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Mechanical properties of "two generations" of teeth aligners: Change analysis during oral permanence.
Condo', Roberta; Pazzini, Luca; Cerroni, Loredana; Pasquantonio, Guido; Lagana', Giuseppina; Pecora, Alessandro; Mussi, Valentina; Rinaldi, Antonio; Mecheri, Barbara; Licoccia, Silvia; Maiolo, Luca.
Afiliación
  • Condo' R; Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Via Montpellier.
  • Pazzini L; Institute for Microelectronics and Microsystems -National Research Council (IMM-CNR) Via del Fosso del Cavaliere.
  • Cerroni L; Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Via Montpellier.
  • Pasquantonio G; Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Via Montpellier.
  • Lagana' G; Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Via Montpellier.
  • Pecora A; Institute for Microelectronics and Microsystems -National Research Council (IMM-CNR) Via del Fosso del Cavaliere.
  • Mussi V; Institute of Complex Systems -National Research Council (ISC-CNR) Via del Fosso del Cavaliere.
  • Rinaldi A; ENEA -Technical Unit for Material Technologies (UTTMAT) Casaccia Research Center, Via Anguillarese.
  • Mecheri B; Department of Chemical Science and Technology, University of Rome "Tor Vergata".
  • Licoccia S; Department of Chemical Science and Technology, University of Rome "Tor Vergata".
  • Maiolo L; Institute for Microelectronics and Microsystems -National Research Council (IMM-CNR) Via del Fosso del Cavaliere.
Dent Mater J ; 37(5): 835-842, 2018 Sep 30.
Article en En | MEDLINE | ID: mdl-29998941
Aim of this in vitro study was to analyze structural properties of two different polymeric orthodontic aligners, Exceed30 (EX30) and Smart Track (LD30), before and after use. Forty patterns of aligners were randomly selected: 20 LD30 and 20 EX30, worn intra-orally for 14±3 days, 22 h/day. From each aligner, 10 specimens were prepared from buccal surfaces of the incisor region by the cutting of samples 5×5 mm under a stereomicroscope. All samples were subjected to Fourier transform infrared spectroscopy, micro-Raman spectroscopy, X-ray diffraction, tensile and indentation strength test. LD30 appeared more homogeneous, with a crystalline fraction lower than EX30 and exhibited a higher elastic behavior and a lower tendency to warp after use than EX30. LD30 demonstrated better adaptability to the dental arch and greater consistency of application of orthodontic forces than produced with EX30. However, both materials showed structural modifications that resulted in increased sample hardness and hyper-plasticity.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aparatos Ortodóncicos Removibles / Diseño de Aparato Ortodóncico Límite: Humans Idioma: En Revista: Dent Mater J Año: 2018 Tipo del documento: Article Pais de publicación: Japón
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aparatos Ortodóncicos Removibles / Diseño de Aparato Ortodóncico Límite: Humans Idioma: En Revista: Dent Mater J Año: 2018 Tipo del documento: Article Pais de publicación: Japón