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Comparison of Lingually Based and Buccally Based Triangular Flap Designs on Postoperative Morbidity Following
Zeinab Y F Abdelsamie1, Yasser N ElHadidi2, Moustafa Taha2
1Oral and Maxillofacial Surgery, Faculty of Dentistry, Sinai University.
The Journal of Craniofacial Surgery
|February 25, 2026
Summary
Comparing lingually based and buccally based triangular flap designs for impacted wisdom tooth removal, this study found no significant differences in postoperative pain, swelling, or trismus. Both flap designs are comparable for impacted third molar surgery.
Area of Science:
- Oral and Maxillofacial Surgery
- Surgical Techniques
- Patient Outcomes
Background:
- Surgical flap design is crucial for minimizing postoperative morbidity after impacted wisdom tooth removal.
- Understanding the comparative effects of different flap designs is essential for optimizing surgical outcomes.
Purpose of the Study:
- To compare the postoperative morbidity associated with lingually based versus buccally based triangular flap designs.
- To evaluate differences in pain, swelling, and trismus between the two flap designs following impacted mandibular third molar extraction.
Main Methods:
- A randomized study involving 40 patients undergoing impacted mandibular third molar removal.
- Patients were allocated to either a lingually based or buccally based triangular flap group.
- Postoperative outcomes including pain, maximum mouth opening, facial swelling, and trismus were assessed on day seven.
Main Results:
- No statistically significant differences were observed between the lingually based and buccally based flap groups.
- Both flap designs yielded comparable results regarding postoperative pain intensity.
- Facial swelling, maximum mouth opening, and incidence of trismus were similar between the two groups.
Conclusions:
- Both lingually and buccally based triangular flap designs are equally effective in managing short-term postoperative morbidity.
- The choice between lingually and buccally based triangular flaps does not significantly impact patient outcomes after impacted third molar surgery.

