Browsing DCG Research and Table Clinic Day 2019 by Authors
EFFECT OF PRINT ANGULATION, MODEL RESIN, AND PRINTER ON DIMENSIONAL ACCURACY OF 3D PRINTED MODELSFantaski, Lincoln; Mettenburg, D; Brenes, C; Rueggeberg, FA; Department of Restorative Sciences, Department of General Dentistry (Augusta University, 2019)Recent advances in the application of digital imaging of oral tissues and three-dimensional, additive fabrication techniques have led to a burgeoning industry in dentistry. Over a very short period of time, this technology has greatly improved in terms of level of surface detail reproducibility and dimensional accuracy of printed forms. Initially, thermoplastic extrusion of warmed filaments of various plastic material was used. However, the layer thickness was quite large, and surface feature reproduction was low. With advances in use of photocurable monomer resins and controlled application of photo-activating light wavelengths to provide polymerization of very thin slices of the form image, the reality of providing stoneless models of a patient’s dentition became a physical, and financial reality in private dental practices.
EFFECT OF WAVELENGTH EXPOSURE SEQUENCE ON COMPOSITE HARDNESSPatel, Mohit; Mettenburg, D; Rueggeberg, FA; Cellular and Molecular Biology, Department of Restorative Sciences (Augusta University, 2019)To measure and compare composite top and bottom surface microhardness values when using a multi-wave LED curing light emitting simultaneous blue and violet light, or when the sequence of wavelength applications was provided as separate exposures, of similar duration.