Comparison of 3D printing MJP and FDM technology in dentistry

Abstract

Purpose: Many printers are tempting at low prices, but later their accuracy turns out to be insufficient. The study has included checking the accuracy of printing and reproducing details of 3D printers used in dental technology and dentistry such as MultiJet Printing (ProJet MP3000, 3D Systems) and Fused Deposition Modelling (Inspire S2000, Tiertime). Design/methodology/approach: The 3D prints were created from scans of the maxillary gypsum model with the loss of left premolar. In the test, objects were set to the X and Y-axis. In order to check the dimensional differences after printing, scans of the printed models were superimposed on scans of the plaster model in the GOM Inspect V8 SR1 (Braunschweig, Germany). The focus was on the distance of scans from each other and a deviation map was created for each object. Findings: The average absolute value of deviations for each of models were equalled: FDMfor X-axis 0.06 ± 0.04 mm, for Y-axis 0.07 ± 0.04 mm; MJP- for X-axis- 0.04 ± 0.02 mm, for Y-axis- 0.06 ± 0.02 mm. A chart of arithmetic averages calculated for each tooth for the best printouts in each series show that higher deviation values exist in case of FDM printout. The models printed in the X-axis have smaller values of deviations from those printed in the Y-axis. Practical implications: MultiJet Printing technology can be used to create more precise models than the FDM, but these printouts meet the requirements of dimensional accuracy too. Originality/value: CAD / CAM technology in the future will exist in every dental technology laboratory so it is important to be aware of the way the 3D printers works. By paying attention to the quality of detail reproduction, a Dental Technician is able to choose the best 3D printer for them.

The Influence of 3D Printing Parameters on Adhesion between Polylactic Acid (PLA) and Thermoplastic Polyurethane (TPU)

“…Additive manufacturing (AM) technologies allow components with adjustable geometry and mechanical properties [ 4 , 5 , 6 ] that can be used in a wide variety of industry sectors to be obtained [ 7 ]. Fused deposition modelling (FDM), also known as fused filament fabrication (FFF), is an AM process based on extrusion, where material as a filament is melted and selectively dispensed through a fine nozzle layer upon layer according to the slice model [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ].…”

Three-dimensional printed models versus conventional stone models

“…It calculates each point using analytical geometry and rounds numbers differently for each case. The differences from other printing technologies comprise the level of accuracy and thickness of single layers 15 . In this methodology, we printed 0.3-mm layers and all groups presented clinically acceptable accuracy.…”

“…The discrepancies found in this study could be attributed to the unevenness of the occlusal area 2 , where cusps, tips, and grooves may compromise the pattern of the FDM printer, as shown previously in digital light processing. The created point cloud tag for FDM printouts could bypass the place of deviation so that the final distortion obtained could be lower than the real distortion 15 . In addition, the reproducibility of convex shapes seemed to be better in conventional SMs than in the 3D printed models 1 .…”

Raster Angle Prediction of Additive Manufacturing Process Using Machine Learning Algorithm

“…Fused deposition modeling (FDM) is a popular method in 3D printing [11], especially for fabricating metal parts with complex geometries [12]. It offers flexibility over traditional machining methods, making it suitable for various industries like drones, medicine, robotics, and defense [13,14].…”