Title: 0114 - Characterization of 3D-printable Biocompatible Orthodontic Polymeric Material
Melinda Szaloki (Presenter)
University of Debrecen
Ferenc Tóth, University of Debrecen
Sara Khandan, University of Debrecen
Csaba Hegedus, University of Debrecen
Objectives: The 3D printing technology is widely used in dentistry. Biocompatible MED610 polymer is a 3D printable material used mainly in oral surgery and orthodontics. The aim of this study is to investigate the effect of different surface manipulations on degree of conversion (DC), polymerization shrinkage (PS) and surface bounded oligopeptides from a random peptide library regarding the MED610 (Stratasys, USA).
Methods: The samples for the testing were printed by Objet30 OrthoDesk (Stratasys,USA) 3D printer. The surface manipulation was done by two methods of support material removal after the 3D printing. The first method was the surface treatment (ST) protocol according to the manufacturer’s recommendation and the other method was the use of autoclaving (AC) system. The phage display was performed based on the New England Biolabs protocol with the help of 7-mer oligopeptides containing phage library (PhD-7). The PS of MED610 was measured by density determination kit of an analytical balance (Adam PW 254,UK) for 5 days in the case of ST and AC (n=15). A Nicolet 6700 Fourier Transform Infrared spectroscope (FTIR) (Thermo Electron Co. USA) in attenuated total reflectance (ATR) mode was used for DC measuring of MED610 for 5 day in both surface manipulation cases.
Results: The nature and hydrophilicity of surface bounded oligopeptides were different on ST and AC surfaces. The PS of ST and AC samples were 8.02 V/V% ± 0.18 and 7.52 V/V % ± 0.59 respectively at day 1. Moreover ST samples showed a lower change in PS during the 5 days. The DC of ST and AC samples 96.38 % ± 2.44 and 92.78 % ± 4.73, respectively.
Conclusions: In conclusion, the surface treatment change the surface character of MED610 polymer that has an effect on the bounded oligopeptides, PS and DC.
This abstract is based on research that was funded entirely or partially by an outside source:
The work is supported by the GINOP-2.3.2-15-2016-00011 and GINOP-2.3.2-15-2016-00022 projects. The projects are co-financed by the European Union and the European Regonal Development Fund.
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE