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Dimensional accuracy achievable by three-dimensional printing
, 2014 The ability to model components before manufacturing them aids the robustness of the design and reduces design changes. The modern three-dimensional (3D) printing process allows designers to visualize as well as to hold parts.
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Resolution and accuracy in two dimensional echocardiography
The American Journal of Cardiology, 1981The resolution and accuracy of commercially available two dimensional echocardiographic systems were tested by imaging two types of in vitro test objects. One consisted of a series of fine parallel threads spaced at known intervals and the other was a tissue phantom in which a series of holes of known size had been cut.
L A, Latson +2 more
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Dimensional accuracy of 3D printed vertebra
SPIE Proceedings, 20143D printer applications in the biomedical sciences and medical imaging are expanding and will have an increasing impact on the practice of medicine. Orthopedic and reconstructive surgery has been an obvious area for development of 3D printer applications as the segmentation of bony anatomy to generate printable models is relatively straightforward ...
Kent M. Ogden +4 more
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Dimensional Accuracy of 7 Die Materials
Journal of Prosthodontics, 2005Purpose: The purpose of this study was to compare the linear dimensional accuracy and the handling characteristics of 7 die materials. Materials and Methods: A master die analogous to a complete veneer crown preparation was machined from medical grade stainless steel, and 3 measurements (1: vertical; 2 and 3: horizontal) were
Brian J, Kenyon +4 more
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The effect of crowding on the accuracy of 3-dimensional printing
American Journal of Orthodontics and Dentofacial Orthopedics, 2023The purpose of this study was to evaluate the accuracy of 3-dimensional (3D) printed aligners compared to conventional vacuum-formed thermoplastic aligners with varying levels of dental crowding.Digital intraoral scans of 10 cases were assigned to their respective groups (n = 10, each, 30 total) as follows: no crowding (control), moderate crowding, and
Tonya Spangler +4 more
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Geometric Accuracy of Three-Dimensional Molecular Overlays
Journal of Chemical Information and Modeling, 2006This study examines the dependence of molecular alignment accuracy on a variety of factors including the choice of molecular template, alignment method, conformational flexibility, and type of protein target. We used eight test systems for which X-ray data on 145 ligand-protein complexes were available.
Qi Chen, Richard E. Higgs, Michal Vieth
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On the accuracy of two dimensional solvers for three dimensional imaging
2009 IEEE Antennas and Propagation Society International Symposium, 2009When the excitation is an infinite line source and object is uniform along the z-axis, the 3D and its equivalent 2D solutions give the same scattered field amplitude, but if the object is not uniform along the z-axis, scattered fields are different, which cause computational errors for the inverse algorithm.
Majid Ostadrahimi +2 more
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Dimensional accuracy and tolerances in additive manufacturing
Aplikacija industrije 4.0 – prilika za novi iskorak u svim industrijskim granama / Application of Industry 4.0 – an opportunity for a new step forward in all industrial branches, 2022Important quality indicators for products made by Additive Manufacturing (AM) methods include dimensional accuracy, tolerances, and surface roughness. This paper describes a novel benchmark part designed and manufactured by a Low Force Stereolithography (LFS) 3D printer and controlled on a coordinate measuring machine. The benchmark part contains basic
Samir Lemeš +3 more
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Dimensional accuracy of thermoformed polymethyl methacrylate
The Journal of Prosthetic Dentistry, 1996Thermoforming of polymethyl methacrylate sheet is used to produce a number of different types of dental appliances. The purpose of this study was to determine the dimensional accuracy of thermoformed polymethyl methacrylate specimens. Five blanks of the acrylic resin were thermoformed on stone casts prepared from a silicone mold of a brass master die ...
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Effects of disinfectants on dimensional accuracy of impression materials
The Journal of Prosthetic Dentistry, 1990There is a continuing concern over the potential for cross-contamination of viral infections such as AIDS by means of dental impressions. This investigation compared the effects of various viricidal agents on the accuracy of irreversible hydrocolloid and silicone impressions made of single-unit and full mandibular arch models.
J, Matyas +3 more
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