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Table 3 Comparison of swelling in the two groups

From: Low‐level laser therapy using laser diode 940 nm in the mandibular impacted third molar surgery: double-blind randomized clinical trial

Swelling Laser Placebo p value
Mean SD Mean SD
Before surgery 150.4 9.00 151.2 7.53 0.474
Immediately after surgery 152.4 8.79 152.2 7.51 0.889
2nd day after surgery 156.8 9.11 159.72 7.84 0.174
7th day after surgery 150 7.5 153.2 6.43 0.112