scholarly journals Accuracy of 3-dimensional printed dental models reconstructed from digital intraoral impressions

2018 ◽  
Vol 154 (5) ◽  
pp. 733-739 ◽  
Author(s):  
Gregory B. Brown ◽  
G. Fräns Currier ◽  
Onur Kadioglu ◽  
J. Peter Kierl
Keyword(s):  
3 Dimensional ◽  
Dental Models

scholarly journals Precision and trueness of dental models manufactured with different 3-dimensional printing techniques

2018 ◽  
Vol 153 (1) ◽  
pp. 144-153 ◽  
Author(s):  
Soo-Yeon Kim ◽  
Yoo-Seok Shin ◽  
Hwi-Dong Jung ◽  
Chung-Ju Hwang ◽  
Hyoung-Seon Baik ◽  
...  
Keyword(s):  
3 Dimensional ◽  
Dental Models ◽  
Dimensional Printing ◽  
Printing Techniques

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

2021 ◽  
Vol 160 (3) ◽  
pp. 451-458.e2
Author(s):  
Jennifer Ko ◽  
Richard D. Bloomstein ◽  
David Briss ◽  
J. Nathaniel Holland ◽  
Hamdy Mohammed Morsy ◽  
...  
Keyword(s):  
Layer Height ◽  
3 Dimensional ◽  
Dental Models

Accuracy of digital light processing printing of 3-dimensional dental models

2020 ◽  
Vol 157 (3) ◽  
pp. 422-428 ◽  
Author(s):  
Stephen L. Sherman ◽  
Onur Kadioglu ◽  
G. Frans Currier ◽  
J. Peter Kierl ◽  
Ji Li
Keyword(s):  
Digital Light Processing ◽  
3 Dimensional ◽  
Dental Models

Three-Dimensional Reconstruction Using Stereo Pairs from Serial Thick Sections

1977 ◽  
Vol 35 ◽  
pp. 562-563
Author(s):  
Robert Glaeser ◽  
Thomas Bauer ◽  
David Grano
Keyword(s):  
Three Dimensional ◽  
Dimensional Structure ◽  
Serial Sections ◽  
Thin Sections ◽  
3 Dimensional ◽  
Transmission Electron ◽  
Freeze Dried ◽  
Dimensional Reconstruction ◽  
Stereo Imagery ◽  
Whole Mounts

In transmission electron microscopy, the 3-dimensional structure of an object is usually obtained in one of two ways. For objects which can be included in one specimen, as for example with elements included in freeze- dried whole mounts and examined with a high voltage microscope, stereo pairs can be obtained which exhibit the 3-D structure of the element. For objects which can not be included in one specimen, the 3-D shape is obtained by reconstruction from serial sections. However, without stereo imagery, only detail which remains constant within the thickness of the section can be used in the reconstruction; consequently, the choice is between a low resolution reconstruction using a few thick sections and a better resolution reconstruction using many thin sections, generally a tedious chore. This paper describes an approach to 3-D reconstruction which uses stereo images of serial thick sections to reconstruct an object including detail which changes within the depth of an individual thick section.

Structural preservation and absolute contrast of catalase crystal sections prepared with tannic acid

1983 ◽  
Vol 41 ◽  
pp. 448-449
Author(s):  
C.W. Akey ◽  
M. Szalay ◽  
S.J. Edelstein
Keyword(s):  
Tannic Acid ◽  
Beef Heart ◽  
X Rays ◽  
Screw Axis ◽  
General Applicability ◽  
Thin Sections ◽  
Beef Liver ◽  
3 Dimensional ◽  
Dimensional Reconstruction ◽  
Structural Preservation

Three methods of obtaining 20 Å resolution in sectioned protein crystals have recently been described. They include tannic acid fixation, low temperature embedding and grid sectioning. To be useful for 3-dimensional reconstruction thin sections must possess suitable resolution, structural fidelity and a known contrast. Tannic acid fixation appears to satisfy the above criteria based on studies of crystals of Pseudomonas cytochrome oxidase, orthorhombic beef liver catalase and beef heart F1-ATPase. In order to develop methods with general applicability, we have concentrated our efforts on a trigonal modification of catalase which routinely demonstrated a resolution of 40 Å. The catalase system is particularly useful since a comparison with the structure recently solved with x-rays will permit evaluation of the accuracy of 3-D reconstructions of sectioned crystals.Initially, we re-evaluated the packing of trigonal catalase crystals studied by Longley. Images of the (001) plane are of particular interest since they give a projection down the 31-screw axis in space group P3121. Images obtained by the method of Longley or by tannic acid fixation are negatively contrasted since control experiments with orthorhombic catalase plates yield negatively stained specimens with conditions used for the larger trigonal crystals.

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