Table 1.

Phenotype of Cebpb and Runx2 genetically modified mice. (F₂:129 Sv/C57BL/6) with aberrant incisors at 3 months after birth. The table shows penetrance, location, and characteristics of aberrant incisors.

	Cebpβ+/+Runx2+/+ (F2)	Cebpβ+/+Runx2+/−(F2)	Cebpβ−/−Runx2+/+ (F2)	Cebpβ−/−Runx2+/− (F2)
Penetrance	0/4 (0%)	0/9 (0%)	5/8 (62.5%)	4/12 (33%)
Location of aberrant incisor
Maxilla	0(0%)	0(0%)	5(100%)	4(100%)
Mandible	0(0%)	0(0%)	0(0%)	0(0%)
Unilateral	0(0%)	0(0%)	1(20%)	4(100%)
Bilateral	0(0%)	0(0%)	4(80%)	0(0%)
Characteristics of aberrant incisors
Short incisor	0(0%)	0(0%)	3(60%)	0(0%)
With supernumerary teeth	0(0%)	0(0%)	2(40%)	4(100%)