Volume 14, Number 3, September 2002

Dome-shaped Radiopacities in the Maxillary Sinus on Panoramic Radiographs: a Clinical and Radiological Study

Yohko Fukuta, Hiroko Satoh, Morio Totsuka

Department of Oral Diagnosis, School of Dentistry, Iwate Medical University, Morioka, Japan

Objective: To perform a clinical and radiological study of dome-shaped radiopacities of the maxillary sinus seen on panoramic radiographs.
Patients and Methods: Panoramic radiographs were obtained from 2302 patients between March 1998 and February 2000.
Results: 203 patients (8.8%) had dome-shaped radiopacities in the maxillary sinus. Patients with dome-shaped radiopacities were predominantly men aged between 20 and 29 years. 172 patients had solitary lesions and 31 had multiple lesions in the maxillary sinus. There were a total of 240 dome-shaped radiopacities, and most appeared to rise from the floor of the maxillary sinus. Dental findings below the dome-shaped radiopacities were noted in 65.0% of patients. The size of the dome-shaped radiopacities measured on panoramic radiographs ranged from 28 to 1130 mm2 with a mean of 302 mm2.
Conclusion: It is likely that various factors contribute to the occurrence of dome-shaped radiopacities of the maxillary sinus.

Key words: Maxillary sinus, Radiography, panoramic

Asian J Oral Maxillofac Surg. 2002;14:139-143.
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