Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
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Achievement of Anterior Teeth Arrangement Using a Single Stage of Clear Aligner

  • Ryu, Seon-Jeong (Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry) ;
  • Choi, Sung-Hwan (Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry) ;
  • Cha, Jung-Yul (Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry) ;
  • Hwang, Chung-Ju (Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry)
  • Received : 2021.08.17
  • Accepted : 2021.10.19
  • Published : 2021.12.30
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Abstract

Purpose: The aim of this study was to evaluate the degree of achievement of anterior tooth movement using a thermoplastic clear aligner by superimposing pretreatment, setup, and post-treatment models and to analyze the factors that influence it. Materials and Methods: Forty patients who underwent clear aligner treatment at the Department of Orthodontics were included in the study. The pretreatment, setup, and post-treatment models were superimposed, and the achievement rates were evaluated. We analyzed the factors that caused changes in achievement rate on each condition. Result: The average achievement rate of total tooth movement was 57.65%. Mesiodistal and anteroposterior displacements were achieved better than vertical displacement and rotation. In each displacement, posterior, mesial, and extrusive movements were better achieved than the rotation. Spacing was better corrected than crowding, especially in the mesiodistal direction. Most of the tooth movements were achieved better when using 3-step thicknesses of aligners were used. Conclusion: The treatment results of clear aligners may differ depending on the type of tooth movement, age and other treatment conditions. Clinicians should consider unfavorable conditions based on the results of this study.

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References

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