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Table 2 Comparison of periodontal clinical indexes among the four groups (\( \overline{x} \) ±s)

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

Group Time PI (mm) GI (mm) PD (mm) AL (mm)
Combined group (n=18) Before therapy 2.49±0.63 0.96±0.12 5.66±0.59 5.78±1.72
  After 3 months of therapy 0.41±0.06 0.32±0.08 3.01±0.19 3.28±0.28
Root planing group (n=18) Before therapy 2.38±0.71 0.99±0.16 5.62±0.37 5.68±1.01
After 3 months of therapy 0.54±0.02 0.46±0.09 3.42±0.15 3.49±0.32
Periodontal curettage group (n=18) Before therapy 2.45±0.59 0.92±0.14 5.61±0.37 5.82±1.39
After 3 months of therapy 0.52±0.07 0.47±0.10 3.40±0.16 3.51±0.33
Cleansing group (n=18) Before therapy 2.51±0.63 0.98±0.17 5.71±0.37 5.87±1.28
After 3 months of therapy 0.64±0.06 0.54±0.07 3.76±0.34 3.65±0.53
t   0.144 0.78 0.177 0.062
P   0.933 0.509 0.912 0.98
t’   176.034 20.796 33.883 2.939
P′   <0.001 <0.001 <0.001 0.039
  1. Note: t and P were the comparison of four groups before treatment, and t’ and P′ were the comparison of four groups after 3 months of treatment