Table 1. Excluded studies with reasons.

Sno	Excluded articles	Reasons for exclusion
1.	Senthoor et al. 2020.[19]	Study carried out in adults.
2.	Warren et al. 2017.[20]	Study carried out in adults.
3.	Phero et al. 2017.[21]	Study carried out in adults.
4.	Shurtz et al. 2015.[9]	Infiltration tested not IANB
5.	Saatchi et al. 2015.[10]	Study carried out in adults.
6.	Commerci et al. 2015.[11]	Study carried out in adults.
7.	Kashyap et al. 2011.[15]	Study carried out in adults.
8.	Whitcomb et al. 2010.[3]	Study carried out in adults.
9.	Ridenour et al. 2001.[4]	Study carried out in adults.
10.	Crose et al. 1991.[7]	Study carried out in adults.