Table 1. The search protocol across different databases.

Database	Search string
PubMed	(“veneers”[MeSH Terms] OR “veneers”[All Fields]) AND (“conventional veneers”[All Fields] OR “minimal prep veneers”[All Fields] OR “no-preparation veneers”[All Fields]) AND (“prosthodontics”[MeSH Terms] OR “prosthodontics”[All Fields])
Embase	(‘veneers’/exp OR ‘veneers’) AND (‘conventional veneers’ OR ‘minimal prep veneers’ OR ‘no-preparation veneers’) AND (‘prosthodontics’/exp OR ‘prosthodontics’)
Scopus	(TITLE-ABS-KEY (“veneers”) AND TITLE-ABS-KEY (“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND TITLE-ABS-KEY (“prosthodontics”))
Web of Science	TS=(“veneers”) AND TS=(“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND TS=(“prosthodontics”)
Cochrane Library	“veneers” AND (“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND “prosthodontics”
CINAHL	(MH “veneers”) AND (“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND (MH “prosthodontics”)
ProQuest	AB(veneers) AND AB(“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND AB(prosthodontics)
Google Scholar	intitle:veneers AND (“conventional veneers” OR “minimal prep veneers” OR “no-preparation veneers”) AND intitle:prosthodontics