Tumors of Odontogenic Epithelium

AKA Pinborg Tumor Incidence Accounts for less than 1% of odontogenic tumors. Most common from 30 to 50 years of age. No sex predilection. Location 2/3 of cases in mandible, most often in posterior area Origin The tumor bears close morphologic resemblance to the cells of the stratum intermedium of the enamel organ. Others suggest

Overview Slow growing, locally invasive tumors Relative frequency equals the combined frequency of all other odontogenic tumors, excluding odontomas Tumors arising from rests of dental lamina, from a developing enamel organ, from the epithelial lining of odontogenic cyst, or from the basal cells of the oral mucosa Not neurotrpic (do not invade nerve) but are

Rule of 2/3rds: 2/3 occur in maxilla, 2/3 in second decade of life; 2/3 female Cause Derived from enamel organ epithelium or from remnants of dental lamina. Incidence represents 3% to 7% of all odontogenic tumors. 2/3 of cases occur in 2nd decade; female affected twice as often as males Location often affects anterior jaw;