Appendix 1. MEDLINE (OVID) Search Strategy

1. ("non‐carious cervical lesion$" or "noncarious cervical lesion$" or "class v lesion$" or "non‐carious lesion$" or "noncarious lesion$" or "abfraction lesion$" or "class v restor$").mp.
2. Tooth Cervix/ and (lesion$ or cavit$).mp.
3. ("cementoenamel junction$" and (lesion$ or cavit$)).mp.
4. (flexure adj3 (tooth or teeth)).mp.
5. ((tooth or teeth) adj3 sclerosis).mp.
6. (((tooth or teeth) adj3 (cervix or cervical)) and (lesion$ or cavit$)).mp.
7. or/1‐6
8. Dental Restoration, Permanent/
9. Dental Restoration, temporary/
10. exp Dental Bonding/
11. ((tooth or teeth or dental) and (adhesiv$ or bond$)).mp.
12. Glass Ionomer Cements/
13. Composite Resins/
14. Resin cements/
15. (adhesive adj restor$).mp.
16. ("acid etch$" or acid‐etch$ or compomer$ or composite$ or nanocomposite$ or resin$ or "polyacid‐modified composite resin$" or "polyacid modified composite resin$" or "polyacid‐modified resin‐based composite$" or "glass ionomer$" or glass‐ionomer$ or "self etch$" or self‐etch$ or PM‐RC$ or RM‐GIC$).mp.
17. or/8‐16
18. 7 and 17

The above search strategy will be linked to the Cochrane Highly Sensitive Search Strategy (CHSSS) for identifying randomised trials in MEDLINE: sensitivity maximising version (2008 revision), as referenced in Chapter 6.4.11.1 and detailed in Box 6.4.c of the Cochrane Handbook for Systematic Reviews of Interventions (Higgins 2011).

1. randomized controlled trial.pt.
2. controlled clinical trial.pt.
3. randomized.ab.
4. placebo.ab.
5. drug therapy.fs.
6. randomly.ab.
7. trial.ab.
8. groups.ab.
9. or/1‐8
10. exp animals/ not humans.sh.
11. 9 not 10