This retrospective study of 15 central and five peripheral calcifying odontogenic cysts (COCs) was undertaken to compare the characteristics of these two lesions. The data reveal that the central COCs were more common than peripheral lesions by a 3:1 ratio and that they were usually diagnosed in the second decade of life, whereas the peripheral ones were usually noted after the age of 50. Seven of the 15 central COCs (47%) were associated with odontomas, and three (20%) with dentigerous cysts. Conservative enucleation or excision was the treatment of choice.
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