The frequency and features of idiopathic osteosclerosis and condensing osteitis lesions in panoramic radiography in patients refered to radiology department of tabriz dental faculty in 2012 & 2013Author

Abstract

Idiopathic osteosclerosis (IO) is limited area of ossification that cannot be clearly attributed to identifiable sources of osteogenesis. They are asymptomatic, uniformly radiopaque foci of dense bone, usually with distinct outlines, that are apparently not the sequelae of infection or systemic disease. These lesions are detectable by accident in radiographies. Condensing osteitis (CO) has relatively similar radiographic appearance to IO, however, it is related to the teeth with extensive caries, restoration or pulpitis and is formed as a direct result of infection. Relative frequency of IO has been reported to be between 2.4 to 9.7% and for CO, 0.84 to 6% is reported. Aim: The purpose of the current study was to investigate radiographic pattern and relative frequency of IO and CO in panoramic radiographies of a population from Tabriz. Materials and methods: Altogether 411 panoramic radiographies were randomly selected from patients referred to radiology department of faculty of dentistry of Tabriz University of medical sciences in 2012 and 2013. These radiographies where assessed by an oral and maxillofacial radiologist for detection of IO and CO bone lesions. In addition, their shape, border, location and relation to adjacent teeth were documented in data sheets. Finally, relative frequency of these lesions in assessed radiographies was calculated by descriptive statistics. Results: IO was detected in 31 (7.5%) patients mostly in their thirties. Of these 23 (74.2%) were female and 8 (25.8%) were male. 22 (68.8%) lesions had well-defined border while their shape was mostly irregular (40.6%). Irregular lesions had mostly ill-defined border and round and oval lesions had mostly well-defined border. 17 (53.1%) lesions were apical and 13 (40.6) lesions had no relation to the teeth. The most involved teeth were second premolar (28.1%) and first molar (25%). CO was detected in 32 (7.8%) patients mostly in their forties. Of these 15 (46.9%) were female and 17 (53.1%) were male. 17 (53.1%) lesions had ill-defined border and their shape was mostly irregular (65.6%). Irregular lesions had mostly ill-defined border. 18 (56.3%) lesions were apical and 11 (34.4) lesions were apical and interradicular. The most involved teeth were second premolar (59.4%) and first molar (21.9%). Conclusion: The results demonstrated that relative frequency of IO in the selected population is 7.5% and for CO, it is 7.8%.