Gaonkar 2004.

Study characteristics
Methods	Study design: prospective, randomised, double‐blind, controlled trial Intention‐to‐treat: not stated Sample size calculation: not stated Setting: single centre. India Follow up: 36 hours
Participants	N = 50 Age: 4 to 72 months
Interventions	Group 1: (n = 25) extraoral infraorbital nerve block with 1 ml bupivacaine 0.25% plus adrenaline was administered and saline solution infiltration of the incision Group 2: (n = 25) saline solution was administered for nerve blockade, and 1 ml bupivacaine 0.25% plus adrenaline was infiltrated in the incision
Outcomes	Postoperative pain relief scoring was measured according to Hanallah’s 10‐point score Time to first analgesic given as a rescue
Notes	Jadad score: 4
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not stated
Allocation concealment (selection bias)	Unclear risk	Not stated
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Double blinded. Saline solution used as control
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Double blinded. Saline solution used as control
Incomplete outcome data (attrition bias) All outcomes	Low risk	No losses
Selective reporting (reporting bias)	Low risk	The report of the study was free of suggestion of selective outcome reporting
Other bias	High risk	Size: sample size less than 50 per treatment arm