Table 9.

Interdental contacts in percentages, with data division into three groups: 45%–55%, more than 55%, and less than 45%. Kruskal-Wallis test.

Interdental contacts in %		N	Mean	SD	Min	Max	P < 0.05
Relationship between RTA and LTA	Left (>55%)	23	1.052	0.5125	0.1	2.4	0.004
	Right (<45%)	18	1.872	0.9336	0.4	3.8
	45%–55%	31	1.426	0.8706	0.4	4.1
Difference between RTA and LTA	Left (>55%)	23	−4.04 μV	54.444	−127 μV	126 μV	0.012
	Right (<45%)	18	46.94 μV	52.571	−79 μV	166 μV
	45%–55%	31	35.39 μV	89.949	−145 μV	299 μV