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Hip replacement surgery is a common procedure that relies on the implant's design to withstand daily activities. This study aims to investigate the impact of different surface groove designs on the performance of solid hip implants using finite element analysis (FEA) and optimization techniques. The study evaluates the influence of grooves on the stress distribution and total deformation of the implant, considering three designs: no grooves, horizontal grooves, and vertical grooves on the surface of the femoral head. The simulations were conducted using Ansys Mechanical, and the optimization process was carried out using the general full factorial design method in Minitab software. The results demonstrate that the groove design significantly affects the stress distribution and wear of the implant. The vertical groove design shows better overall results, indicating the best performance. The study also evaluated the influence of force on the performance of the implant, with different load range. The optimization process using the general full factorial design method revealed that the optimal groove design was a vertical model with an optimized groove depth and width. These findings offer valuable insights into the impact of surface groove designs on the performance of solid hip implants, leading to better patient outcomes and longer implant lifespan. Overall, this study provides a comprehensive understanding of the effect of surface groove design on the performance of solid hip implants.

Background/Aim: Anterior teeth are prone to traumatic injuries. Their management is necessary in order to maintain the pulp and esthetics. Various methods have been reported for fragment reattachment of fractured teeth but there is no consensus on which is the best technique. The aim of this study was to compare the force required to fracture reattached fragments using polyethylene fibers in vertical grooves on the external surface of teeth, fiber‐reinforced composite post and circumferential chamfer. Material and Methods: Forty‐eight extracted maxillary central incisors were sectioned using a disk and randomly divided into 4 groups (n = 12): Group 1: control group, Group 2: reattachment followed by placement of two external vertical grooves on the labial surface and restored with polyethylene fibers and hybrid composite, Group 3: reattachment followed by two external vertical grooves and filled with fiber posts and composite, and Group 4: reattachment followed by circumferential chamfer at the fracture line and restored with composite. The forces required to fracture the reattached fragments were measured using a Universal testing machine. Data were analyzed using the Kruskal–Wallis test. Pairwise multiple comparison procedure was done using the Student–Newman–Keuls Method. Results: The highest values for force required to fracture were observed in the fiber post group and the lowest in the Ribbond group (p <.05). The fiber post group had significantly different results compared to the Ribbond and Chamfer preparation groups (p <.05). However, the difference of rank between the fiber post and control groups was not significantly different (p >.05). Conclusion: The force required to fracture the fiber post group was closest to that of intact teeth followed by the chamfer and Ribbond groups, respectively. [ABSTRACT FROM AUTHOR]

Hip replacement surgery is a common procedure that relies on the implant's design to withstand daily activities. This study aims to investigate the impact of different surface groove designs on the performance of solid hip implants using finite element analysis (FEA) and optimization techniques. The study evaluates the influence of grooves on the stress distribution and total deformation of the implant, considering three designs: no grooves, horizontal grooves, and vertical grooves on the surface of the femoral head. The simulations were conducted using Ansys Mechanical, and the optimization process was carried out using the general full factorial design method in Minitab software. The results demonstrate that the groove design significantly affects the stress distribution and wear of the implant. The vertical groove design shows better overall results, indicating the best performance. The study also evaluated the influence of force on the performance of the implant, with different load range. The optimization process using the general full factorial design method revealed that the optimal groove design was a vertical model with an optimized groove depth and width. These findings offer valuable insights into the impact of surface groove designs on the performance of solid hip implants, leading to better patient outcomes and longer implant lifespan. Overall, this study provides a comprehensive understanding of the effect of surface groove design on the performance of solid hip implants., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)