Table 2 Excluded articles and reasons for exclusion.

From: Lasers efficacy in pain management after primary and secondary endodontic treatment: a systematic review and meta-analysis of randomized clinical trials

Reasons for exclusion

Records

Duplicate report (n = 1)

Brignardello-Petersen (2018)36

Different study design (Not a randomized clinical trial (n = 2)

Barciela (2019)37

Souza (2021)38

Alteration in the conventional treatment modality (n = 1)

Nunes (2019)39

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