Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (20): 3125-3129.doi: 10.3969/j.issn.2095-4344.3217

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Constructing finite element models of three maxillary arch forms

Li Yuanyuan, Lu Yingjuan, Ye Yushan, Mustafa M.M Weldali, Chang Shaohai   

  1. Department of Stomatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • Received:2020-05-22 Revised:2020-05-23 Accepted:2020-06-29 Online:2021-07-18 Published:2021-01-15
  • Contact: Chang Shaohai, Associate professor, Associate chief physician, Department of Stomatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • About author:Li Yuanyuan, Master, Physician, Department of Stomatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • Supported by:
    dental arch form; maxillary; orthodontics; three-dimensional; finite element; biomechanics

Abstract: BACKGROUND: Dental arch shape is often considered as an important factor in oral treatment; however, there is no report on the construction of three-dimensional finite element models of different dental arches.
OBJECTIVE: To establish the three-dimensional finite element models of maxillary dental arches including square, ovoid, tapered.
METHODS: An adult female patient after orthodontic treatment was selected as the subject of this study and her CT data were analyzed used Mimics 20.0 software, Geomagic Studio (2014) software, UnigraphicsNX (10.0) software and ANSYS (18.2) finite element analysis software to generate a complete model of maxillary dental arch. Then, through the calculation of the equations of different dental arch shapes and guide the equations into established dental arch model, three-dimensional finite element models of square, ovoid and tapered dental arches were constructed.
RESULTS AND CONCLUSION: A fourth-order polynomial function describing the dental arch shape was obtained and three-dimensional finite element models of square, ovoid and tapered maxillary dental arch were successfully constructed. Square arch had 398 098 nodes and 223 751 units, ovoid arch had 401 800 nodes and 226 177 units, and tapered arch had 404 434 nodes and 227 430 units. These will provide a reliable basis for subsequent biomechanical analysis and clinical practice.

Key words: dental arch form, maxillary, orthodontics, three-dimensional, finite element, biomechanics

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