Table S1.

Search strategy

Database	Search strategy	Results
PubMed	(removal OR retreatment OR retrieval OR retrievability OR ‘‘endodontic retreatment’)) AND (“bioceramic sealer” OR “bioceramic root canal” OR “calcium silicate sealer” OR “calcium silicate cement*” OR ”endodontic sealers” OR ” root canal sealing material” OR ”root canal sealers” OR ” tricalcium silicate sealer” OR sealer)	886
Scopus	(TITLE-ABS-KEY (removal OR retreatment OR retrieval OR retrievability OR “endodontic retreatment”) AND (TITLE-ABS-KEY (“bioceramic sealer” OR “bioceramic root canal” OR “calcium silicate sealer” OR “calcium silicate cement*” OR “endodontic sealers” OR “root canal sealing material” OR “root canal sealers” OR “tricalcium silicate sealer” OR sealer) AND (LIMIT-TO (SUBJAREA, “DENT”))	640
Web of science	(TS= (removal OR retreatment OR retrieval OR retrievability OR “endodontic retreatment”) AND (TS= (“bioceramic sealer” OR “bioceramic root canal” OR “calcium silicate sealer” OR “calcium silicate cement*” OR “endodontic sealers” OR “root canal sealing material” OR “root canal sealers” OR “tricalcium silicate sealer” OR sealer)	543
EMBASE	(Ti= (removal OR retreatment OR retrieval OR retrievability OR “endodontic retreatment”) AND (Ti= (“bioceramic sealer” OR “bioceramic root canal” OR “calcium silicate sealer” OR “calcium silicate cement*” OR “endodontic sealers” OR “root canal sealing material” OR “root canal sealers” OR “tricalcium silicate sealer” OR sealer)	2878

OR: Odds ratio, EMBASE: Excerpta Medica dataBASE, ABS: Abstract, KEY: Keyword, DENT: Dental, TS: Titles, TI: Title