Beyond the Buzz

In recent years, U-shaped kids’ toothbrushes have surged in popularity, often marketed with claims of faster and more efficient brushing, full mouth coverage, less manual effort, appealing to parents eager for simpler routines. The appeal is clear: faster, easier brushing for kids. But from a clinical standpoint, the critical question is not convenience—it’s efficacy.

Many U-shaped toothbrushes rely primarily on vibration rather than true brushing mechanics, which can limit plaque removal, particularly along the gingival margin and posterior teeth. Clinical evaluation of an automatic U-shaped device has demonstrated inadequate bristle contact with dental and gingival surfaces, resulting in minimal plaque reduction.¹ Additionally, traditional U-shaped toothbrushes often require users to move the device to achieve full coverage, making effectiveness dependent on technique. In clinical comparisons, these devices have performed no better—and sometimes worse—than manual brushing. 

Developed by dental professionals, Willo was designed to replicate the optimal mechanical brushing motion—automatically and consistently. Its patented full-arch system integrates controlled motion, precise bristle orientation, and automated timing to ensure every brushing session delivers a complete clean. 

In clinical testing, Willo removed up to 7 times more plaque in hard-to-reach areas than manual brushing²—a result driven by engineering precision, not shape. Bristles are angled toward the gumline to effectively disrupt plaque, while a built-in dosing and evacuation system ensures proper toothpaste delivery and a clean finish.

A smarter approach for pediatric oral care

For dental professionals, Willo offers a proven solution for improving brushing consistency, compliance, and plaque control—especially for children with developing dexterity or low motivation.

Key TAKEAWAYS

➊  True automatic brushing: Willo’s mechanism guides bristles in a controlled, dentist-recommended Bass-like motion along the gumline.

➋  Comprehensive coverage: The flexible OptiClean brush head is shaped to fit the natural curvature of the dental arch, brushing facial and lingual surfaces — including posterior molars — simultaneously.

➌  Consistency by design: Each session lasts a full two minutes with uniform pressure and motion on every tooth.

Manufacturer Information

Willo
willo.com
888-509-0459

References

1. Nieri M, Giuntini V, Pagliaro U, et al. Efficacy of a U-Shaped Automatic Electric Toothbrush in Dental Plaque Removal: A Cross-Over Randomized Controlled Trial. Int J Environ Res Public Health. 2020 Jun 28;17(13):4649.

2. U.S. Investigational Review Board, Inc. Evaluation and Comparison of a Novel Power Toothbrush on Plaque Removal. https://cdn.shopify.com/s/files/1/0585/6798/3178/files/Willo_WCS-1001_Investigator_Final_Report.pdf. Accessed December 18, 2025.