Received: 24 May 2018
Accepted: 9 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: This case report was approved by the institutional review board (IRB) of Gangneung-Wonju National University Dental Hospital (2017-018).
: The patient consented to the publication of this case report.
: All authors declare that they have no competing interests.
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