Table 2: Comparison of the different values of clinical indicators between the two groups in the split-mouth study.

Index Experimental group Control group
(mm)meanmedian qualityupper qualitylower qualitymeanmedian qualityupper qualitylower quality

PD0.761.00.001.000.49.00.001.00
CAL0.21.00.000.250.14.00.00.00
BI1.121.001.002.000.731.00.001.00

indicates compared with the control group.