Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Straight Reverse Torque Value
2.2. Angulated Reverse Torque Value and Cyclic Loading
2.3. Microscope and SEM Examination
Statistical Analysis
3. Results
3.1. Straight Reverse Torque Value Percentage Difference
3.2. Angulated Reverse Torque Value and RTV Difference after Cyclic Loading
3.3. Microscope and SEM Examination
4. Discussion
5. Conclusions
- The ASC angle will affect the actual preload acting on the abutment screw and the larger the ASC angle, the lower the preload.
- The RTV of the ASC of all groups decreased after cyclic loading, and there was no significant difference between the 0° and angled groups. Thus, the performance of angled ASCs after cyclic loading was comparable to that of 0° ASC.
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Group | Mean sRTV | Mean sRTV Percentage Difference | Median sRTV Percentage Difference |
---|---|---|---|
sASC-0 | 29.1 ± 0.43 | −17.6 ± 2.6 | −16.9 |
sASC-15 | 26.4 ± 0.91 | −24.5 ± 2.6 | −25.6 |
sASC-25 | 24.5 ± 0.23 | −29.9 ± 0.6 | −29.7 |
Group | Mean bRTV | Mean RTV Difference after Cyclic Loading | Median RTV Difference after Cyclic Loading |
---|---|---|---|
ASC-0 | 28.84 ± 0.91 | −2.41 ± 1.68 | −2.95 |
ASC-15 | 28.87 ± 1.43 | −2.70 ± 1.44 | −2.13 |
ASC-25 | 27.14 ± 0.80 | −1.38 ± 1.40 | −1.78 |
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Chen, Y.-H.; Wu, Y.-L.; Chen, H.-S.; Lin, C.-P.; Wu, A.Y.-J. Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study. J. Funct. Biomater. 2023, 14, 124. https://doi.org/10.3390/jfb14030124
Chen Y-H, Wu Y-L, Chen H-S, Lin C-P, Wu AY-J. Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study. Journal of Functional Biomaterials. 2023; 14(3):124. https://doi.org/10.3390/jfb14030124
Chicago/Turabian StyleChen, Yu-Hsuan, Yu-Ling Wu, Hung-Shyong Chen, Ching-Ping Lin, and Aaron Yu-Jen Wu. 2023. "Reverse Torque Value of Angulated Screw Channel Abutment before and after Cyclic Loading: An In Vitro Study" Journal of Functional Biomaterials 14, no. 3: 124. https://doi.org/10.3390/jfb14030124