Table 1.

Clinical Data of non-ossifying fibromas including age at detection, size in length, expansion in the transversal and sagittal diameter

	Stage Aa	Stage Ba	Stage Ca	Stage Da
Number of patients	19	53	17	14
Average age (years)	13 ± 3.7	15 ± 5.7	20.4 ± 7.7	40.1 ± 12.4
Average length (mm)	21 ± 11	38 ± 16	47 ± 29	34.6 ± 15
Average transversal diameter expansion (%)	20 ± 9	46 ± 22	39 ± 12	30 ± 10
Average sagittal diameter expansion (%)	39 ± 14	56 ± 25	39 ± 12	32 ± 10

^aStage according to Ritschl [5]. Data provide average value and standard deviation