8 Best Electric Toothbrushes Tested: Philips Sonicare 9400 and Oral-B iO3 Top Picks
8 Best Electric Toothbrushes Tested: Philips Sonicare 9400 and Oral-B iO3 Top Picks

Upgrading your oral care with an electric toothbrush can improve teeth whitening and interdental cleaning. Dentist Dr Hannan Imran notes that “evidence shows powered brushes reduce plaque and gingivitis more than manual brushes, and pressure feedback reduces the risk of excessive force on the gums.” Dr Edoardo Felici adds that “most dentists recommend oscillating-rotating or sonic brushes with pressure control.”

After six months of hands-on testing, technological analysis and market research, the Philips Sonicare 9400 emerged as a top all-rounder. It offers four cleaning modes—standard clean, whitening, gentle gum health and deep clean—and adjustable intensity levels. The light-up pressure sensor at the base of the handle is easy to see, and the accompanying app provides real-time coaching. Dr Felici confirmed that “the cleaning performance is very strong.”

The Oral-B iO3 is praised by both dentists as a budget-friendly option with high-tech features. It includes a pressure sensor and timer, and vibrates to signal when to move to a different section of the mouth. The mode button turns amber when the brush head needs replacing. Dr Felici says it “strikes a good balance between affordability and functionality.”

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Other tested models were evaluated for value, design, performance and cleaning results. The experts and tester recommend these brushes for various dental concerns and budgets, emphasising that the brand matters less than the presence of pressure sensors, timers and consistent plaque removal.

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