Funding for this research was provided by:
Japan Society for the Promotion of Science (JP16H05546 and JP15K11230)
Received: 4 March 2019
Revised: 29 April 2019
Accepted: 27 May 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: The animal experiments were approved by the Matsumoto Dental University Committee on Intramural Animal Use (no. 289).
: Not applicable.
: The authors declare that they have no competing interests.