Optimization of dimensional accuracy and surface roughness in m-SLA using response surface methodology

Article Dentistry, Oral Surgery & Medicine

Evaluation of the accuracy of orthodontic models prototyped with entry-level LCD-based 3D printers: a study using surface-based superimposition and deviation analysis

Antonino Lo Giudice et al.

Summary: The study found that dental models prototyped with entry-level LCD 3D printers are less accurate compared to professional-grade 3D printers, but still close to orthodontics clinical threshold values.

CLINICAL ORAL INVESTIGATIONS (2022)

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Article Dentistry, Oral Surgery & Medicine

A Novel Low-Shrinkage Resin for 3D Printing

Long Ling et al.

Summary: This study evaluated the shrinkage, accuracy, and mechanical properties of a newly developed 3D printing resin material and compared it with three commercially available resins. The results showed that the new resin exhibited lower shrinkage and higher accuracy compared to the commercial resins. It also had similar strength and modulus but slightly differed in properties compared to the commercial resins. Therefore, the new resin shows promise for dental applications.

JOURNAL OF DENTISTRY (2022)

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Article Engineering, Mechanical

Specific energy absorption during compression testing of ABS and FPU parts fabricated using LCD-SLA based 3D printer

Harshit K. Dave et al.

Summary: This study investigates the effect of different process parameters on the compression properties of liquid crystal display-based stereolithography technique. The results provide experimental data for selecting print parameters by comparing the compression properties of different materials, infill densities, and build orientations.

RAPID PROTOTYPING JOURNAL (2022)

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Article Engineering, Manufacturing

Modeling and prediction of surface roughness and dimensional accuracy in SLS 3D printing of PVA/CB composite using the central composite design

Mohammad Ebrahim Imanian et al.

Summary: This paper investigates the effects of selective laser sintering (SLS) 3D printing main process variables on surface roughness and dimensional accuracy, and develops mathematical models to predict these two indicators. The study identifies the influencing factors and explains their interactions. There is a need for further research in developing materials and composites for SLS technology.

JOURNAL OF MANUFACTURING PROCESSES (2022)

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Article Dentistry, Oral Surgery & Medicine

Evaluation of dimensional accuracy and degree of polymerization of stereolithography photopolymer resin under different postpolymerization conditions: An in vitro study

Awutsadaporn Katheng et al.

Summary: The study aimed to investigate the dimensional accuracy and degree of polymerization of photopolymer resin for stereolithography under different postpolymerizing times and temperatures. Results showed that the smallest average change in gap sizes was observed at 15 minutes and 40 degrees Celsius, while the largest change was seen at 30 minutes and 80 degrees Celsius. The recommended parameters for SLA polymerization are 15 minutes and 40 degrees Celsius.

JOURNAL OF PROSTHETIC DENTISTRY (2021)

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Article Polymer Science

Preparation and mechanism of free-radical/cationic hybrid photosensitive resin with high tensile strength for three-dimensional printing applications

Zijun Yang et al.

Summary: A UV-curing hybrid resin is developed by blending epoxy resin with an acrylic resin, forming an interpenetrating polymer network structure suitable for 3D printing applications. It is found that the tensile strength of the hybrid resin and the elongation at the break increase within a certain range, depending on the mass ratio of epoxy to acrylic resin. Additionally, the shrinkage of the hybrid resin decreases with the increase in epoxy resin content within a certain range.

JOURNAL OF APPLIED POLYMER SCIENCE (2021)

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Article Materials Science, Ceramics

LCD-SLA 3D printing of BaTiO3 piezoelectric ceramics

Anton Sotov et al.

Summary: In this study, lead-free piezoceramics based on barium titanate were successfully produced using LCD-SLA 3D printing technology. By testing different powders and determining thermal debinding parameters, a technique for preparing ceramic slurries suitable for LCD-SLA printing was developed. The results demonstrate the high potential of this technology for producing complex piezoceramic elements for use in various industries such as aviation, marine, and nuclear.

CERAMICS INTERNATIONAL (2021)

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Article Polymer Science

Experimental Characterization Framework for SLA Additive Manufacturing Materials

Jordi Martin-Montal et al.

Summary: Additive manufacturing (AM) has revolutionized the industry by allowing engineers and designers to optimize designs without long manufacturing times, but limitations in materials and mechanical properties of 3D printed parts hinder large-scale production. Experimental methodology framework proposed in this study aims to study materials printed by stereolithography (SLA) to broaden their use, while exploring the influence of different printing parameters on material behavior. Testing specimens were manufactured using Form 2 from Formlabs(R) with resin called Durable, providing insights for future research on other resins.

POLYMERS (2021)

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Article Dentistry, Oral Surgery & Medicine

Effect of build angle and layer height on the accuracy of 3-dimensional printed dental models

Jennifer Ko et al.

Summary: The study revealed that the build angle and layer height have significant interactive effects on the accuracy of 3D-printed dental models. While most models were within clinically acceptable ranges, those printed at 0 degrees/20 mu m were the least accurate. The choice of build angle and layer height should be considered in relation to the clinical application and desired print time.

AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS (2021)

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Article Radiology, Nuclear Medicine & Medical Imaging

A focused simulation-based optimization of print time and material usage with respect to orientation, layer height and support settings for multi-pathological anatomical models in inverted vat photopolymerization 3D printing

Prashanth Ravi et al.

Summary: The study focused on optimizing anatomical models' 3D printing process by considering factors like orientation, layer height, and support settings. The research found that a 0.1 mm layer height was the best setting across all models, with orientation having a complex impact on print time and material usage in some cases. Support density and tip size had minor effects on both variables, and hollow models required more support material compared to solid models.

3D PRINTING IN MEDICINE (2021)

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Proceedings Paper Polymer Science

The Printing Parameters Effects on the Dimensional Accuracy of the Parts Made of Photosensitive Resin

Marius-Andrei Boca et al.

Summary: The liquid crystal display is a resin additive manufacturing process used in various industries where surface quality, level of details, and dimensional accuracy are important. This study focuses on identifying and explaining issues related to dimensional accuracy, using printed samples made from dedicated photosensitive resin material and Gw basic software to determine the optimal printing parameters.

MACROMOLECULAR SYMPOSIA (2021)

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Proceedings Paper Polymer Science

Liquid Crystal Display (LCD) Printing: A Novel System for Polymer Hybrids Printing

Lorena Saitta et al.

Summary: This study successfully prepared and characterized a novel hybrid resin/ceramic blend that can be printed using LCD 3D printing technology with the correct settings. The printed parts showed good processability under proper conditions, including the use of an automated wipe system.

MACROMOLECULAR SYMPOSIA (2021)

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Article Dentistry, Oral Surgery & Medicine