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Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization

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Accuracy of cone beam computed tomography-derived casts: A comparative study.

Sohaib Shujaat¹, Eman Shaheen², Felipe Novillo³

¹Doctoral candidate, OMFS-IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven & Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.

The Journal of Prosthetic Dentistry

|February 12, 2020

Summary

Cone beam computed tomography (CBCT)-derived mandibular casts accurately replicate external and dental anatomy. However, the internal trabecular architecture accuracy requires further investigation for clinical application.

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Area of Science:

Dental Technology
Medical Imaging
Additive Manufacturing

Background:

The accuracy of cone beam computed tomography (CBCT)-derived dentomaxillofacial casts, particularly their external and internal trabecular architecture, remains under-investigated.
Evaluating the quantitative accuracy of CBCT-derived mandibular casts is crucial for reliable clinical applications.

Observation:

A comparative study assessed the accuracy of 15 3D-printed mandibular casts derived from CBCT data using a landmark-free methodology.
Various 3D printing technologies were employed, including Multijet (MJ), Digital Light Processing (DLP), Stereolithography (SLA), Fused Deposition Modeling (FDM), Colorjet (CJ), and Selective Laser Sintering (LS).

Findings:

Multijet (MJ) printing technology demonstrated the highest accuracy (0.6 ±0.7 mm) for complete mandibular casts.
Fused Deposition Modeling (FDM) exhibited the highest overall absolute mean difference (2.2 ±3.4 mm).
No significant differences in accuracy were found between individual surfaces and the complete mandible across printing technologies.

Implications:

CBCT-derived casts effectively replicate external skeletal and dental anatomical surfaces.
Limitations exist in accurately depicting the internal trabecular bone architecture, necessitating further research for applications requiring detailed internal structure analysis.