sinus lift, also known as a sinus augmentation, is a surgical procedure that aims to increase the amount of bone in the upper jaw (maxilla) to support dental implants. This is particularly necessary when the existing bone structure is insufficient, often due to long-term tooth loss or bone resorption. This book discusses the indications for sinus augmentation, the different surgical techniques and the post operative management. It also discusses the benefits and the risks associated with such procedures.