جستجوی مقالات مرتبط با کلیدواژه "oroantral fistula" در نشریات گروه "پزشکی"

Oroantral Fistula (OAF) is a pathologic and epithelialized path between the oral cavity and the maxillary sinus. Various reasons can lead to its development, the most common of which is the extracion of upper molar teeth. Any condition that leads to traumatized tooth extraction or conditions that make tooth extraction more difficult, such as: improper use of an dental elevator, teeth with long roots near the sinus, dental infections, etc., increase the probability of this problem.The most common age of occurrence of OAF is between 30 & 60 years old.most studies suggest that smaller fistulas have a chance of healing spontaneously, but larger types and those that persist for a longer period of time usually do not heal without intervention. It can lead to uncomfortable side effects such as pain, sinusitis, air escaping from the mouth to the nose, and even a change in the person's voice and overall discomfort in the patient. Various surgical and non-surgical treatments have been proposed for the management of OAF. Non- surgical treatments include blocking the area by placing different materials inside defect, and surgical treatments include closing the area with local and regional flaps or in combination with Autografts and Allografts, etc. The purpose of this review article is to investigate the etiology factors of OAF, the prevalence rate and the ways of its management by various surgical and non- surgical treatments.

An oro-antral fistula (OAF) creates a passage for oral microbes into maxillary sinus with numerous possible complications. This retrospective study evaluates the success of three different surgical techniques of OAF repair. Records of patients that were treated for OAF repair were retrieved and reviewed. Data recorded were patients’ age, gender, etiology, size, location, duration, and method of repair. According to the surgical technique used to repair the OAF, patients were divided into three groups including buccal flap, palatal flap, and buccal fat pad. All of the patients were locally anesthetized with 2% lidocaine and 1/100000 or 1/80000 epinephrine. Then the edges of the fistula were excised and fistula wall was dissected in a stitched layer by three surgical methods. The three groups were compared concerning the success or failure of surgical technique based on complete closure of OAF after three months postoperatively. 147 patients (116 males and 31 females) with adequate records were included in the study. The surgical methods used in patients were, buccal flap in 59 (40.1%), buccal fat pad in 42 (40.8%), and palatal flap in 28 (19%) individuals. Success rates of these techniques were significantly different. Buccal fat pad was the most successful flap (98.3%), followed by buccal flap (89.8%), and palatal flap (85.7%). The most common cause of OAF in this group of patients was dental extraction. Buccal fat pad flap seems to be one of the best treatments for the closure of OAF lager than 5 mm.