kjod-47-59.pdf - THE KOREAN JOURNAL of ORTHODONTICS Case...

  • No School
  • AA 1
  • misaregge
  • 15

This preview shows page 1 - 3 out of 15 pages.

Total intrusion and distalization of the maxillary arch to improve smile esthetics This case report illustrates the successful treatment of a patient with skeletal Class II malocclusion and an unesthetic smile involving excessive gingival display and large buccal corridors. By applying dual buccal interradicular miniscrews, total intrusion of the maxillary dentition along with distalization was induced to improve both the occlusion and smile esthetics. In addition to the conventional cephalometric superimposition, three-dimensional superimposition was performed and evaluated to validate the treatment outcome. [Korean J Orthod 2017;47(1):59-73] Key words: Smile esthetics, Gummy smile, Full-arch-intrusion, Three-dimensional superimposition Eui Seon Baek a Soonshin Hwang a,b Kyung-Ho Kim a,b Chooryung J. Chung a,b a Department of Orthodontics, Gangnam Severance Hospital, College of Dentistry, Yonsei University, Seoul, Korea b The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea Received April 28, 2016; Revised July 13, 2016; Accepted July 20, 2016. Corresponding author: Chooryung J. Chung. Associate Professor, Department of Orthodontics, Gangnam Severance Hospital, The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, 211 Eonjuro, Gangnam-gu, Seoul 06273, Korea. Tel +82-2-2019-3567 e-mail [email protected] *This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2016R1A2B4014882). 59 © 2017 The Korean Association of Orthodontists. The authors report no commercial, proprietary, or financial interest in the products or companies described in this article. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License () which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. THE KOREAN JOURNAL of ORTHODONTICS Case Report pISSN 2234-7518 • eISSN 2005-372X
Baek et al Total intrusion for smile esthetics 60 INTRODUCTION The improvement of smile esthetics is a top priority in contemporary adult orthodontic treatment. In addition to ideal occlusion, adequate gingival display with a harmonious gingival line, balanced smile arc, and ideal buccal corridor are key factors for an esthetic smile and facial attractiveness. 1,2 Excessive gingival display, also known as “gummy smile,” is characterized by excessive exposure of the maxillary gingiva while smiling. Gingival display of more than 2 mm while smiling is considered excessive and unattractive. 3,4 Gummy smile is caused by skeletal disharmony, such as vertical and horizontal excess of the maxilla or the maxillary dentition, which, in many cases, accompanies a functional imbalance of soft tissues, such as the upper lip or elevating muscles. 5,6 Thus, in general, various intrusion or surgical mechanics are

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture