Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Modeling and Similitude

Modeling and Similitude

Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

5-Year Clinical Outcomes of Three-Unit Posterior Zirconia- Ceramic Fixed Dental Prostheses: A Randomized Trial Comparing Manually and CAD/CAM Layered Veneering.

International journal of computerized dentistry·2026

Same author

Complete arch accuracy of six intraoral scanning devices: A clinical study.

The Journal of prosthetic dentistry·2026

Same author

An in-vitro study on factors influencing the accuracy of current intraoral scanners.

Scientific reports·2025

Same author

Accuracy of current intraoral scanning systems for full-arch impressions: An in vitro study.

Journal of dentistry·2025

Same author

Impact of the sintering parameters on the grain size, crystal phases, translucency, biaxial flexural strength, and fracture load of zirconia materials.

Journal of the mechanical behavior of biomedical materials·2024

Same author

Is Diet a Determining Factor in the Induction of Gingival Inflammation by Dental Plaque? A Secondary Analysis of Clinical Studies.

Nutrients·2024

Search research articles

Related Experiment Video

Updated: Mar 3, 2026

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Published on: August 24, 2018

A validation study of reconstructed rapid prototyping models produced by two technologies.

Christian Andreas Dietrich, Andreas Ender, Stefan Baumgartner

The Angle Orthodontist

|May 2, 2017

Summary

This study compared stereolithography (SLA) and PolyJet rapid prototyping for 3D orthodontic models. PolyJet offered better trueness, while SLA provided superior precision, with both suitable for diagnostics and treatment planning.

Keywords:

3D printing Dental casts Rapid prototyping Stereolithography

More Related Videos

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Published on: June 27, 2014

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Published on: August 29, 2025

Related Experiment Videos

Last Updated: Mar 3, 2026

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Published on: August 24, 2018

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Published on: June 27, 2014

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Published on: August 29, 2025

Area of Science:

Orthodontics
Biomedical Engineering
Digital Dentistry

Background:

Accurate 3D digital orthodontic study casts are crucial for diagnostics and treatment planning.
Rapid prototyping (RP) offers a method for physical reproduction of these digital models.
Evaluating the accuracy of different RP techniques is essential for clinical application.

Purpose of the Study:

To compare the accuracy (trueness and precision) of stereolithography (SLA) and PolyJet rapid prototyping systems.
To assess the physical reproduction fidelity of three-dimensional (3D) digital orthodontic study casts using two different RP techniques.
To determine the suitability of these RP techniques for clinical orthodontic applications.

Main Methods:

Two 3D STL files of maxillary dentitions were used as references.
Five rapid prototyping replicas were fabricated per case using both SLA and PolyJet systems.
Surface superimpositions and statistical analyses (independent-sample t-tests) were performed to evaluate trueness and precision.

Main Results:

Both SLA and PolyJet systems demonstrated statistically significant differences in trueness and precision.
Precision was high for both systems, with mean deviations of 23 (±6) μm for SLA and 46 (±13) μm for PolyJet.
PolyJet replicas showed higher trueness (mean deviation 66 ±14 μm) compared to SLA models (109 ±4 μm).

Conclusions:

PolyJet rapid prototyping exhibited superior trueness in reproducing digital orthodontic models compared to SLA.
Stereolithography (SLA) demonstrated higher precision in the physical reproduction of these models.
Despite observed dimensional errors (max 127 μm), both SLA and PolyJet techniques are deemed suitable for orthodontic diagnostics and treatment planning.