Effect of Photodynamic Therapy on Soft Tissue Healing After Tooth Extraction at Sites of Periodontal Infection

The aim of this study is to evaluate the effect of photodynamic therapy (PDT) on softtissue healing and bone remodeling in tooth extraction sockets after tooth extraction.The enrolled patients will be randomized into two groups. The control group usedconventional tooth extraction to clean the wound, and the experimental group usedphotodynamic therapy to help clean the wound. Seven days and 14 days after extraction,the area of extraction socket was measured, the healing rate of extraction socket wascalculated, and Landry, Turnbull and Howley soft tissue healing index was measured. Thedegree of pain was recorded at 6h, 1 day, 2 days and 3 days after tooth extraction. Boneremodeling indexes were measured at 1 month after tooth extraction.