How to Use Oral-B iO Series 8 Smart Pressure Sensor
By Electric Toothbrushes, Floss, & Dental Health | Oral-B | Published: 2026-10-23
Category: How-to Guides
Learn how the Oral-B iO Series 8 smart pressure sensor protects your gums. Step-by-step guide to interpreting the light ring, adjusting pressure, and getting the most from your brushing routine.
Quick answer
The Oral-B iO Series 8 smart pressure sensor uses a visible light ring that changes from green (gentle) to red (too hard) to help you brush with the ideal pressure for gum health.
Why pressure matters for your gums
Brushing too hard can wear down enamel and irritate gums over time. The iO Series 8 pressure sensor gives you real-time feedback so you can adjust before damage happens. It’s a built-in coach, not just a light show.
Reading the light ring correctly
The sensor ring encircles the brush handle. During brushing, if you press too firmly, the ring changes from its normal green to red. Red doesn’t mean the brush is broken—it means back off a little. The sensor is most responsive when you brush along the gumline, where overbrushing is common.
Step-by-Step: Using the iO Series 8 Pressure Sensor
- 1. Start brushing as normal: Turn on the iO Series 8 and place the brush head against your teeth at a 45-degree angle to the gumline. Brush gently with small circular motions.
- 2. Watch the light ring while you brush: The ring should stay green when your pressure is gentle. If it turns red, you are brushing too hard. Common mistake: ignoring the red light because you think more pressure cleans better—it doesn’t. A red light is a signal to lighten up, not to keep going.
- 3. Adjust your pressure when you see red: Ease off until the ring returns to green. You don’t need to stop brushing—just reduce the force. The brush still cleans effectively at gentle pressure.
- 4. Practice the habit for a few days: Most people over-brush without realizing it. Use the sensor feedback daily for about a week to retrain your muscle memory. After that, you’ll naturally brush with the right pressure.
The tool that helps you brush smarter
- iO Series 8 Rechargeable Electric Toothbrush, Black Onyx: The iO Series 8 pressure sensor uses a visible light ring that changes color to indicate brushing pressure. It gives you immediate, intuitive feedback so you can correct your technique in real time and avoid gum irritation.
iO Series 8 Rechargeable Electric Toothbrush, Black Onyx
