Table 3. FA-WALA ridge distances (mm) in the Peruvian sample.

Tooth	n	Mean‡	SD	Minimum	Maximum
First premolar	65	0.96	0.37	0.22	2.10
Second premolar	65	1.45	0.51	0.34	2.80
First molar	65	2.12	0.59	0.75	3.50
Second molar	65	2.55	0.62	1.02	3.95

‡General comparison by tooth type with ANOVA of repeated measures, F=229.72, p<0.001; post-hoc with Scheffe: p<0.001 to all comparisons; SD, standard deviation.