Comparison of the different methods of width estimation in unerupted canine and premolars

BMC Oral Health

Table 2 Comparison the exact measure of the total mesiodistal width of the canine and first and second premolars with the value obtained by the Tanaka-Johnson formula

Jaw	Teeth	Mean ± SD	R	R²	Difference of the means	P value*
Maxilla	Exact measure	21.79 ± 1.12	0.677	0.458	0.86	< 0.001
Maxilla	Tanaka-Johnson	22.65 ± 0.61	0.677	0.458	0.86	< 0.001
Mandible	Exact measure	21.33 ± 1.14	0.660	0.436	0.82	< 0.001
Mandible	Tanaka-Johnson	22.15 ± 0.61	0.660	0.436	0.82	< 0.001

ISSN: 1472-6831