Table 3.

Measurements following medial one-half facetectomy

Distance in mm (mean + SD) mm
	N root length				Horizontal				Height				Angulation
	Mean	Min	Max	P	Mean	Min	Max	P	Mean	Min	Max	P	Mean	Min	Max
C3	8.9 ± 0.8	7.7	10	0.002	7.1 ± 1	5.5	8.2	0.001	5.5 ± 0.6	4.6	6.6	0.001	51.3 ± 6.4	43.9	61
C4	9.5 ± 0.9	8.2	11	0.002	7.3 ± 0.9	6	8.9	0.001	6 ± 0.9	4.2	7.9	0.001	50.9 ± 5.4	44.4	62.7
C5	9.8 ± 0.7	9	12	0.002	7.6 ± 0.8	6.5	9.7	0.01	6.1 ± 0.7	4.4	7	0.001	51.3 ± 5	46.4	62.2
C6	11.3 ± 1	9.6	13	0.004	8.8 ± 1	7.3	10.1	0.004	7.1 ± 0.9	5.6	8.7	0.001	50.9 ± 3.9	43.2	59.3
C7	12.3 ± 0.8	11	14	0.002	9.8 ± 0.7	8.7	11	0.003	7.3 ± 1	5.7	9.4	0.004	53.3 ± 4.2	43.6	61.7