There are many ways to litf the maxillary sinus mucosa in order to obtain adequate bony conditions prior to implantation. Among these "sinus graft" and "sinus lift", are the methods of raising the sinus’ mucous membrane practiced for 25 years. But with increasing demands from both patients and surgeons research into new treatment techniques is in progress. Due to the fact that the sinus lifting procedure in a traditional way is unpleasant for the patient, less invasive techniques to improve the conditions of the bone before the prosthetic treatment are being researched. In this paper sinus physiolift and crestal approach sinus kit methods are presented as an alternative, atraumatic hydrodynamic techniques of sinus lift. The aim of the study is to present the hydrodynamic technique of sinus lift on basis of available literature and our own observations. Among the 24 patients qualified for sinus lift, the procedure was performed by means of hydrodynamic technique. The use of closed hydrodynamic methods of sinus lift has improved the bone conditions within the maxillary alveolar process and permitted planned simultaneous implantation.

Key words: maxillary sinus, dental implants, oral surgical procedures, preprostetic..