scholarly journals Visuo-tactile system for 3D digital models rendering

2015 ◽  
Vol 13 (2) ◽  
pp. 236-245
Author(s):  
Alessandro Mansutti ◽  
Mario Covarrubias Rodriguez ◽  
Giandomenico Caruso ◽  
Monica Bordegoni ◽  
Umberto Cugini
Keyword(s):  
Digital Models ◽  
Tactile System ◽  
3D Digital Models

scholarly journals Visuo-Tactile System for 3D Digital Models Rendering

2015 ◽  
Author(s):  
Alessandro Mansutti ◽  
Mario Rodriguez ◽  
Giandomenico Caruso ◽  
Monica Bordegoni ◽  
Umberto Cugini
Keyword(s):  
Digital Models ◽  
Tactile System ◽  
3D Digital Models

scholarly journals Evaluation of Occlusal Contacts among Different Groups of Malocclusion using 3D Digital Models

2014 ◽  
Vol 15 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Naim Z Al-Rayes ◽  
Mohammad Y Hajeer
Keyword(s):  
Class Ii ◽  
Sexual Differences ◽  
Class I ◽  
Stepwise Multiple Regression ◽  
Regression Equations ◽  
Class Iii ◽  
Digital Models ◽  
Arch Width ◽  
Division 1 ◽  
3D Digital Models

ABSTRACT Objectives (1) To evaluate the applicability of using 3D digital models in the assessment of the magnitude of occlusal contacts by measuring occlusal contact surface areas (OCSAs) and 3D mesh points in ‘contact’ (OCMPs) in a sample of orthodontic patients; (2) To detect any sex differences in the magnitude of occlusal contacts in all malocclusion groups; (3) To detect intergroup differences; (4) To assess possible correlations between occlusal contacts and other dental characteristics. Materials and methods Study casts of 120 malocclusion patients were selected and divided into 4 groups (class I division 1, class II division 1, class II division 2, class III) with equal numbers for both sexes. 3D digital models were produced using O3DM™ technology. Occlusal contacts were quantified using two methods of measuring. Results (1) No significant sexual differences were detected for OCMPs (mesh points) and OCSAs (mm2) in all groups. (2) There were statistically significant differences among malocclusion groups for OCMPs and OCSAs (p < 0.001). Tukey's HSD posthoc tests showed that class III patients had significantly less occlusal contacts than other malocclusion groups. (3) Stepwise multiple regression equations showed that overjet, lower arch width and overbite could explain approximately 19.5% of the total variance of OCSAs and OCMPs. Conclusion Sexual differences in occlusal contacts were not detected. Class I division 1 patients had the highest amount of occlusal contacts among all groups of malocclusion. Overjet, overbite and lower dental arch width were best predictors of occlusal contacts in the current sample. How to cite this article Al-Rayes NZ, Hajeer MY. Evaluation of Occlusal Contacts among Different Groups of Malocclusion using 3D Digital Models. J Contemp Dent Pract 2014;15(1):46-55.

Can the intra-examiner variability of Little's Irregularity Index be improved using 3D digital models of study casts?

2013 ◽  
Vol 41 (12) ◽  
pp. 1271-1280 ◽  
Author(s):  
Adam H. Dowling ◽  
Angus Burns ◽  
Donal Macauley ◽  
Thérèse M. Garvey ◽  
Garry J.P. Fleming
Keyword(s):  
Digital Models ◽  
Irregularity Index ◽  
3D Digital Models

scholarly journals Promoting a More Interactive Public Archaeology

2015 ◽  
Vol 3 (3) ◽  
pp. 235-248 ◽  
Author(s):  
Bernard K. Means
Keyword(s):  
Narrow Band ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Public Archaeology ◽  
Archaeological Sites ◽  
Digital Models ◽  
The Past ◽  
Fresh Perspective ◽  
Virginia Commonwealth University ◽  
3D Digital Models

