Article History
Received: 23 March 2018
Accepted: 28 April 2018
First Online: 8 June 2018
Compliance with ethical standards
:
: Hayriye Cetmili, Melek Tassoker, and Sevgi Sener declare that they have no conflict of interest.
: The study protocol was approved by The Ethics Committee in Research of the Necmettin Erbakan University, Faculty of Dentistry (no. 2017/08). All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.