Authors:Mohammad Fahad, Richard Nagy, and Peter Fuleki
Impacts of autonomous truck’s passes on pavement have been analyzed in this research. Two types of lateral positioning namely zero wander and uniform wander along with a super single wide tire and a dual tire have been analyzed with variable traffic speeds in ABQUS. The study concludes with the results in favor of usage of a super single wide tire under a uniform wander mode. The highest amount of pavement damage in terms of maximum rut depth is caused by the dual wheel assembly moving under a zero-wander mode. The magnitude of rut depth increases by a factor of two when a dual tire assembly is used instead of a wide tire assembly. At a uniform wander mode, rut depth increases by 0.2 mm for every 10 km/h decrease in traffic speed within 90 km/h to 70 km/h range.
Authors:Mohammad Alshehri, Fahad Ali Alshehri, and Faisal Alshail
The aim of the present short-term follow-up study was to assess the effect of scaling and root planing (SRP) with and without adjunct use of an essential-oil-based mouthwash (EOBM) on whole salivary interleukin (IL)-1beta (β) levels in patients with periodontal disease.
Ninety individuals with periodontal disease were divided into two groups. Patients in group 1 underwent SRP and were instructed to rinse with 10 mL of an EOBM twice daily for 30 days. Patients in group 2 underwent SRP and were instructed to rinse with 10 mL of water twice daily for 30 days. Whole saliva samples were collected, and IL-1β levels were measured at baseline and after 60 days of treatment. P-values < 0.05 were considered statistically significant.
At baseline, whole salivary IL-1β levels were comparable among patients in groups 1 (135.6 ± 13.5 μg/mL) and 2 (141.2 ± 5.4 μg/mL). After 60 days of follow-up, there is a significant decrease in whole salivary IL-1β levels among patients in group 1 (10.2 ± 6.4 μg/mL) as compared to those in group 2 (56.6 ± 10.2 μg/mL) (P < 0.01).
SRP, when performed with adjunct use of an EOBM, is more effective in reducing whole salivary IL-1β levels as compared to when SRP is performed without the use of an EOBM.