• The person using Korean Journal of Orthodontics Online may use, reproduce, disseminate, or display the open access version of content from this journal for non-commercial purposes
• Any use of the open access version of this Journal in whole or in part must include the customary bibliographic citation, including author and publisher attribution, date, article title, Korean Journal of Orthodontics, and the URL http://kjo.or.kr/ and MUST include a copy of the copyright notice. If an original work is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated
• For any commercial use of material from the open access version of the journal, permission MUST be obtained from Korean Association of Orthodontics. Email: office@e-kjo.org
• Commercial use is defined as being ANY kind of re-use for the commercial gain of the user, their employing institution and/or any other third party. Examples of commercial use include:
  
  • a. re-use by a non-author/third party/other publisher of parts of or all of an article or articles in another publication (journal or book) to be sold for commercial purposes
  • b. the proactive supply of multiple print or electronic copies of items taken from the Journal to third parties on a systematic basis for marketing purposes
  • c. re-use by an author of parts of or all of an article in other publications from commercial organizations

● This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.