3.

A、B组两组间开门角的比较(x±s)

Comparison of open angles between the two groups (x±s) /(°)

Segment	Post-operation			Final follow-up
	Group A	Group B	P	Group A	Group B	P
C3	30.1±5.7	34.5±6.9	0.06	34.0±4.9	31.8±7.1	0.44
C4	28.4±5.3	35.1±6.4	0.003	31.2±6.0	31.7±7.0	0.87
C5	33.5±4.4	34.9±6.4	0.52	33.8±5.0	31.5±5.9	0.36
C6	29.9±6.3	37.9±6.0	0.001	30.6±5.9	34.8±4.1	0.07
C7	32.3±5.2	37.7±8.5	0.07	33.9±5.3	34.2±6.0	0.91