The Potential of the Crestal Approach

Abstract

Since the development of the crestal sinus lift, there has been a distinction between the crestal approach and the lateral approach in clinical practice. Most treatments are based on the vertical width of the existing bone, but the author has adopted the crestal approach even in cases with a narrower existing bone width to perform a less invasive surgery. However, the success rate for patients with less than 3 mm of existing bone was low due to adhesion of Schneider's membrane to the maxillary sinus base bone. However, the success rate was low in cases where the existing bone was less than 3 mm due to adhesion of Schneider's membrane to the maxillary sinus floor bone, etc. In cases where the existing bone was small, a high success rate was observed by forming a slit window in the crestal area and detaching Schneider's membrane with an instrument. If the success rate is high but the success rate of sinus lift is not 100%, the recovery method should be enhanced. This article reports four recovery methods for problems such as perforation of Schneider's membrane in the crestal approach, and introduces a cleaning method for maxillary sinusitis that may occur after perforation of Schneider's membrane, which is a common problem during sinus lift.