Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (32): 5178-5183.doi: 10.12307/2021.221

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Optimizing the ratio of buccal gallery: a consideration on the therapeutic effect from a three-dimensional and multi-level perspective

Wei Hui, Zhang Chao, Zhang Wenzhong#br#

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  1. Department of Orthodontics, Stomatological Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China

  • Received:2020-10-12 Revised:2020-10-15 Accepted:2020-11-26 Online:2021-11-18 Published:2021-07-26
  • Contact: Zhang Wenzhong, Chief physician, Department of Orthodontics, Stomatological Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • About author:Wei Hui, Master, Physician, Department of Orthodontics, Stomatological Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81801007 (to ZC)

Abstract: BACKGROUND: Orthodontic treatment should not only improve the static profile and occlusal relationship, but also improve patient’s frontal smile aesthetics. As one of the most important evaluation indexes of positive dynamic smile aesthetics, buccal gallery has gradually become a research hotspot.
OBJECTIVE: To review the factors that affect the aesthetics and size of the buccal space and the influence of the size of the buccal space on the aesthetics of orthodontic smile, and further summarize and sort out how to better grasp the buccal space to create the beauty of smile in orthodontic clinic, and prospect its future development, so as to provide a theoretical basis for the diagnosis and treatment of dynamic smile in orthodontic clinic.
METHODS: A computer-based search was conducted for the relevant literatures from July 1999 to October 2020 in CNKI, WanFang, PubMed and Web of Science with the key words of “buccal corridor spaces, orthodontic, smile aesthetics”in Chinese and English, respectively. According to the inclusion and exclusion criteria, 51 articles were finally selected and summarized.
RESULTS AND CONCLUSION: Existing clinical evidence is not enough to prove that tooth extraction can influence the patient’s frontal smile aesthetics. For non-extraction cases of crowded dentition, orthodontists can choose a suitable self-locking bracket correction system to better coordinate the relationship between the width of the dental arch and the soft tissues of the buccal and facial area, making the patient show an appropriate size of the buccal gallery when smiling after correction, and effectively improving the frontal smile aesthetics. In the orthodontic treatment, the “full smile” should be pursued. Orthodontists should coordinate the buccal space and facial morphology, and take improving the buccal space as the goal of orthodontic design and treatment. From static profile aesthetics to dynamic positive aesthetics, the treatment effect is considered from three-dimensional and multi-level perspectives.


Key words: buccal gallery, orthodontic, smile aesthetics, review

CLC Number: