表 1.

不同失牙数人群的基线特征

Baseline characteristics of the sample according to the various number of teeth lost (TL=0, TL=1-2, and TL≥3)

Characteristics	TL=0(n=174)	TL=1-2(n=34)	TL≥3(n=9)	P
TL, tooth loss; WPDL, widened periodontal ligament space; CAL, clinical attachment loss; CALmax, the maximum of clinical attachment loss; PD, probing depth; PDmax, the maximum of probing depth; IBD, intrabony defect; BL, bone loss. * P＜0.05, represents statistically significant difference among TL= 0, TL=1-2 and TL≥3. ☆P＜0.05, represents statistically significant difference between TL=0，TL=1-2 and TL≥3. #P＜0.05, represents statistically significant difference between TL=0 and TL≥3.
Age/years☆	33.13±7.50	36.41±5.05	35.67±6.00	0.033
Gender, n(%)☆				0.007
Female	87 (50.0)	20 (58.8)	0 (0.0)
Male	87 (50.0)	14 (41.2)	9 (100.0)
Smoking dosage#	7.28±15.12	8.10±12.78	12.79±9.03	0.029
Smoking years	5.82±8.73	5.18±7.95	13.44±7.49	0.014
Number of baseline missing molars☆	0.27±0.70	1.53±1.89	1.78±1.05	＜0.001
Number of teeth with WPDL*	0.28±0.67	1.15±1.64	2.89±3.41	＜0.001
Number of teeth with PD≥7 mm/%*	1.00±5.30	5.00±13.8	15.00±20.40	0.002
Number of teeth with PD≥5 mm/%*	16.00±20.70	28.00±32.3	44.00±34.40	0.022
Mean CAL/mm#	2.16±0.96	2.49±1.15	4.25±2.01	0.003
CALmax/mm#	2.90±1.61	3.08±2.11	6.13±3.27	0.015
Number of teeth with CAL≥5 mm/%*	18.70±24.49	29.62±32.31	64.44±34.88	＜0.001
Number of teeth with CAL≥3 mm/%	66.54±32.75	74.29±26.65	89.00±19.74	0.090
Mean PD/mm#	2.73±0.46	3.00±0.66	3.42±0.67	0.002
PDmax/mm#	5.18±1.21	5.63±1.41	6.44±1.67	0.004
Number of teeth with IBD☆	0.50±0.98	1.26±1.99	2.00±1.73	0.003
Number of teeth with BL＞65%*	0.06±0.48	0.21±0.48	3.56±4.85	＜0.001
Number of teeth with BL＞50%*	0.75±2.01	2.06±3.22	9.78±7.38	＜0.001
Number of teeth with caries/residual roots☆	0.56±1.03	1.68±1.77	2.00±2.29	＜0.001
Number of teeth with periapical lesions*	0.28±0.63	1.24±1.37	2.33±2.00	＜0.001