title: Radiographic investigation of mandibular periostitis ossificans in 55 cases.
abstract: The radiographic and clinical features of periostitis ossificans in 55 patients with mandibular osteomyelitis were studied. On the basis of whether the original mandibular contour was preserved or not, the lesions could be classified radiographically into two major types, each with two subtypes. Type I lesions were of shorter duration than Type II. Type 1-2 and Type II-1 periostitis ossificans were characteristically observed in patients under 25 years of age. Extraction of the lower third molar with pericoronitis was the most frequent cause of periostitis ossificans. An unerupted third molar tooth bud was found in close proximity to the area of periostitis ossificans in six patients. With adequate treatment there can be complete resolution of periostitis ossificans in Type I cases; however, when there has been loss of mandibular contour (Type II cases), mandibular deformity remains even when normal bony architecture has been restored.
authors.affiliation: Department of Oral and Maxillofacial Radiology, Osaka University, Faculty of Dentistry, Japan. tkawai@radiol.dent.osaka-u.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Kawai
authors.forename: S
authors.initials: S
authors.lastname: Murakami
authors.forename: M
authors.initials: M
authors.lastname: Sakuda
authors.forename: H
authors.initials: H
authors.lastname: Fuchihata
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D008875:Middle Aged; D008964:Molar, Third; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging; D010019:Osteomyelitis / Q000150:complications; D010497:Pericoronitis / Q000150:complications; D010522:Periostitis / Q000145:classification / Q000150:complications / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D011859:Radiography; D014081:Tooth Extraction / Q000009:adverse effects