Fig. 5

Subgroup meta-analysis of photodynamic therapy compared with placebo andconventional treatments for postoperative pain management at specific intervals: (a) 24-30 hrs with conventional treatment, (b) 24-30 hrs with placebo, (c) 48-72 hrs withconventional treatment, (d) 48-72 hrs with placebo, (e) 7 days with conventionaltreatment, and (f) 7 days with placebo.