Volume: 5, 2026
5th International PhD Students’ Conference at the University of Life Sciences in Lublin, Poland:
ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: T010
DOI: https://doi.org/10.24326/ICDSUPL5.T010
Published online: 22 April 2026
The impact of filler content on the durability of 3d-printed dental resins
Andrzej Snarski-Adamski*1, Zbigniew Krzysiak1, Daniel Pieniak2 and Marcel Firlej3
1 Department of Mechanical Engineering and Automation, Faculty of Production Engineering, University of Life Sciences in Lublin, 28 Głęboka St., 20-612 Lublin, Poland
2 Faculty of Safety Engineering and Civil Protection, Fire University, 52/54 Słowacki St., 01-629 Warsaw, Poland
3 Department of Craniofacial Anomalies, Poznan University of Medical Sciences, 70 Bukowska St., 60-812 Poznan, Poland
* Corresponding author: andrzej.snarski@up.edu.pl
Digital Light Processing (DLP) 3D printing enables the precise fabrication of temporary crowns and orthodontic devices. However, their clinical longevity depends heavily on tribological wear resistance and mechanical stability within the dynamic oral environment. This study evaluates the effect of inorganic filler content and physiological environmental factors on the tribological performance of DLP-printed dental polymers.
Commercial photopolymers (including VarseoSmile Temp, Gr-17.1, Gr-17, GR-10, and NextDent SG) with varying filler concentrations were tested. Sliding friction and wear tests were conducted under simulated intraoral conditions (37 °C, 90% relative humidity) using an SRV 4 tester. Additional evaluations included microhardness assessments, surface topography via white light interferometry, and step-loading scratch tests utilizing a Rockwell indenter. Results demonstrated that resins with a higher inorganic filler content (e.g., 30-50 wt% silanized glass) exhibited significantly greater microhardness, superior elastic recovery, and the lowest volumetric wear (0.025 mm3) compared to low-filler counterparts. Interestingly, the coefficient of friction did not directly correlate with volumetric wear; materials with high stabilized friction coefficients (~0.8) showed minimal material loss, indicating that microstructural reinforcement dictates surface durability. Furthermore, physiological conditions (37 °C and high humidity) critically influenced the deformation and wear behavior, highlighting the synergistic effect of the oral environment on polymer degradation. Incorporating optimal levels of inorganic fillers significantly enhances the tribological resistance of 3D-printed dental resins. Testing under physiologically relevant conditions is essential for accurately predicting the clinical lifespan and functional stability of additive-manufactured temporary restorations.
This work was supported by funds from the Doctoral School of the University of Life Sciences in Lublin (Project No. SD.WTKG.25.135).
Keywords: dental polymers; DLP 3D printing; temporary crowns; wear resistance
How to cite
Snarski-Adamski A., Krzysiak Z., Pieniak D., Firlej M., 2026. The impact of filler content on the durability of 3d-printed dental resins. In: 5th International PhD Students’ Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL5.T010