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KMID : 1149720200100030218
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Clinical Journal of Korean association of Orthodontists
2020 Volume.10 No. 3 p.218 ~ p.227
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A Case Study of Facial Asymmetric Patients Using Similarity Index, a New Method for Evaluating Three-Dimensional and Geometric Morphological Symmetry of the Mandible
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Han Won-Jin
Choi Sung-Hwan
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Abstract
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To evaluate the stereoscopically structural symmetry of the mandible, the landmark-based analyses that have been accustomed to two-dimensional images like lateral and posteroanterior cephalograms, even with three-dimensional (3D) cone-beam computed tomography, have definite limitations. The newly developed similarity index (SI) can make it easier to intuitively assess 3D mandibular asymmetry. An 18-year-old female with skeletal Class III and facial asymmetry underwent bimaxillary orthognathic surgery. The total treatment time was 16 months including pre-and post-surgical orthodontic treatment. SI was used to evaluate the patient’s asymmetry of the mandible before and after surgery. The feasibility of SI could be validated in diagnosing the asymmetry before surgery and evaluating the residual asymmetry after surgery.
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KEYWORD
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Facial asymmetry, Orthognathic surgery, Similarity index
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FullTexts / Linksout information
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Listed journal information
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