Received: 13 December 2018
Accepted: 5 February 2019
First Online: 1 April 2019
Ethics approval and consent to participate
: Patient recruitment and data collection of this study took place at the Aristotle University of Thessaloniki, School of Dentistry, Greece. The research was approved by the Ethics Committee of the Aristotle University of Thessaloniki, Greece (14/02-02-2017) and all activities were conducted in full accordance with ethical principles, including the World Medical Association Declaration of Helsinki. We described the purpose of the study to patients, and the data were obtained anonymously.
: Not applicable.
: Authors Batas Leonidas, Tsalikis Lazaros, and Stavropoulos Andreas declare that they have no competing interests.
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