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The maxillary sinus is known for its thin floor and close proximity to the posterior maxillary (upper) teeth. [1] [6] The extraction of a maxillary tooth (typically a maxillary first molar which lies close to the lowest point of antral floor although any premolar or molar can be affected) is the most common cause of an OAC (which can then ...
Odontogenic sinusitis is a type of sinusitis (inflammation of the sinuses), specifically caused by dental infections or procedures. [1] Comprising approximately 10-12% of all chronic sinusitis cases, this condition primarily affects the maxillary sinus, which is in close proximity to the upper teeth. [2]
There is a bony floor of the sinus, dividing the tooth socket from the sinus itself. This bone can range from thick to thin, from tooth to tooth, from patient to patient. In some cases it is absent and the root is, in fact, in the sinus. At other times, this bone may be removed with the tooth, or may be perforated during surgical extraction.
Expansion of the cyst causes erosion of the floor of the maxillary sinus. As soon as it enters the maxillary antrum, the expansion rate increases due to available space for expansion. Performing a percussion test by tapping the affected teeth will cause shooting pain. This is often clinically diagnostic of pulpal infection. [citation needed]
The sinus communicates through an opening into the semilunar hiatus on the lateral nasal wall. [citation needed] The medial wall is composed primarily of cartilage. [1] [3] On the posterior wall are the alveolar canals, transmitting the posterior superior alveolar vessels and nerves to the molar teeth. [citation needed]
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 ...
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