表 1.

基线及3个月复查时两组探诊深度结果的比较

Comparison of probing depth results between two groups at baseline and 3 months later

Group	n	Baseline/mm, x±s	3 months later/mm, x±s	Change/mm, x±s	P value
Test group	21	5.62±0.86	3.95±0.74	1.67±0.91	< 0.001
Control group	20	5.95±1.19	3.70±0.73	2.25±1.12	< 0.001
P value		0.31	0.28	0.07