Association Between Sinus Membrane Thickness and Membrane Perforation in Lateral Window Sinus Augmentation: A...

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Anatomical Studies

Background:

• Sinus augmentation using the lateral window technique is a common procedure in implant dentistry.
• The Schneiderian membrane's integrity is crucial for successful sinus augmentation.
• Factors influencing Schneiderian membrane perforation require further investigation.

Purpose of the Study:

• To investigate the association between Schneiderian membrane thickness and the incidence of membrane perforation during lateral window sinus augmentation.
• To determine if residual bone height is a predictive factor for membrane perforation.

Main Methods:

• Retrospective review of 551 patients undergoing lateral sinus augmentation.
• Analysis of preoperative cone-beam computed tomography (CBCT) scans for membrane thickness and residual bone height.
• Statistical evaluation using the Mann-Whitney U test (P <0.05) on 167 eligible patients.

Main Results:

• A statistically significant difference in mean membrane thickness was observed between the perforation (0.84 ± 0.67 mm) and non-perforation (2.65 ± 4.02 mm) groups (P <0.001).
• Mean residual bone height was significantly lower in the perforation group (2.78 ± 1.37 mm) compared to the non-perforation group (4.21 ± 2.09 mm) (P <0.001).

Conclusions:

• Thinner Schneiderian membranes are significantly associated with a higher risk of perforation during lateral window sinus augmentation.
• Reduced residual bone height is also a significant risk factor for Schneiderian membrane perforation in this patient cohort.