Maxillary sinus membrane perforation rate utilizing osseodensification-mediated transcrestal sinus floor elevation: A...

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Regenerative Dentistry

Background:

• Transcrestal sinus floor elevation (TSFE) is a common procedure to augment the maxillary sinus.
• Osseodensification (OD) offers a bone-preserving approach for TSFE.
• Understanding membrane perforation risks is crucial for successful outcomes.

Purpose of the Study:

• To evaluate the membrane perforation rate during TSFE using osseodensification (OD) burs.
• To identify risk factors associated with sinus membrane perforations in TSFE.

Main Methods:

• A multicenter, cross-sectional clinical study involving 621 patients.
• Standardized TSFE protocol using OD burs across six centers.
• Analysis of factors including residual bone height (RBH), tooth region, and bone type.

Main Results:

• A low sinus membrane perforation rate of 7.31% (49/670 sites) was observed.
• Residual bone height (RBH) ≤3 mm was a significant risk factor for perforation.
• RBH between 3-5 mm also increased perforation risk; tooth region and implant site were not significant factors.

Conclusions:

• Osseodensification (OD) drilling for TSFE demonstrates a low membrane perforation rate.
• Severe posterior maxillary atrophy, indicated by low RBH, is a primary risk factor for increased perforation during TSFE.