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Pre-Surgical Risk Assessment for Sinus Membrane Perforation: A Retrospective Cohort Study.

Shale Ninneman^1,2, Shing-Zeng Dung^3,4, Tiziano Testori⁵

¹Private Practice, Marysville, Washington, USA.

Clinical Oral Implants Research

|October 9, 2025

Summary

This summary is machine-generated.

This study found residual bone height (RBH) and age are key predictors of sinus membrane perforation (SMP) during sinus floor elevation (LSFE). A 3mm RBH threshold better predicts SMP risk than the original tool.

Keywords:

dental implants intraoperative complications oral and maxillofacial surgery oral implants/implantology sinus floor augmentation

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Area of Science:

Oral and Maxillofacial Surgery
Dental Implantology
Radiology

Background:

Sinus membrane perforation (SMP) is a complication during lateral-window sinus floor elevation (LSFE).
Existing risk assessment (RA) tools require validation for predicting SMP events.

Purpose of the Study:

To validate an existing RA tool for predicting SMP during LSFE.
To identify key risk factors for SMP during LSFE.

Main Methods:

A multi-center study analyzed CBCT images and health records of 113 patients undergoing LSFE.
Logistic regression and CART analyses were used to evaluate the RA tool and identify risk factors.

Main Results:

Residual bone height (RBH) was strongly correlated with SMP risk; a 1mm increase in RBH decreased SMP odds by 23.7%.
A 3mm RBH cut-off improved SMP risk stratification compared to the original 4mm threshold.
Age was also identified as a potential risk factor for SMP.

Conclusions:

RBH and age are significant predictors of SMP risk in LSFE procedures.
Optimal thresholds for predicting SMP were identified as 3.02mm for RBH and 55.5 years for age.
The existing RA tool could not be fully validated in this study.