Table 1.

Search strategies employed for various databases and results retrieved.

SNo.	Database	Search strategy	Results retrieved
1	Cochrane Library	#1- laser	19071
		#2 - photobiomodulation	441
		#3 = #1 OR #2	19289
		#4 - resorption	4248
		#5 = #3 AND #4	63
			Cochrane Database of Systematic Reviews	Cochrane CENTRAL Register of Controlled Trials
			11	52
2	Pubmed	((((((tooth movement) OR movement) OR (orthodontic[All Fields] OR orthodontically[All Fields])) OR force)) AND (((((((((((lasers) OR low-level light therapy) OR semiconductor lasers) OR laser) OR phototherapy) OR photobiomodulation) OR diode) OR biostimulation) OR LLLT) OR "PBM") OR "PBT")) AND (((((root resorption) OR tooth resorption) OR cementum) OR cementoclast*) OR (odontoclast[All Fields] OR odontoclastic[All Fields] OR odontoclastogenesis[All Fields] OR odontoclasts[All Fields])) (Filters- Human studies)	33
3	Google Scholar	"low level laser" OR “photobiomodulation” "root resorption" (searched on 20.1.20) Filters applied – Exclude ‘patents and citations’ Year range- 1990–2000.	988
4	ScienceDirect	("laser" OR "light" OR "photobiomodulation" OR "biostimulation" OR "phototherapy" OR "diode") ("cementum" OR "resorption" OR "cemental" OR "cementoclast" OR “odontoclast”) ("tooth movement") (Filter applied – Research articles)	47
5	Semantic Scholar	Root resorption laser Root resorption photobiomodulation Root resorption light (Filters applied – Journal article, Clinical Trial)	173 69 136
		Total	378
6	Opengrey.eu	("laser" OR "light" OR "photobiomodulation" OR "biostimulation" OR "phototherapy" OR "diode") ("cementum" OR "resorption" OR "cemental" OR "cementoclast" OR “odont clast”) ("tooth movement")	0
	Total		1509