Funding for this research was provided by:
Japan Society for the Promotion of Science (JP19K19061)
Received: 8 March 2020
Accepted: 26 May 2020
First Online: 20 July 2020
Ethics approval and consent to participate
: Patient recruitment and data collection for this study took place at Nihon University School of Dentistry Dental Hospital, Japan. The research was approved by the Nihon University School of Dentistry Ethics Committee (permit number: EP16D013), 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 obtained were anonymized. Written informed consent was obtained from patients for the publication of this report and any data.
: Written consent to publish was obtained from all participants.
: Authors Keisuke Seki, Akira Hasuike, Yoshihiro Iwano, and Yoshiyuki Hagiwara state that there are no conflicts of interest.