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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.
An interim palatal obturator is used post-palatal surgery. This obturator aids in closing the remaining fistula and is used when no further surgical procedures are planned. It must be frequently revised. A definitive obturator is used when further rehabilitation is not possible for the patient and is intended for long-term use.
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]
The opening can be enlarged by hayek or kerrison punch forceps to produce hole sufficiently large to provide access for example to allow removal of sinus mucosa or introduction of an endoscope and instruments. Kerrison punch 02. The entire lining of sinus is dissected and removed as the success of the operation in chronic rhinosinusitis ...
Antral lavage is a largely obsolete [citation needed] surgical procedure in which a cannula is inserted into the maxillary sinus via the inferior meatus to allow irrigation and drainage of the sinus. [1] It is also called proof puncture, as the presence of an infection can be proven during the procedure.
A TIPS procedure decreases the effective vascular resistance of the liver through the creation of an alternative pathway for portal venous circulation. By creating a shunt from the portal vein to the hepatic vein, this intervention allows portal blood an alternative avenue for draining into systemic circulation.
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.
The procedure leaves minimal post-operative discomfort. It provides limited mobility of flap and is unsuitable for grafting. [6] [2] Split thickness flap involves sharp cutting of tissues and leaving the underlying periosteum intact. The procedure prevents exposure dehiscence and allows good blood supply for grafting. It does not provide access ...