. 2022 Dec 6;55(1):52–61. [Article in Chinese] doi: 10.19723/j.issn.1671-167X.2023.01.008

表 1.

骨性安氏Ⅲ类错 Inline graphic 畸形患者下前牙牙周-正畸-正颌联合治疗前后牙周临床指标的比较

Comparison of periodontal clinical parameters before and after the periodontal-orthodontic-orthognathic combined treatment of lower anterior teeth in patients with skeletal Angle class Ⅲ malocclusion

Items	PLI, M(P₂₅, P₇₅)	PD/mm, x±s	BI, M(P₂₅, P₇₅)	REC/mm, M(P₂₅, P₇₅)	WKG/mm, x±s
PLI，plaque index; PD, probing depth; BI, bleeding index; REC, gingival recession; WKG, width of keratinized gingiva; T0, before treatment; T4, after the periodontal-orthodontic-orthognathic combined treatment; a means t value; b means Z value. * P < 0.05, a significant difference.
Central incisors
T0	0.0(0.0, 1.0)	1.96±0.40	1.0(1.0, 2.0)	0.0(0.0, 0.0)	3.83±1.11
T4	0.0(0.0, 1.0)	1.86±0.48	1.0(1.0, 2.0)	0.0(0.0, 0.0)	5.65±1.32
t or Z value	-1.439^b	0.945^a	-0.762^b	-0.707^b	7.231^a
P value	0.150	0.350	0.446	0.480	< 0.001^*
Lateral incisors
T0	1.0(0.0, 1.0)	2.18±0.47	1.0(1.0, 1.0)	0.0(0.0, 0.0)	3.97±1.10
T4	0.0(0.0, 1.0)	1.98±0.48	1.0(1.0, 2.0)	0.0(0.0, 0.0)	6.00±1.29
t or Z value	-2.313^b	1.842^a	-1.428^b	-1.380^b	8.716^a
P value	0.021^*	0.073	0.153	0.168	< 0.001^*
Canines
T0	1.0(0.0, 1.0)	2.31±0.46	1.0(1.0, 1.0)	0.0(0.0, 0.0)	3.41±1.11
T4	0.0(0.0, 1.0)	2.16±0.51	1.0(1.0, 2.0)	0.0(0.0, 0.0)	5.47±1.48
t or Z value	-1.830^b	1.311^a	-1.795^b	-1.000^b	10.229^a
P value	0.067	0.198	0.073	0.317	< 0.001^*