The 53rd Annual Scientific Congress of the Korean Association of Orthodontists PASSION FOR A LONG JOURNEY :
Nature vs Nurture

November 5(Thu) - 6(Fri), 2020
Precongress: November 1(Sun) / VOD: November 7(Sat) - 8(Sun)

Veteran Session

Functional considerations in orthodontics
Dr. Sang-Cheol Kim
  • Position
  • Emeritus Professor Department of Orthodontics, School of Dentistry Wonkwang University
  • Orthodontists in Whitedream dental clinic
  • Address
  • Whitedream dental clinic Gangnam-gu, Teheran-ro 108, Seoul, Korea
  • +82-10-2381-7347,
  • D.D.S. Seoul National University, School of Dentistry (1973. 3 - 1979. 2)
  • M.S.D. Department of Orthodontics, Graduate school, SNU (1982. 3 - 1984. 2)
  • Ph. D Department of Orthodontics, Graduate school, SNU (1984. 3 - 1988. 2)
  • In 1984 - 2019, I had been teaching and practicing Orthodontics in Wonkwang University.
  • In 1992 whole year, I was in the department of Orthodontics, university of California at San Francisco as a visiting professor.
  • I had served as a dean of school of dentistry, Wonkwang University in 2004-2006.
  • I have also served as the president of Korean Association of Orthodontists in Apr. 2008 - Mar. 2010.
  • I had served as a director in Daejon dental hospital, Wonkwang University, in Mar. 2012 - Feb. 2014

I would like to talk about 'Functional considerations in diagnosis and Treatment of orthodontic cases' in this lecture. What does 'Function' mean in orthodontics? Three kinds of concepts related to function could be discussed, that is, the position of mandible, the growth of mandible and the function of soft tissue.

Mandible can be displaced in sagittal, vertical and transverse direction in habitual occlusion. The significance of mandibular shift needs to be considered in diagnosis and treatment planning of malocclusion. We do not believe what we see in the mouth, and we do not diagnosis on what we see. If we want to treat to functional occlusion, we must functionally diagnose from therapeutic position of mandible. And the position of mandible can be changed in the process of orthodontic treatment. We evaluated the tooth movement in orthodontic treatment. The change of mandibular position was made following the change of occlusal plane in the treatment, and it was a contributing factor in the success of treatment of class II or III malocclusion, as well as tooth movement, itself.

The prediction of the growth of mandible is a difficult issue, which is mainly controlled by the hereditary factor. If so, is there nothing to be put on the hands of orthodontists to modify the growth? We noticed the functional factors in malocclusion, which could restrict or distort the growth of mandible, which has the growth site in temporomandibular joint.

Lastly, we could evaluate how soft tissue around dentition, as like tongue, the muscle of lip or cheek affect the dentition in malocclusion and treatment result.