含或不含纳米氧化锆的 3D 打印聚氨酯正畸托槽与传统金属和陶瓷托槽的摩擦阻力比较：体外研究

IF 1.8 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Orthodontics Pub Date : 2025-03-31 DOI:10.1016/j.ortho.2025.101001

Srinidhi Ramasundaram, Dilip Srinivasan, Ravi Kannan, Devasahayam Davis

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摘要

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Comparison of the friction resistance of 3D-printed polyurethane orthodontic brackets with and without zirconium oxide nanoparticles with conventional metal and ceramic brackets: An in vitro study

Aim

To compare the frictional resistance of 3D-printed zirconium oxide nanoparticles reinforced polyurethane orthodontic brackets, 3D-printed Polyurethane orthodontic brackets, conventional metal and ceramic brackets in an in vitro environment.

Methods

Stereolithography was used to 3D print the polymer orthodontic brackets and zirconium oxide-reinforced polymer orthodontic brackets. Conventional metal brackets and conventional ceramic brackets were used as controls. The frictional force between the bracket and the archwire was measured under dry conditions with an Instron universal testing machine with a sliding velocity of 1 mm/minute and a load cell of 50 N. The Kruskal-Wallis test with post hoc test (Mann-Whitney U test) was used for statistical analyses (significance level P < 0.05).

Results

There is no significant difference observed between 3D-printed zirconium oxide-reinforced polymer orthodontic brackets and 3D-printed polymer orthodontic brackets. The frictional resistance was found to be the least in 3D-printed polyurethane brackets (1.3895 + 0.72583 N), followed by 3D-printed zirconium oxide-reinforced polyurethane brackets (2.15 + 0.75683 N), conventional metal brackets (2.348 + 0.82682 N), and it was highest in conventional ceramic brackets (4.9675 + 0.88519 N).

Conclusions

The incorporation of zirconium oxide nanoparticles increased the frictional resistance of 3D-printed polymer orthodontic brackets, but it was not statistically significant. Hence, zirconium oxide nanoparticles could be considered as a better reinforcement for polymer brackets for enhanced clinical utility.

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来源期刊

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.