Print ISSN: 2581-9356
Online ISSN: 2581-9364
CODEN : IIJOCV
IP Indian Journal of Orthodontics and Dentofacial Research (IJODR) open access, peer-reviewed quarterly journal publishing since 2015 and is published under the Khyati Education and Research Foundation (KERF), is registered as a non-profit society (under the society registration act, 1860), Government of India with the vision of various accredited vocational courses in healthcare, education, paramedical, yoga, publication, teaching and research activity, with the aim of faster and better dissemination of knowledge, we will be publishing the more...Original Article
Author Details :
Volume : 10, Issue : 3, Year : 2024
Article Page : 177-184
https://doi.org/10.18231/j.ijodr.2024.032
Abstract
Introduction: Clear aligner are thermoplastic polyurethane materials which produces small increments of tooth movements by each aligner tray. Clinical effectiveness of the treatment largely depend on the mechanical properties of the material. The use of scanning electron microscopy (SEM) in invitro environment allows to evaluate the surface morphology of the aligners
Aim: The aim of the study is to compare the surface roughness of different types of clear aligners after thermoforming and after invitro aging.
Materials and Methods: A sample of 15 aligners from Group A (DURAN), Group B (ERKODUR), Group C (MONOFLEX) were taken for this study. After screening the subjects were scanned by intraoral scanner and STL file were imported to Maestero 3D software. Then resin models were printed and aligners were fabricated in the models by thermoforming machine. The first set of aligners were scanned by Scanning Electron Microscope and another set of aligners were placed in chewing simulator for simulating intraoral environment. Then the second set of aligners were sent for SEM evaluation.
Result: Mean comparison of surface roughness and root mean square surface roughness was compared by paired t test and comparison among the groups was done by one way ANOVA test.
Conclusion: The surface roughness of both aligners increased after thermoforming. This could be due to thermoforming process which could be due to temperature variation. After the ageing of the aligners in the invitro environment, there is homogenous and smooth layer of the aligner surfaces which could be due to adhesion of biofilm and polishing effect by chewing strokes.
Keywords: Clear aligners, PET G, Surface roughness
How to cite : Devi S, Rajendran R, Selvaraj P, Jeevagan S, Reddy M S R, A scanning electron microscope evaluation of surface roughness of different clear aligners – A comparative in-Vitro study. IP Indian J Orthod Dentofacial Res 2024;10(3):177-184
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