title: Chronic Maxillary Sinusitis Caused by Denture Lining Material.
abstract: We report a case of chronic maxillary sinusitis caused by denture lining material entering through an oroantral fistula after tooth extraction. The patient was an 80-year-old female who visited us with a complaint of pus discharge from the right posterior maxilla. She had extraction of the upper right second molar and had her upper denture relined with silicone lining material. The patient noticed swelling of the right cheek and purulent rhinorrhea 20 days before her first visit to our clinic. Oral examination showed an oroantral fistula with a diameter of 3 mm in the posterior alveolar ridge of the right maxilla. Computed tomography revealed a hyperdense foreign body in the right maxillary sinus and thickening of the mucosal lining. Under diagnosis of maxillary sinusitis caused by a foreign body, endoscopic maxillary surgery was performed simultaneously with the removal of the foreign body. The foreign body removed was 12 × 6 mm in size, oval in shape, light pink in color, and compatible with silicone denture lining material. During the follow-up it was observed that the oroantral fistula closed spontaneously after the removal of the foreign body. The maxillary sinus was in a good shape without recurrence of sinusitis seven months after surgery.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Narakasuga Hospital, Nara, Japan; Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Sugiura
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Yamamoto
authors.affiliation: Department of Oral and Maxillofacial Surgery, Narakasuga Hospital, Nara, Japan; Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Chie
authors.initials: C
authors.lastname: Nakashima
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Murakami
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Matsusue
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Horita
authors.affiliation: Department of Otolaryngology, Nara City Hospital, Nara, Japan.
authors.forename: Go
authors.initials: G
authors.lastname: Sakagami
authors.affiliation: Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
authors.forename: Tadaaki
authors.initials: T
authors.lastname: Kirita
keywords: Denture lining material; Endoscopic surgery; Foreign body; Maxillary sinusitis