Table 1. Table showing Excluded articles and reasons for exclusion.

No	Excluded articles	Reasons for exclusion
1.	Felemban, et al 2021 [20]	Intra-oral vibration was used
2.	Menni, et al 2020 [22]	Intra-oral vibration was used
3.	Salma, et al 2021 [25]	Intra-oral vibration was used and too in adults
4.	Smorarek, et al 2020 [16]	Intra-oral vibration was used
5.	Hassanein, et al 2020 [21]	Intra-oral vibration was used
6.	Veneva, et al 2019 [30]	Intra-oral vibration was used
7.	Tandon, et al 2018 [28]	Intra-oral vibration was used
8.	Tung, et al 2018 [29]	Intra-oral vibration was used
9.	Erdogan, et al 2018 [19]	Intra-oral vibration was used
10.	Raslan, et al 2018 [24]	Intra-oral vibration was used
11.	Shaefer, et al 2017 [26]	Intra-oral vibration was used
12.	Bagherian, et al 2016 [13]	Intra-oral vibration was used
13.	Shilpapriya, et al 2015 [27]	Intra-oral vibration was used
14.	Elbay, et al 2015 [18]	Intra-oral vibration was used
15.	Nasehi, et al 2015 [23]	Intra-oral vibration was used
16.	Difelice, et al 2014 [17]	Intra-oral vibration was used
17.	Ching, et al 2014 [15]	Intra-oral vibration was used