上顎洞壁の術後陥入現象について

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The ultimate postoperative conditions of the maxillary sinus were investigated using polytomographic frontal sections. Linear measurements were performed at 9 points corresponding to the dimensions of the orbit, ethmoid, nasal cavity, maxillary sinus and external face. All the measurements were performed on films obtained from three groups, namely, a preoperative (control) group of 36 cases of chronic sinusitis, postoperative group of the same 36 cases in follow-up, and a group of 84 cases of the postoperative cyst of the maxilla. Average durations after the initial sinus surgery were 17.6 months for the postop. and 18.5 years for the cyst group. The preop. group served as a control and statistically significant differences were obtained in the orbital height, maxillary breadth, and height of the naso-antral communication at the middle meatus and breadth of the inferior nasal meatus. The postoperative retractions of such sinus walls as superior, medial and lateral were thus confirmed.Under the uneventful course, the postop. maxillary sinus is internally obliterated by scar tissue and is externally constricted by retractions of the sinus walls.The postoperative sinus thus resembles an underdeveloped maxillary sinus. A bibliographical review of reports concerning the functions of the maxillary sinus was done and a tentative conclusion was arrived as the maxillary sinus is a region left vacant between the functionally essential structures of the maxilla. The region might as well be filled with medullary tissue or postop. scar tissue, without significant influence.The Caldwell-Luc surgery does not lead to any functional alterations, at least in adults. The surgery does produce a change, however, which might be closely related to the etiological mechanism of postoperative cysts of the maxilla.
社団法人日本耳鼻咽喉科学会の論文

上顎洞壁の術後陥入現象について

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