**Author details**

Yasser Riaz Malik1,2\*, Muhammad Saad Sheikh3 and Shakeela Yousaf<sup>4</sup>

1 Department of Preventive Dentistry, Dental Public Health, University of Hail, Hail, Saudi Arabia

2 Department of Community Dentistry, Sir Syed College of Medical Sciences for Girls, Karachi, Pakistan

3 Department of Oral Biology, Sindh Institute of Oral Health Sciences, Jinnah Sindh Medical University, Karachi, Pakistan

4 Sir Syed College of Medical Sciences, Karachi, Pakistan

\*Address all correspondence to: docyrm@gmail.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*Probability and Sampling in Dentistry DOI: http://dx.doi.org/10.5772/intechopen.97705*
