1. 1. Al-Jobair AM, Al-Sadhan SA, Al-Faifi AA, et al. Medical and dental health status of orphan children in central Saudi Arabia. Saudi Med J 2013;34(5):531–536.
2. 2. Zehra Kavak H. Report on world orphans. Published by IHH Humanitarian and. Social Researches Center; July 2014, Fatih/İstanbul, Turkey.
3. 3. Ojahanon PI, Akionbare O, Umoh AO. The oral hygiene status of institution dwelling orphans in Benin City, Nigeria. Niger J Clin Pract 2013;16(1):41–44. DOI: 10.4103/1119-3077.106732
4. 4. Park K. Park's Text Book of Preventive and Social Medicine, 19th edition. Jabalapur, India: Banarsidas Bhanot Publishers; 2007.
5. 5. Kumar S, Goyal A, Tadakamadla J, et al. Oral health related quality of life among children with parents and those with no parents. Community Dent Health 2011;28(3):227–231.