Table 2.
Included studies are as follows
| No | Study reference | journal | Population | Year of publication |
|---|---|---|---|---|
| 1 | Dou, L., et al. [3] | Scientific reports | Chinese | 2017 |
| 2 | Sierra-Cristancho, A., et al. [10] | Scientific reports | Chilean | 2021 |
| 3 | Alkaabi, W., et al. [20] | Medical Principles and Practice | Emirati | 2016 |
| 4 | Boschetti, E., et al. [24] | Brazilian Dental Journal | Brazilian | 2017 |
| 5 | Chen, J., et al. [25] | Clinical Oral Investigations | Chinese | 2014 |
| 6 | Fan, B., et al. [21] | Journal of Endodontics | Chinese | 2008 |
| 7 | Gu, Y., Y. Zhang, and Z. Liao [26] | Archives of oral biology | Chinese | 2013 |
| 8 | Guerreiro, D., et al. [27] | Journal of Endodontics | 2019 | |
| 9 | Li, X., et al. [28] | Journal of Endodontics | Southwestern Chinese | 2012 |
| 10 | Liu, N., et al. [29] | Clinical Oral Investigations | Southwestern Chinese | 2013 |
| 11 | Moreno, J.O., et al. [30] | Acta Odontológica Latinoamericana | Colombian | 2021 |
| 12 | Ordinola‐Zapata, R., et al. [31] | International Endodontic Journal | Brazilian subpopulation | 2015 |
| 13 | Zhang, D., et al. [32] | Clinical Oral Investigations | Southwestern Chinese | 2017 |