AbstractStewards of the tangible past are increasingly embracing technologies that enable digital preservation of rare and fragile finds. The Virtual Curation Laboratory (VCL) at Virginia Commonwealth University (VCU) partners with museums, cultural heritage locations, and collections repositories to create three-dimensional (3D) digital models of artifacts from archaeological sites distributed across the globe. In the VCL, undergraduate VCU students bring a fresh perspective unburdened by archaeological orthodoxy as they use a laser scanner to record artifact details, edit the resulting digital models, and print plastic replicas that are painted to resemble the original items. The 3D digital models and printed replicas allow for new ways of visualizing the past, while preserving the actual artifacts themselves. These forms of archaeological visualization enable the broader public and not just a narrow band of researchers to dynamically and meaningfully interact with rare and fragile objects in ways that would otherwise not be possible, empowering their own contributions to interpreting, understanding, and reimagining the past. We must embrace co-creation through virtual artifact curation and recognize that, while we sacrifice some control over the stories that are told about the past, more stories will be told and shared as pieces of the past become more accessible.

A Fast Mask Projection Stereolithography Process for Fabricating Digital Models in Minutes

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
Yayue Pan ◽  
Chi Zhou ◽  
Yong Chen
Keyword(s):  
High Speed ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Thin Layers ◽  
Digital Models ◽  
Projection System ◽  
Order Of Magnitude ◽  
Projection Stereolithography ◽  
Direct Digital Manufacturing ◽  
3D Digital Models

The purpose of this paper is to present a direct digital manufacturing (DDM) process that is an order of magnitude faster than other DDM processes that are currently available. The developed process is based on a mask-image-projection-based stereolithography (MIP-SL) process, in which a digital micromirror device (DMD) controls projection light to selectively cure liquid photopolymer resin. In order to achieve high-speed fabrication, we investigate the bottom-up projection system in the MIP-SL process. A two-way linear motion approach has been developed for the quick spreading of liquid resin into uniform thin layers. The system design and related settings for achieving a fabrication speed of a few seconds per layer are presented. Additionally, the hardware, software, and material setups for fabricating three-dimensional (3D) digital models are presented. Experimental studies using the developed testbed have been performed to verify the effectiveness and efficiency of the presented fast MIP-SL process. The test results illustrate that the newly developed process can build a moderately sized part within minutes instead of hours that are typically required.

Growing images: generating 3D digital models to investigate archaeological Moriori carvings on live trees

2014 ◽  
Vol 46 (1) ◽  
pp. 63-77 ◽  
Author(s):  
Ian G. Barber ◽  
Justin Maxwell ◽  
Richard Hemi
Keyword(s):  
Digital Models ◽  
3D Digital Models

scholarly journals 3D Printing of Human Microbiome Constituents to Understand Spatial Relationships & Shape Parameters in Bacteriology

2021 ◽  
Vol 83 (3) ◽  
pp. 188-190
Author(s):  
Jacques Izard ◽  
Teklu Kuru Gerbaba ◽  
Shara R. P. Yumul
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Human Microbiome ◽  
Digital Models ◽  
Ecological Relationships ◽  
Wide Range ◽  
3D Printers ◽  
Visuospatial Information ◽  
Aided Design ◽  
3D Digital Models

Effective laboratory and classroom demonstration of microbiome size and shape, diversity, and ecological relationships is hampered by a lack of high-resolution, easy-to-use, readily accessible physical or digital models for use in teaching. Three-dimensional (3D) representations are, overall, more effective in communicating visuospatial information, allowing for a better understanding of concepts not directly observable with the unaided eye. Published morphology descriptions and microscopy images were used as the basis for designing 3D digital models, scaled at 20,000×, using computer-aided design software (CAD) and generating printed models of bacteria on mass-market 3D printers. Sixteen models are presented, including rod-shaped, spiral, flask-like, vibroid, and filamentous bacteria as well as different arrangements of cocci. Identical model scaling enables direct comparison as well as design of a wide range of educational plans.

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