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Biomechanical Effects of Different Auxiliary-Aligner Designs for the Extrusion of an Upper Central Incisor: A Finite Element Analysis
Joint Authors
D’Antò, Vincenzo
Michelotti, Ambrosina
Savignano, R.
Valentino, R.
Barone, S.
Razionale, Armando
Source
Journal of Healthcare Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-07
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Aim.
To evaluate the biomechanical effects of four different auxiliary-aligner combinations for the extrusion of a maxillary central incisor and to define the most effective design through finite element analysis (FEA).
Materials and Methods.
A full maxillary arch (14 teeth) was modelled by combining two different imaging techniques: cone beam computed tomography and surface-structured light scan.
The appliance and auxiliary element geometries were created by exploiting computer-aided design (CAD) procedures.
The reconstructed digital models were imported within the finite element solver (Ansys® 17).
For the extrusion movement, the authors compared the aligner without an attachment with three auxiliary-aligner designs: a rectangular palatal attachment, a rectangular buccal attachment, and an ellipsoid buccal attachment.
The resulting force-moment (MF) system delivered by the aligner to the target tooth and the tooth displacement were calculated for each scenario.
Results.
The maximum tooth displacement along the z-axis (0.07 mm) was obtained with the rectangular palatal attachment, while the minimum (0.02 mm) was obtained without any attachments.
With the ellipsoid attachment, the highest undesired moments Mx and My were found.
The rectangular palatal attachment showed the highest Fz (2.0 N) with the lowest undesired forces (Fx = 0.4 N; Fy = −0.2 N).
Conclusions.
FEA demonstrated that the rectangular palatal attachment can improve the effectiveness of the appliance for the extrusion of an upper central incisor.
American Psychological Association (APA)
Savignano, R.& Valentino, R.& Razionale, Armando& Michelotti, Ambrosina& Barone, S.& D’Antò, Vincenzo. 2019. Biomechanical Effects of Different Auxiliary-Aligner Designs for the Extrusion of an Upper Central Incisor: A Finite Element Analysis. Journal of Healthcare Engineering،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1175492
Modern Language Association (MLA)
Savignano, R.…[et al.]. Biomechanical Effects of Different Auxiliary-Aligner Designs for the Extrusion of an Upper Central Incisor: A Finite Element Analysis. Journal of Healthcare Engineering No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1175492
American Medical Association (AMA)
Savignano, R.& Valentino, R.& Razionale, Armando& Michelotti, Ambrosina& Barone, S.& D’Antò, Vincenzo. Biomechanical Effects of Different Auxiliary-Aligner Designs for the Extrusion of an Upper Central Incisor: A Finite Element Analysis. Journal of Healthcare Engineering. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1175492
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175492