Predicting thickness distribution of thermoplastic dental aligners via KBKZ-based finite element analysis.

ABSTRACT: This study aims to clarify the thickness distribution and its dynamic evolution during the thermoforming of PET thermoplastic dental film for orthodontic appliances using a numerical simulation system based on the KBKZ integral constitutive model. It establishes a mapping relationship between initial and formed thickness, offering a method to optimize membrane thickness and process parameters at various stages of orthodontic treatment. A nonlinear viscoelastic finite element analysis framework was constructed using the KBKZ integral constitutive model. PET thermoplastic dental film with initial thicknesses of 0.6 mm, 0.8 mm, and 1.0 mm were studied. Thermoforming simulations were conducted using the ASNSY-Polyflow module. Physical membrane thermoforming experiments were also performed. Thi

SUBMITTER: Luo L 

PROVIDER: S-EPMC12644669 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature