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Abstract : Managing oronasal fistulae presents challenges for both patients and surgeons, with variations in defect size and surgical approaches. Fistulae are classified based on size and location, and the anteriorly based lingual flap is a preferred choice due to patient acceptance and adequate blood supply to the tongue. Ensuring flap stability is crucial for successful fistula closure. Various methods, such as suturing, splints, arches, and wire stabilization of the tongue sides, as well as gingiva and teeth suturing, have been employed for flap stabilization. This study aims to assess the effectiveness of stabilizing the anteriorly based lingual flap by suturing the tongue tip to the upper lip mucosa for closing oronasal fistulae. A clinical study design was implemented to achieve the research objective. The sample comprised 12 patients with anterior oronasal fistulae who underwent the surgical procedure for evaluating the efficacy of lingual flap stabilization. Preoperative consultations, including blood tests and medical assessments, were conducted. The surgical technique, encompassing incision, dissection, and suturing procedures, was thoroughly described. Various surgical instruments were employed during the procedure. The study involved 12 patients, including 7 males (58.2%) and 5 females (41.7%). Analysis of the data, presented in tables, focused on the presence of fistulae and the healing process. No significant differences were observed between genders regarding the presence of fistulae or successful closure. Furthermore, there were no significant variations in patient age or fistula diameter among the different groups. Suturing the tip of the tongue to the upper lip mucosa for stabilizing the anteriorly based lingual flap proves to be an effective technique for closing oronasal fistulae.