Crestal Sinus Floor Augmentation Using Hydraulic Pressure and Vibrations: A Retrospective Single Cohort Study

Area of Science:

• Oral and Maxillofacial Surgery
• Periodontology
• Dental Implantology

Background:

• Sinus floor augmentation is a common procedure to increase bone height in the posterior maxilla for dental implant placement.
• Minimally invasive techniques aim to reduce surgical trauma and improve patient outcomes.
• The use of hydraulic pressure and vibrations for sinus membrane elevation is a novel approach.

Purpose of the Study:

• To evaluate the sinus membrane perforation rate associated with minimally invasive crestal sinus floor augmentation.
• To determine the implant survival rate following this augmentation technique.
• To assess the safety and efficacy of hydraulic pressure and vibration for sinus elevation.

Main Methods:

• Retrospective single cohort study of patients undergoing minimally invasive sinus floor augmentation (2007-2015).
• Sinus membrane elevation achieved using physiologic saline at 1.5 bar, with fluid vibration to aid separation.
• Endpoints included sinus membrane perforation and implant survival rates.

Main Results:

• The hydraulic pressure and vibration technique was used in 156 patients; 184 augmentations and implants were performed in 149 patients after exclusions.
• The overall sinus membrane perforation rate was 8.9% (17/191).
• Implant survival rates at 1, 3, and 5 years were 94.4%, 87.7%, and 87.7%, respectively, with no severe perioperative complications.

Conclusions:

• Minimally invasive crestal sinus augmentation using hydraulic pressure and vibration is a viable technique.
• The method demonstrates a sinus membrane perforation rate below 10%.
• The technique achieves favorable implant survival rates of approximately 90%.