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Brief Report

Effect of Abutment Type and Tightening Sequence on Torque Maintenance Capacity after Mechanical Cycling in Splinted Implant-Supported Restorations

Institute of Science and Technology, São Paulo State University UNESP, São José dos Campos 12245-000, Brazil
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Academic Editors: Eugenio Pedullà, Joao Paulo Tribst and Javier Gil
Oral 2021, 1(4), 300-306; https://doi.org/10.3390/oral1040029
Received: 18 August 2021 / Revised: 22 September 2021 / Accepted: 30 September 2021 / Published: 11 October 2021
The aim of this study was to compare the screw removal torque of mini-conical prosthetic components and straight trunnion of indexed morse taper implants after mechanical cycling. The sample consisted of 40 implants and 20 mini-conical prosthetic components (MC group) and 20 straight trunnion components (ST group). Each group consisted of 10 specimens, with 2 implants in each, and cobalt–chromium metallic crowns were screwed into each sample. The components of the MC group received a torque of 20 N-cm with a digital torque wrench, and after 10 min were retightened with the same value as the initial torque. The components of the ST group received a torque of 30 N-cm, with a digital torque wrench, and after 10 min, they were retightened with the same value. The screws of the respective crowns of the two groups received a torque of 10 N-cm and after 10 min were retightened with the same value. Each group was subjected to the fatigue test in a mechanical cycler at 2,000,000 cycles, with a load of 250 N and frequency of 4 Hz. At the end of the fatigue test, the loosening torque of each screw of the specimens was measured through a digital torque wrench. The data were analyzed by two-way ANOVA and a Tukey test. In both groups, there were loss of torque. The results showed no statistic difference between MC and ST groups (p > 0.05). View Full-Text
Keywords: dental implants; fatigue; mechanical tests; torque; dentistry; oral surgery dental implants; fatigue; mechanical tests; torque; dentistry; oral surgery
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MDPI and ACS Style

Nakano, L.J.N.; Gomes, L.C.L.; de Queiroz, T.S.; Paes-Junior, T.J.d.A. Effect of Abutment Type and Tightening Sequence on Torque Maintenance Capacity after Mechanical Cycling in Splinted Implant-Supported Restorations. Oral 2021, 1, 300-306. https://doi.org/10.3390/oral1040029

AMA Style

Nakano LJN, Gomes LCL, de Queiroz TS, Paes-Junior TJdA. Effect of Abutment Type and Tightening Sequence on Torque Maintenance Capacity after Mechanical Cycling in Splinted Implant-Supported Restorations. Oral. 2021; 1(4):300-306. https://doi.org/10.3390/oral1040029

Chicago/Turabian Style

Nakano, Leonardo J.N., Laís C.L. Gomes, Talita S. de Queiroz, and Tarcisio J.d.A. Paes-Junior 2021. "Effect of Abutment Type and Tightening Sequence on Torque Maintenance Capacity after Mechanical Cycling in Splinted Implant-Supported Restorations" Oral 1, no. 4: 300-306. https://doi.org/10.3390/oral1040029

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