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Updated: Jan 25, 2026
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Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
Published on: April 29, 2014
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Precision of 3D-printed splints with different dental model offsets.
Niansong Ye1, Tingting Wu1, Ting Dong1
1Department of Orthodontics, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, People's Republic of China.
Summary
3D-printed dental splints fabricated with model offsets show improved fit compared to non-offset models. An offset of 0.1 mm provides the optimal precision for 3D printed splints.
Area of Science:
- Dental Technology
- Biomaterials Engineering
- Additive Manufacturing
Background:
- The precision of 3D-printed dental splints is crucial for clinical effectiveness.
- Dental model accuracy directly impacts the fit of fabricated splints.
Purpose of the Study:
- To evaluate the precision of 3D-printed splints created using varying dental model offsets.
- To determine the optimal offset distance for achieving superior splint fit.
Main Methods:
- Ten maxillary dental models were digitally offset by 0.05 mm, 0.1 mm, and 0.2 mm.
- Digital Light Processing (DLP) was used to fabricate physical splints.
- Impression material and 3D Euclidean distances were used to quantify splint-to-tooth fit and deviations.
Main Results:
- Statistically significant differences in impression material volume were observed across all offset groups (P < 0.05).
- Significant shell-to-shell deviations were found between the 0.05 mm offset and the 0.1 mm and 0.2 mm offset groups (P < 0.05).
Conclusions:
- 3D-printed splints from offset dental models demonstrate superior fit compared to those from non-offset models.
- An offset of 0.1 mm is identified as the optimal parameter for generating precise 3D-printed dental splints.
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