Barbed Dental Ti6Al4V Alloy Screw: Design and Bench Testing

Abstract

[EN] Background context. Dental implants are designed to replace a missing tooth. Implant stability is vital to achieving osseointegration and successful implantation. Although there are many implants available on the market, there is room for improvement. Purpose. We describe a new dental implant with improved primary stability features. Study design. Lab bench test studies. Methods. We evaluated the new implant using static and flexion-compression fatigue tests with compression loads, 35 Ncm tightening torque, displacement control, 0.01 mm/s actuator movement speed, and 9-10 Hz load application frequency, obtaining a cyclic load diagram. We applied variable cyclic loadings of predetermined amplitude and recorded the number of cycles until failure. The test ended with implant failure (breakage or permanent deformation) or reaching five million cycles for each load. Results. Mean stiffness was 1151.13 +/- 133.62 SD N/mm, mean elastic limit force 463.94 +/- 75.03 SD N, and displacement 0.52 +/- 0.04 SD mm, at failure force 663.21 +/- 54.23 SD N and displacement 1.56 +/- 0.18 SD mm, fatigue load limit 132.6 +/- 10.4 N, and maximum bending moment 729.3 +/- 69.43 mm/N. Conclusions. The implant fatigue limit is satisfactory for incisor and canine teeth and between the values for premolars and molars for healthy patients. The system exceeds five million cycles when subjected to a 132.60 N load, ensuring long-lasting life against loads below the fatigue limit.