Abstract
f Thread Geometry in the Compressive Strength of Dental Implants. Biomat. J., 4 (5), 6 – 15 (2025). https://doi.org/10.5281/zenodo.18077433 Received: 10 December 2025 Accepted: 22 December 2025 Published: 29 December 2025 Type of the Paper (Research Article) Role of Thread Geometry in the Compressive Strength of Dental Implants Adil Elmokhtar A Esslami 1* , Asaad Nuri Elbalog 2 , Sirageddin mohamed alhmadi 3 1 Oral and Maxillofacial Surgery Department, Faculty of Dentistry, University of Tripoli, Tripoli, Libya 2 Periodontology Department, Faculty of Dentistry, University of Tripoli, Tripoli, Libya 3 Prosthodontic Department, Faculty of Dentistry, University of Tripoli, Tripoli, Libya * Corresponding author e-mail: [email protected] Abstract: The objective of this study was to evaluate the effect of different dental implant thread geometries on the compressive strength of dental implants. Based on thread form, sixty custom-made grade 4 titanium dental implant screws were prepared and grouped into; V- Shape (Group 1), Square Shape (Group 2), Buttress Shape (Group 3), and Reverse Buttress Form (Group 4); Standard lab analysis set up as recommended in ISO14801. The implants were embedded in an acrylic block and tested under a 30 °off-axis compression load. The compressive strength test was carried out using a Universal Testing Machine (UTM). The resulting data were analyzed by one-way ANOVA followed by Tukey's test. The results showed that Group 1 (V-Shape) was found to be statistically significantly higher than Group 2 (Square Shape Threads) and Group 3 (Buttress Thread Shapes). Group 4 (Reverse Buttress Shapes) was found to be statistically significantly higher than Group 2 and Group 3. There is no statistically significant difference between Group 2 and Group 3 (p>0.05). There is no statistically significant difference between Group 1 and Group 4 (p>0.05). The results of this study suggest that various thread designs may play a critical role in the fracture load of implants under static load, where the reverse buttress and V-shape thread designs show better resistance than the other shapes.