Table 1. Role of LLLT in periodontics.

LLLT: low-level laser therapy; CAF: coronally advanced flap; MRTD: multiple-recession type defects; CAL: clinical attachment level; LLL: low-level laser; LILT: low-intensity laser therapy; PPD: periodontal probing depth; InGaAsP: indium gallium arsenide phosphide.

Periodontal surgery	Study	Conclusion
Root coverage	For the treatment of multiple-recession type deformities, Ozturan et al. (2011) evaluated the effects of LILT concerning root coverage after CAF operation (MRTD) [34].	Notwithstanding the study's shortcomings, the authors found that LILT may enhance CAF prediction in several recessions.
Intraosseous defect	Bhardwaj et al. studied LLLT in the treatment of intraosseous defects [35].	The combined LLLT and demineralized bone matrix of the bovine origin approach produced favorable outcomes in terms of CAL growth, a reduction in periodontal probing depth (PPD), low clinical recession, linear bone gain, and bone filling on radiographs.
Gingivectomy	In this split-mouth controlled clinical experiment, Kohale et al. (2018) evaluated the impact of LLLT employing a diode laser (InGaAsP) on patients' responses and wound healing following scalpel gingivectomy [36].	The authors concluded that, within the constraints of the study, the findings suggested that LLLT might accelerate gingivectomy wound healing.
Implant	The impact of 650 nm LLL irradiation on the decline in problems following advanced implant operations was examined by Pouremadi et al. in 2019 [37].	Adjuvant laser therapy could considerably enhance wound healing and lessen the intensity and length of pain and edema about the biological consequences of sophisticated implant operations and associated problems.
Furcation involvement	All investigated the clinical and radiographic effects of LLLT on the recovery of human grade II furcation involvements treated with xenograft materials derived from cattle in a study published in 2015 [38].	The data pointing to possible therapeutic benefits of LLLT for periodontal tissue regeneration for furcation grade II lesions suggest that LLLT for furcation grade II lesions may promote new bone production and bone density.
Non-surgical periodontal therapy	LLLT was examined by Gündoğar et al. (2016) as a supplement to the non-surgical treatment of chronic periodontitis [39].		The authors concluded that adding LLLT to non-surgical periodontal treatment improves clinical metrics.