Objective The purpose of this study is to compare the outcomes of using auto-transplanted tooth and flap for repairing sinus perforation after tooth extraction. The aim is to provide a new reference for selecting appropriate repair methods for maxillary sinus perforation.

Methods and materials This study involved 19 patients with sinus perforation who underwent treatment at the Department of Oral Surgery, Hospital of Stomatology Wuhan University, from March 2021 to September 2022. The study included two groups: a test group with 11 cases where perforation of the maxillary sinus mucosa greater than 5 mm was found during autologous tooth transplantation, and a control group with 8 cases where maxillary sinus mucosa perforation greater than 5 mm was found during tooth extraction. Clinical examination and radiographic examination were taken at 2 weeks, 1, 3, 6, and 12 months post-surgery of two groups. The two-year survival probability of the AT group was assessed using Kaplan-Meier survival analysis.

Results The success rate of the auto-transplantation (AT) group was 72.7% (8/11), while the success rate of the flap transfer (FT) group was 100%. Upon analysis, it was found that the survival probability of AT group was significantly lower when the gingival index(GI) score was 2 (51.8%), in comparison to when it was 0 or 1 (100%).

Conclusion The study findings demonstrated that the utilization of auto-transplanted teeth yielded a favorable outcome in restoring maxillary sinus perforation, suggesting its viability as a potential option.

The authors have declared no competing interest.

This study did not receive any funding

I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.

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The details of the IRB/oversight body that provided approval or exemption for the research described are given below:

The study was approved by the Institutional Review Board of the Hospital of Stomatology Wuhan University

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All data produced in the present study are available upon reasonable request to the authors All data produced in the present work are contained in the manuscript