Search results for "3d printer"
showing 5 items of 5 documents
Comparison of the shear bond strength of 3D printed temporary bridges materials, on different types of resin cements and surface treatment
2019
Background Thus, purpose of this study was to compare the shear bond strength of the resin cement and the resin modified glass ionomer cement on 3D printed temporary material for crowns and bridges in combination with different surface treatment modalities. Material and methods Test specimens VarseoSmile Temp material (Bego, Bremen, Germany) (n=64) in the form of rectangular blocks (n=32) and cylindrical test specimens (n=32) were printed using the Varseo S 3D printer (Bego, Bremen, Germany). The specimens were divided into 4 groups, with 8 specimens of each kind. Two groups (n=16 pairs) were blasted with Perlablast® Micro [PM] 50µm (Bego, Bremen, Germany) and two groups (n=16 pairs) were b…
Improving High Frequency Transformers behavior for DC-DC Converter Used in Electric Vehicles
2018
The paper presents a design procedure for high frequency transformer windings adopted in the DC-DC converter used in electric vehicles. The output of the design procedure is the integration of a 3D printed plastic case in the transformer windings, with the aim to maximize the output power. The proposal design procedure is entirely based on a finite element analysis approach and on a differential evolution algorithm used for the solution of the optimization problem.
Accelerating orthodontic tooth movement: a new, minimally-invasive corticotomy technique using a 3D-printed surgical template
2015
Background A reduction in orthodontic treatment time can be attained using corticotomies. The aggressive nature of corticotomy due to the elevation of muco-periosteal flaps and to the duration of the surgery raised reluctance for its employ among patients and dental community. This study aims to provide detailed information on the design and manufacture of a 3D-printed CAD-CAM (computer-aided design and computer-aided manufacturing) surgical guide which can aid the clinician in achieving a minimally-invasive, flapless corticotomy. Material and Methods An impression of dental arches was created; the models were digitally-acquired using a 3D scanner and saved as STereoLithography ( STL ) file…
Topoloģijas optimizācijas algoritmi 3D printējamu struktūru dizainam
2017
Darbs "Topoloģijas optimizācijas algoritmi 3D printējamu struktūru dizainam" ir veltīts topoloģijas optimizācijas algoritmu un 3D printeru funkcionalitātes izpētei. Darbā tiek apskatīti divi topoloģijas optimizācijas algoritmi un to pielietojumi vairākos piemēros. Ir veikta plaša izpēte par 3D printeru tehnisko specifikāciju, to darbību un izmantošanas veidiem. Darba galvenais mērķis ir realizēt topoloģijas optimizācijas algoritmu no uzdevuma formulējuma līdz pat gatavai, izdrukātai detaļai. Darbā ir apskatīti 3D struktūru nepieciešamie izveides nosacījumi, to modelēšana ar topoloģijas optimizāciju, kā arī pats drukāšanas process. Darba rezultātā tika iegūts dzelzceļa tilta posms, kurš vēlā…
Development and evaluation of 3-dimensional printed models of the human tracheobronchial system for training in flexible bronchoscopy.
2017
OBJECTIVES Training and assessment of proper skills in flexible bronchoscopy are major educational goals for cardiothoracic residents. Therefore, we developed 3-dimensional (3D) printed models of the human tracheobronchial system for training and assessment of cardiothoracic residents in flexible bronchoscopy. METHODS Three models of normal (size/shape) human tracheobronchial anatomy were generated using a commercially available 3D printer. Ten residents (inexperienced: Group 1; experienced: Group 2) participated in this study with an experimental setting of initial assessment (Model 1), training (15 min, Model 2) and post-training assessment (Model 3). The time needed for flexible bronchos…