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Comparative Analysis between 3D-Printed Models Designed with Generic and Dental-Specific Software.

Cristian Abad-Coronel¹, Doménica Patricia Pazán², Lorena Hidalgo²

¹CAD/CAM Materials and Digital Dentistry Research Group, Faculty of Dentistry, Universidad de Cuenca, Cuenca 010107, Ecuador.

Dentistry Journal

|September 27, 2023

Summary

This study compared generic (G-CAD) and dental-specific (D-CAD) software for digital dentistry, finding no significant accuracy differences. However, specific dental software combinations demonstrated higher precision and trueness in 3D model accuracy.

Keywords:

3D models CAD/CAM STL dental software digital workflow

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Area of Science:

Digital dentistry
Computer-aided design (CAD) software
3D modeling and printing

Background:

Growing demand for dental software necessitates precision studies.
Limited comparative research exists on generic (G-CAD) versus dental-specific (D-CAD) software applications.
Understanding software accuracy is crucial for advancing digital dentistry.

Purpose of the Study:

To investigate accuracy differences between digital impressions from G-CAD and D-CAD software.
To compare the precision of specific dental CAD software against general CAD applications.
To address the knowledge gap regarding the application and accuracy of various dental software.

Main Methods:

Digitizing a typodont and exporting models to four software types (MeshMixer, Exocad, Blender, InLAB).
Materializing STL files via 3D printing, followed by rescanning to create new STL files.
Comparing six groups of models using 3D analysis software (Geomagic Control X) with best-fit superimposition.

Main Results:

No statistically significant accuracy differences were found among the four software types.
A D-CAD combination (Blender-InLAB) showed the highest average accuracy (-0.0324).
A generic/specific software combination (Meshmixer/Blender) exhibited the lowest average accuracy (0.1024).

Conclusions:

While no significant overall accuracy difference exists between G-CAD and D-CAD, specific dental software combinations yield superior precision and trueness.
The study identified greater tolerance in groups utilizing D-CAD software.
Further research may explore specific software combinations for optimal digital dental workflows.