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Table 1 Database search strategy

From: Comparative evaluation of the vertical fracture resistance of endodontically treated roots filled with Gutta-percha and Resilon: a meta-analysis of in vitro studies

Pubmed 1. “Gutta-percha” [all fields] OR “Guttapercha” [all fields]
2. “AH-plus” [all fields] OR “Epoxy Resins” [all fields] OR “Resin Cements” [all fields] OR “epoxy resin-based root canal sealer” [all fields]
3. “Resilon” [all fields]
4. “tooth fracture” [all fields] OR “vertical fracture” [all fields] OR “fracture resistance” [all fields]
5. “english” [language]
6. (1 AND 2) OR 3
7. 4 AND 5 AND 6
Embase #1. guttapercha OR ‘gutta percha’
#2. ‘ah plus’ OR (epoxy AND resins) OR (resin AND cements) OR (epoxy AND ‘resin based’ AND root AND canal AND sealer)
#3. Resilon
#4. (fracture AND resistance) OR (tooth AND fracture)
#5. ((# 1 AND # 2) OR # 3) AND # 4
Cochrane Library 1. MeSH Terms: Root Canal Obturation
2. MeSH Terms: Root Canal Filling Materials
3. MeSH Terms: Gutta-Percha
4. MeSH Terms: resilon sealer
5. MeSH Terms: Tooth Fractures
6. MeSH Terms: Dental Stress Analysis
7. KEY WORD: fracture resistance
8. (# 1 OR # 2 OR (# 3 AND # 4)) AND (# 5 OR # 6 OR # 7)
Web of Science #1. TOPIC: (gutta-percha) OR TOPIC: (guttapercha)
#2. TOPIC: (AH-plus) OR TOPIC: (Epoxy Resins) OR TOPIC: (Resin Cements) OR TOPIC: (epoxy resin-based root canal sealer)
#3. TOPIC: (resilon)
#4. TOPIC: (tooth fracture) OR TOPIC: (vertical fracture) OR TOPIC: (fracture resistance)
#5. ((# 1 AND # 2) OR # 3) AND # 4
ScienceDirect (((gutta-percha or guttapercha) AND ((AH-plus) OR ((Epoxy Resins)) OR ((Resin Cements)) OR ((epoxy resin-based root canal sealer)))) OR (resilon)) AND (((tooth fracture)) OR ((vertical fracture)) OR ((fracture resistance)))