Modified Submucosal Connective Tissue Flap Technique for Oroantral Fistula Closure.
Mustafa Ayhan1, Zeynep Afra Akbıyık Az1
1Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Istanbul Univesity, Istanbul, Turkey.
Journal of Maxillofacial and Oral Surgery
|November 27, 2025
Summary
A novel bilayered closure technique effectively treats oroantral fistulas. This method enhances flap stability and healing predictability, offering a reliable surgical solution for complex cases.
Area of Science:
- Oral and Maxillofacial Surgery
- Surgical Innovation
Background:
- Oroantral fistulas present significant surgical challenges.
- Successful closure requires effective techniques for long-term healing.
Purpose of the Study:
- To introduce a modified submucosal connective tissue flap technique.
- The aim is to improve closure stability and healing predictability for oroantral fistulas.
Main Methods:
- Excision of the fistula and sinus debridement were performed.
- A buccal advancement flap was combined with a palatal connective tissue graft, secured with sutures to bone perforations.
- A bilayered closure was achieved by advancing the buccal flap.
Main Results:
- The technique facilitated tension-free closure with enhanced flap stability.
- Reduced donor site morbidity was observed.
- Uneventful healing and complete mucosal regeneration occurred within one month.
Conclusions:
- The bilayered closure technique offers a reliable and predictable solution for oroantral fistulas.
- This method is particularly beneficial for edentulous or anatomically compromised patients.
- Mechanical anchorage of the graft combined with the flap ensures successful outcomes.
