Pure intrusion of a mandibular canine with segmented arch in lingual orthodontics: A numerical study with 3-dimensional finite element analysis

• Autorzy: Thote A. M. , Sharma K. , Uddanwadiker R. V. , Shrivastava S.

Identyfikatory

DOI

10.1016/j.bbe.2017.05.005

• Języki publikacji: EN

Abstrakty

EN

Objective: Approximately 50% patients with a deep bite possess anatomically extruded mandibular canines. The objective of this study was to specify the required toe (θ) of the vertical segment of a cantilever from the distal aspect to achieve pure intrusion of a mandibular canine with a segmented arch in lingual orthodontics. Additionally, the optimum magnitude of the required intrusive force by a cantilever was determined assuming non-linear, hyper-elastic behaviour of periodontal ligament (PDL). Methods: The geometrical model of a mandibular canine tooth was developed and the mathematical equation was devised to evaluate θ (positive value: toe-in, negative value: toe-out) based on certain input parameters. To verify this numerical study by finite element analysis (FEA), total eight different positions of point of force application (P_f) on bracket top (occlusal) surface were considered based on different values of input parameters. Results: The results were displayed in terms of nature of tooth movement and Von-Mises (equivalent) stresses generated in the PDL. Additionally, the optimum magnitude of the required intrusive force within the biological limit of a mandibular canine was determined from FEA considering the strength of PDL and factor of safety. Conclusions: The numerical study was developed to compute the value of required toe angle (θ) of the vertical segment of a cantilever for different morphologies of a mandibular canine as well as different positions of P_f. From FEA, the optimum range of an intrusive force within the biological limit of a mandibular canine was found to be 20–30 g.

Słowa kluczowe

EN

mandibular canine; pure intrusion; LiO; finite element analysis

PL

ortodoncja; LiO; analiza elementów skończonych

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2017
• Tom: Vol. 37, no. 3
• Strony: 590--598
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Thote A. M.

• Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India

autor

Sharma K.

• Department of Orthodontics, Sharad Pawar Dental College, Wardha, Maharashtra, India

autor

Uddanwadiker R. V.

• Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India

autor

Shrivastava S.

• Department of Orthodontics, Sharad Pawar Dental College, Wardha, Maharashtra, India

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).