. 2018 May 15;18:87. doi: 10.1186/s12903-018-0538-y

Table 2.

Comparison of palatal width among primary, mixed and permanent dentitions; and between males and females

	Mean ± SD of palatal width (mm)
	inter-molar/Korkhaus’ compass			inter-molar/digital caliper			inter-canine/digital caliper
	total	male	female	total	male	female	total	male	female
primary	39.37^a ± 1.81	39.50^a ± 1.96	39.20^a ± 1.71	38.55^a ± 3.45	38.01^a ± 4.36	39.31^a ± 1.56	28.47^a ± 3.13	28.38^a ± 3.90	28.59^a ± 1.84
Mixed	44.90^b ± 5.36	43.95^b ± 7.86	45.60^b ± 2.15	44.75^b ± 6.78	43.85^b ± 10.12	45.42^b ± 2.37	28.94^a ± 8.73	29.31^a ± 7.13	28.68^a ± 9.85
Permanent	47.21^c ± 2.78	48.81^c ± 2.58	45.87^b ± 2.17	47.17^c ± 3.01	49.06^c ± 2.21	45.59^b ± 2.70	33.54^b ± 4.85	34.97^b ± 2.04	32.34^b ± 6.07
P value*	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.038
Total		46.58 ± 5.43	45.32 ± 2.73		46.54 ± 6.54	45.09 ± 3.01		32.87 ± 4.90	31.08 ± 7.28
P value**		0.031			0.036			0.025

*using one-way ANOVA followed by Tukey’s post hoc test. Groups with the same letter are not significantly different

**t-test