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Influence of Digital Manufacturing and Abutment Design on Full-Arch Implant Prostheses-An In Vitro Study
Shahad Altwaijri1, Hanan Alotaibi2, Talal M Alnassar2
1Department of Clinical Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
Materials (Basel, Switzerland)
|August 14, 2025
Summary
3D printing (3DP) frameworks offer superior implant-supported prosthesis fit compared to CAD-cast methods. This digital manufacturing technique may improve clinical outcomes by enhancing implant-abutment fit, reducing potential mechanical complications.
Area of Science:
- Biomaterials and Biomedical Engineering
- Dental Implantology
- Digital Dentistry
Background:
- Accurate fit of implant-supported prostheses is crucial for preventing mechanical complications.
- The impact of digital manufacturing and abutment design on prosthesis misfit and preload is not fully understood.
Purpose of the Study:
- To evaluate how different manufacturing techniques (CAD-cast vs. 3D printing) and abutment connections (engaging vs. non-engaging) affect misfit and preload in implant-supported cantilevered fixed dental prostheses (ICFDPs).
Main Methods:
- Misfit was measured using scanning electron microscopy.
- Preload was assessed using strain gauges on four implants.
- Frameworks underwent static torque, retorquing, and cyclic loading.
Main Results:
- 3D printing (3DP) frameworks demonstrated superior fit over CAD-cast frameworks.
- Significant differences in misfit were observed between manufacturing techniques and abutment types.
- Preload values varied, but differences between groups were not statistically significant.
Conclusions:
- 3D printing technology shows promise for improving implant-abutment fit in dental prostheses.
- This enhanced fit may lead to better clinical outcomes and reduced mechanical complications.
