Table 1.

Characteristics of the search strategy used for the umbrella review

1.	Type of literature: Published material	Source: PubMed-Medline Scopus LILACS (Latin-American scientific literature in health sciences) EMBASE (The Excerpta Medica Database) The Cochrane Database of Systematic Reviews
	Grey literature	Source: Google Scholar Manual searches
2.	Search terms	Example of PubMed Search: Search ((((("Regenerative Endodontics"[Mesh]) OR "Root Canal Therapy" [Mesh]) OR "Apexification"[Mesh]) OR (( "Dental Pulp Diseases/therapeutic use" [Mesh] OR "Dental Pulp Diseases/therapy"[Mesh] )))) OR (((((((((((dentin-pulp complex regeneration[Title/Abstract]) OR pulp revascularization[Title/Abstract]) OR pulpal revascularization[Title/Abstract]) OR endodontic revascularization[Title/Abstract]) OR root canal therapy [Title/Abstract]) OR Regenerative endodontic treatment[Title/Abstract]) OR Apexification [Title/Abstract]) OR Endodontic regeneration [Title/Abstract]) OR Dental pulp regeneration[Title/Abstract]) OR Pulp regeneration[Title/Abstract]) OR Pulpal regeneration[Title/Abstract]) Filters: Meta-Analysis; Systematic Reviews Example of EMBASE search: ('regenerative endodontics': ti, ab, kw OR 'root canal therapy': ti, ab, kw OR apexification: ti, ab, kw OR 'dentin-pulp complex regeneration': ti, ab, kw OR 'pulp revascularization': ti, ab, kw OR 'pulpal regeneration': ti, ab, kw) AND ('meta-analysis'/de OR 'systematic review'/de) For the other databases, the strategy was adapted accordingly to the specific thesaurus and free terms.