Hypercementosis--an important clue to Paget disease of the maxilla.

Paget disease of the maxilla and mandible is not rare. There appears to be a significant correlation between skull involvement in the form of osteoporosis circumscripta and maxillofacial changes. The maxillary component can be of the typical form of Paget disease or be in the form of hypercementosis. The latter change is not well recognized and we present two cases with such involvement.