DOI QR코드

DOI QR Code

Targeted presurgical decompensation in patients with yaw-dependent facial asymmetry

  • Kim, Kyung-A (Department of Orthodontics, Kyung Hee University School of Dentistry) ;
  • Lee, Ji-Won (Department of Dentistry, Graduate School, Kyung Hee University) ;
  • Park, Jeong-Ho (Department of Dentistry, Graduate School, Kyung Hee University) ;
  • Kim, Byoung-Ho (Private Practice) ;
  • Ahn, Hyo-Won (Department of Orthodontics, Kyung Hee University School of Dentistry) ;
  • Kim, Su-Jung (Department of Orthodontics, Kyung Hee University School of Dentistry)
  • 투고 : 2016.06.14
  • 심사 : 2016.09.28
  • 발행 : 2017.05.25

초록

Facial asymmetry can be classified into the rolling-dominant type (R-type), translation-dominant type (T-type), yawing-dominant type (Y-type), and atypical type (A-type) based on the distorted skeletal components that cause canting, translation, and yawing of the maxilla and/or mandible. Each facial asymmetry type represents dentoalveolar compensations in three dimensions that correspond to the main skeletal discrepancies. To obtain sufficient surgical correction, it is necessary to analyze the main skeletal discrepancies contributing to the facial asymmetry and then the skeletal-dental relationships in the maxilla and mandible separately. Particularly in cases of facial asymmetry accompanied by mandibular yawing, it is not simple to establish pre-surgical goals of tooth movement since chin deviation and posterior gonial prominence can be either aggravated or compromised according to the direction of mandibular yawing. Thus, strategic dentoalveolar decompensations targeting the real basal skeletal discrepancies should be performed during presurgical orthodontic treatment to allow for sufficient skeletal correction with stability. In this report, we document targeted decompensation of two asymmetry patients focusing on more complicated yaw-dependent types than others: Y-type and A-type. This may suggest a clinical guideline on the targeted decompensation in patient with different types of facial asymmetries.

키워드

참고문헌

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피인용 문헌

  1. Maxillary molar intrusion and transverse decompensation to enable mandibular single-jaw surgery with rotational setback and transverse shift for a patient with mandibular prognathism and asymmetry vol.157, pp.6, 2017, https://doi.org/10.1016/j.ajodo.2019.02.022
  2. Three-dimensional Analysis of Cranial Vault and Position of Mandibular Fossa : ―Part 2. Analysis of Asymmetric Mandibular Protrusion Cases― vol.30, pp.4, 2017, https://doi.org/10.5927/jjjd.30.267
  3. Automated Real-Time Evaluation of Condylar Movement in Relation to Three-Dimensional Craniofacial and Temporomandibular Morphometry in Patients with Facial Asymmetry vol.21, pp.8, 2021, https://doi.org/10.3390/s21082591