Short answer

When designing for PolyJet 3D printing in medical contexts, prioritize horizontal printing orientation to achieve the highest dimensional accuracy for critical components.

Field: Final Production
Source: 3D Printing in Medicine (2023)
Method: Comparative laboratory study
Evidence: Strong effect

Printing medical components with PolyJet technology in a horizontal orientation results in superior dimensional accuracy compared to vertical orientation. This final production research insight is drawn from a 2023 study published in 3D Printing in Medicine. Using Comparative laboratory study, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing for PolyJet 3D printing in medical contexts, prioritize horizontal printing orientation to achieve the highest dimensional accuracy for critical components.

Study

Final ProductionRecentStrong effect

Horizontal printing orientation enhances dimensional accuracy in PolyJet 3D medical models.

Printing medical components with PolyJet technology in a horizontal orientation results in superior dimensional accuracy compared to vertical orientation.

3D Printing in Medicine · 2023

Key Findings

01High print accuracy and reproducibility were observed for the printed discs.
02Print accuracy was highest when specimens were printed in the horizontal direction.
03All cytotoxicity tests confirmed low cytotoxicity of the 3D-printed objects, with mean cell viability well above 70% regardless of material and printing direction.

Application

Design takeaway

When designing for PolyJet 3D printing in medical contexts, prioritize horizontal printing orientation to achieve the highest dimensional accuracy for critical components.

How to apply

When specifying 3D printing for medical devices or implants, consider the printing orientation's impact on critical dimensions and select the orientation that yields the most accurate results for the intended application.

Project actions

01When planning your 3D printing for a design project, consider how the orientation of the part on the print bed might affect its final dimensions and surface finish.
02If your project involves creating functional prototypes or components for testing, investigate how different printing orientations could influence their performance.

Method & Evidence

AimTo investigate the effect of printing orientation on the dimensional accuracy, surface topography, and cytotoxicity of PolyJet 3D-printed medical samples.

MethodComparative laboratory study

ProcedureStandardized 3D-printed disc samples were produced using PolyJet technology in both horizontal and vertical printing orientations. Dimensional accuracy was assessed through size measurements and 3D optical profilometry. Surface topography was examined using scanning electron microscopy. Cytotoxicity tests were conducted using a representative cell line (L929), primary cells from clinically relevant tissues, and a Toxdent cytotoxicity assay.

ContextMedical 3D printing, specifically using PolyJet technology for fabricating components.

Variables

IVPrinting orientation (horizontal vs. vertical)

DVDimensional accuracy, surface topography, cytotoxicity

CVMaterial type, PolyJet printing technology, sample geometry (discs)

Strengths & Limitations

Strengths

+Utilized multiple assessment methods for print quality (dimensional, surface, biological).
+Included various cytotoxicity testing approaches for robust biological safety evaluation.

Limitations

The specific results may vary depending on the exact PolyJet printer model, material used, and the complexity of the printed object. This study focused on simple disc shapes.

Reliability & validity

The study's validity is supported by the use of standardized assessment methods and multiple cytotoxicity tests. Reliability is suggested by the reproducibility of dimensional measurements and consistent cytotoxicity results across different tests.

Think critically

While horizontal printing offers better accuracy, are there design constraints or functional requirements that might necessitate a vertical orientation, and how can these be mitigated?

Design Principles

"Optimize fabrication orientation to maximize dimensional accuracy in additive manufacturing for critical applications."

For critical medical applications, precise dimensional accuracy is paramount for device fit and function. Understanding how printing orientation impacts this accuracy allows designers and manufacturers to optimize production processes, ensuring higher quality and potentially reducing post-processing needs.

What This Means for Your Design

When 3D printing medical parts with PolyJet, printing them lying flat (horizontal) makes them more accurate than printing them standing up (vertical). The materials used are also safe for medical use.

How to use in your project

1.Reference this study when discussing the choice of 3D printing technology and parameters for your design project, particularly if accuracy is a key requirement.

Add to My Project

Quick Cite

Paragraph starter

The selection of 3D printing orientation significantly influences the dimensional accuracy of fabricated components. Research indicates that for PolyJet technology, a horizontal printing orientation generally yields superior dimensional precision compared to a vertical orientation, a critical factor for medical applications where exact fit and form are paramount. Furthermore, the materials commonly used in this technology have demonstrated low cytotoxicity, confirming their suitability for biomedical use.

Source

3D Printing in Medicine

Medical 3D printing with polyjet technology: effect of material type and printing orientation on printability, surface structure and cytotoxicity

journal · 2023

View source

Questions About This Research

What does the research say about horizontal printing orientation enhances dimensional accuracy in polyjet 3d medical models?: When designing for PolyJet 3D printing in medical contexts, prioritize horizontal printing orientation to achieve the highest dimensional accuracy for critical components. Evidence: 3D Printing in Medicine (2023).
Why does "Horizontal printing orientation enhances dimensional accuracy in PolyJet 3D medical models." matter for design?: For critical medical applications, precise dimensional accuracy is paramount for device fit and function. Understanding how printing orientation impacts this accuracy allows designers and manufacturers to optimize production processes, ensuring higher quality and potentially reducing post-processing needs.
How can designers apply this research?: When designing for PolyJet 3D printing in medical contexts, prioritize horizontal printing orientation to achieve the highest dimensional accuracy for critical components.
What were the main findings?: High print accuracy and reproducibility were observed for the printed discs.. Print accuracy was highest when specimens were printed in the horizontal direction.. All cytotoxicity tests confirmed low cytotoxicity of the 3D-printed objects, with mean cell viability well above 70% regardless of material and printing direction.
What research method was used?: Comparative laboratory study.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2023 journal from 3D Printing in Medicine.
What should I do differently in my next project?: When specifying 3D printing for medical devices or implants, consider the printing orientation's impact on critical dimensions and select the orientation that yields the most accurate results for the intended application.
What are the limitations?: The study focused on specific materials and a limited set of printing orientations. Further research could explore a wider range of materials, printing parameters, and complex geometries.