Effect of different sandblasting parameters on the surface roughness of medical-grade Grade 4 pure titanium

doi:10.12337/zgkqzzxzz.2024.12.015

Abstract

Abstract: Objective This study investigates the effect of different sandblasting parameters on the surface roughness of medical-grade Grade 4 pure titanium, aiming to provide reference data for optimizing SLA(sandblasted, large-grit, acid-etched) surface characteristics. Methods Alumina particles were used in an orthogonal experimental design to analyze the effects of particle size, pressure, distance, and time on the surface roughness average (Ra) of Grade 4 pure titanium. Range analysis and variance analysis were performed to evaluate the impact of each parameter. Results The surface roughness with Ra value of 1.083~2.494 μm can be obtained within the range of factor levels in this experiment. The lowest surface roughness (Group A) was achieved with 100-mesh particles, 0.2 MPa pressure, a distance of 50 mm, and a duration of 60 seconds. The highest surface roughness (Group B) was observed with 60-mesh particles, 0.4 MPa pressure, a distance of 100 mm, and a duration of 15 seconds. Conclusion Within the range of parameter levels examined in this study, surface roughness decreased with increasing particles size and blasting time, while it increased with higher pressure and longer blasting distance.

Key words: Dental implant, Sandblasting, Pure titanium, Orthogonal experiment, Surface roughness

Liu Qiqi, Zhao Yujia, Qiu Lin, Hao Junjiang, Su Hanqi, Han Zekui, Wang Xinyu, Su Yucheng. Effect of different sandblasting parameters on the surface roughness of medical-grade Grade 4 pure titanium[J]. Chinese Journal of Oral Implantology, 2025, 29(6): 555-560.

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