Application value of combination therapy of periodontal curettage and root planing on moderate-to-severe chronic periodontitis in patients with type 2 diabetes

Table 3 Comparison of blood glucose levels among four groups (\( \overline{x} \) ±s)

Group	Time	Fasting blood glucose (mmol/L)	2-h postprandial blood glucose (mmol/L)	Glycosylated hemoglobin (%)
Combined group (n=18)	Before therapy	9.98±1.28	9.29±1.01	9.83±1.78
	After 3 months of therapy	8.03±1.03	8.13±1.07	7.38±0.87
Root planing group (n=18)	Before therapy	9.94±1.32	9.31±1.17	9.81±1.82
Root planing group (n=18)	After 3 months of therapy	8.23±1.23	8.23±1.73	7.42±0.65
Periodontal curettage group (n=18)	Before therapy	9.97±1.42	9.30±1.35	9.79±1.29
Periodontal curettage group (n=18)	After 3 months of therapy	8.16±1.22	8.32±0.76	7.68±1.73
Cleansing group (n=18)	Before therapy	9.92±1.39	9.34±1.46	9.85±1.82
Cleansing group (n=18)	After 3 months of therapy	8.21±1.43	8.65±0.87	7.76±1.27
t		0.007	0.005	0.004
P		0.999	1.0	1.0
t’		0.095	0.669	0.441
P′		0.963	0.574	0.724
t^*		5.036	3.345	4.283
P^*		<0.001	0.002	<0.001
t^#		3.886	2.194	5.247
P^#		<0.001	0.035	<0.001
t^*#		4.12	2.684	4.148
P^*#		<0.001	0.011	<0.001
t^#		3.638	2.087	3.995
P^#		0.001	0.044	<0.001

Note: t and P were the comparison of four groups before treatment; t’ and P′ were the comparison of four groups 3 months after treatment; t* and P* were the comparison of combined group before and 3 months after treatment; t# and P# were the comparison of root planing group before and 3 months after treatment; t*# and P*# were the comparison of periodontal curettage group before and 3 months after treatment; t*#* and P*#* were the comparison of cleansing group before and 3 months after treatment

ISSN: 1746-160X