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An oroantral fistula (OAF) is an epithelialized oroantral communication (OAC), which refers to an abnormal connection between the oral cavity and the antrum. [1] The creation of an OAC is most commonly due to the extraction of a maxillary tooth (typically a maxillary first molar ) which is closely related to the antral floor.
The palatal lift however, is used when there is not enough palatal movement. It raises the palate and reduces the range of movement necessary to provide adequate closure to separate the nasal cavity from the oral cavity. Speech bulbs and palatal lifts aid in velopharyngeal closure and do not obturate a fistula. A speech bulb, yet another type ...
An OAC that is smaller than 2mm can heal spontaneously i.e. closure of the opening. [11] Those that are larger than 2mm have a higher chance of developing into oro-antral fistula (OAF). [11] The passage is only defined as an OAF if it is persistent and lined by epithelium. [11]
Each person's treatment schedule is individualized. The table below shows a common sample treatment schedule. The colored squares indicate the average timeframe in which the indicated procedure occurs. In some cases, this is usually one procedure, for example lip repair. In other cases, it is an ongoing therapy, for example speech therapy.
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If the membrane is perforated, however, it is a "sinus communication". These two conditions are treated differently. In the event of a sinus communication, the dentist may decide to let it heal on its own, or, may need to surgically obtain primary closure—depending on the size of the exposure and the likelihood of the patient to heal.
Velopharyngeal insufficiency is a disorder of structure that causes a failure of the velum (soft palate) to close against the posterior pharyngeal wall (back wall of the throat) during speech in order to close off the nasal cavity during oral speech production.
Oro-antral fistula if associated with sinusitis. [7] Acute Bacterial Rhinosinusitis. Though it is indicated only in severe cases not as a regular treatment. [8] It can be also used as diagnostic procedure for: Carrying out culture and sensitivity test if the returning fluid is mucopurulent or purulent in Chronic Sinusitis. [9]