Cytological responses of periodontal tissue against low-level Er:YAG laser photobiomodulation

Abstract

Photobiomodulation of low-level laser therapy （LLLT） has favorable biological effects on periodontal tissue. We reviewed basic studies on the cytological responses of cells in periodontal tissue for LLLT by Er:YAG laser in vitro. Low-level Er:YAG laser irradiation has been reported to affect proliferation and gene expression in osteoblasts, osteocytes, fibroblasts, and periodontal ligament cells.