1. Korea Information Society Development Institue. KISDI STAT RE-PORT: Korea media panel in 2017. Jincheon: Korea Information Society development institue;2017. p. 1–12.
2. Korea Internet and Security Agency. Survey on the use of smart-phones in 2012. Seoul: Korea Internet & Security Agency;2013. p. 1–32.
3. Ministry of Science, ICT and Future Planning. The second internet poisoning prevention and comprehensive plan for the integrated support system of internet poisoning by life cycle. Gwacheon: Ministry of Science, ICT and Future Planning;2013. p. 1–44.
4. Yoon YS. The relationship between the using smart phone and mental health state of middle school students. Inha Journal of Social Sciences. 2014; 29:111–134.
5. Zhang L. How game addiction and smart phone addiction affects teens physical health [master's thesis]. Seoul: Myongji Univer-sity;2013. [Korean].
6. Nam SJ. A study on the relationship of smart-phone addiction of juveniles and the emotional behavioral problem [master's thesis]. Jeonju: Jeonbuk National University;2013. [Korean].
7. Seo KH. Impacts of internet addiction on youth's problematic behavior : focused on family and school life [master's thesis]. Cheong-Ju: Korea National University of Education;2007. [Korean].
8. Won SH. The relationship between smart-media addiction, inner personal psychological factors and health problems in youth [Doc- toral dissertation]. Seoul: Sahmyook University;2017. [Korean].
9. Wang P, Zhao M, Wang X, Xie X, Wang Y, Lei L. Peer relationship and adolescent smartphone addiction: The mediating role of self-esteem and the moderating role of the need to belong. J Behav Addict. 2017; 6:708–717.
10. Lee YH. Activation of oral health education using smart phone [master's thesis]. Seoul: Hanyang University;2012. [Korean].
11. Lee HS, Youn JS, Kim JD. Implementation of oral patient management system using smartphone and embedded imaging module. JKIICE. 2018; 22:581–586.
12. Orford J. Addiction as excessive appetite. Addiction. 2001; 96:15–31.
Article
13. Korea Economy. IT [Internet]. Korea Economic Daily. [citied 2019 Apr 03]. Available from:. https://www.hankyung.com/article/2012102950081?nv=o.
14. Kim BR. The influence of stress on some highschool students to their oral health perception, oral health behavior, quality of life related to oral health [master's thesis]. Iksan: Wonkwang Univer-sity;2017. [Korean].
15. Shin BM. Association between stress, oral health behavior and oral health status among 6th grade primary school students in Gang-neung city. J Korean Acad Oral Health. 2010; 34:403–410.
16. Kang JY. Effects of health behaviors and mental health on family conflicts due to using smartphones among Korean adolescent [master's thesis]. Daejeon: Konyang University;2018. [Korean].