Do the mechanical and chemical properties of InvisalignTM appliances change after use? A retrieval analysis

European Journal of Orthodontics
T Gerard BradleyT Eliades

Abstract

To investigate the mechanical and chemical alterations of Invisalign appliances after intraoral aging. Samples of Invisalign appliances (Align Technology, San Jose, California, USA) were collected following routine treatment for a mean period of 44±15 days (group INV), whereas unused aligners of the same brand were used as reference (group REF). A small sample from the central incisors region was cut from each appliance and the buccal surface was analysed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy (n = 5). Then the appliances were cut (n = 25) and embedded in acrylic resin, ground/polished in a grinding polishing machine, and the prepared surfaces were subjected to Instrumented Indentation Testing under 4.9 N load. Force-indentation depth curves were recorded for each group and the following parameters were calculated according to ISO 14577-1; 2002 specification: indentation modulus (E IT), elastic to total work ratio also known as elastic index (ηIT), Martens Hardness (HM), and indentation creep (C IT) The mean values of the mechanical properties were statistically analysed by unpaired t-test (a = 0.05). ATR-FTIR analysis confirmed the urethane based structure of the appliances, without ...Continue Reading

References

Aug 12, 1998·European Journal of Orthodontics·K BergströmB Wilde
Nov 14, 2003·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Anne-Marie BollenTsun Ma
Nov 14, 2003·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Karen Michelle ClementsTsun Ma
Dec 14, 2004·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Susan SchusterT Gerard Bradley
Apr 12, 2005·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Theodore Eliades, Christoph Bourauel
Dec 5, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·Shakeel A ShahdadRobert W Wassell
Apr 17, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·James P ZiuchkovskiDelwin T Lindsey
Jan 6, 2009·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Neal D KravitzBrent Agran
Oct 5, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Alexander D VardimonTamar Brosh
Dec 7, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Daniel K WaltonJames C Christensen
Jun 2, 2014·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Mareike SimonChristoph Bourauel

❮ Previous
Next ❯

Citations

Sep 24, 2016·International Journal of Oral Science·Chen-Lu LiuZhi-He Zhao
Nov 2, 2016·The Angle Orthodontist·Tommaso CastroflorioAndrea Deregibus
Oct 26, 2016·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Anne-Kathrin BräscherJustus Benrath
May 14, 2020·Dentistry Journal·Francesco TamburrinoArmando Viviano Razionale
Nov 22, 2020·Materials·Cinzia Maspero, Gianluca Martino Tartaglia
Apr 4, 2021·International Journal of Environmental Research and Public Health·Alessandra PutrinoGabriella Galluccio
May 1, 2021·Materials·Gianluca M TartagliaAlberto Caprioglio
May 6, 2021·European Journal of Orthodontics·Esad CanTheodore Eliades
Jun 29, 2021·Progress in Orthodontics·Kazem DalaieSamin Ghaffari
Aug 21, 2021·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Bijan GolkhaniChristoph Bourauel
Sep 28, 2021·Orthodontics & Craniofacial Research·Spiros ZinelisTheodore Eliades

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aging Genetics (Keystone)

This feed focuses on aging epidemiology and genetic, epigenetic, and proteomic aspects underlying aging, as well as aging- associated biomarkers. Here the latest research in this domain.

Related Papers

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Susan SchusterT Gerard Bradley
Ch'ikwa Kijae Hakhoe chi. The Journal of the Korea Research Society for Dental Materials
C W Kim, Y G Sunoo
American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Kevin B MillerTimothy T Wheeler
© 2022 Meta ULC. All rights reserved