Table 1. Number of image data used in this study and the percentage of images according to individual panoramic radiograph.

	Stafne’s bone cavity	Cyst and tumors			Total
		Dentigerous cyst	Odontogenic keratocyst	Ameloblastoma
Data set (n)	176	282			458
		98	91	93
Panoramic radiography system (%, n)
A	34.7% (61)	52.1% (147)			45.4% (208)
B	54.5% (96)	34.4% (97)			42.1% (193)
C	10.8% (19)	13.5% (38)			12.4% (57)