Table 1.

Comparison of baseline data between the two patient groups

Groups	Control group (n=153)	Observation group (n=139)	t/χ2	P
Age	45.18±8.15	45.32±7.81	0.143	0.886
Gender			0.208	0.648
male	84	80
female	69	59
BMI	23.99±1.69	23.92±1.27	-0.39	0.697
Course of disease	4.41±1.44	4.37±1.56	0.255	0.799
Tooth position			0.541	0.910
Second premolar	26	23
First molar	50	51
Second molar	56	47
Other	21	18
Planting site			0.243	0.622
Maxillary	66	56
Lower jaw	87	83
Postprandial gargle			0.001	0.969
Yes	69	63
No	84	76
History of smoking			0.318	0.573
Yes	72	70
No	81	69
History of alcohol consumption
Yes	61	43	0.186	0.667
No	92	87
History of diabetes			0.239	0.625
Yes	65	63
No	88	76

Note: BMI, Body Mass Index.