For a renowned Japanese pediatric healthcare and premium dental brand, we developed an interactive kids sonic toothbrush that uses AI posture tracking, app-based brushing guidance, wireless data sync, and bone conduction audio to help children build better daily brushing habits.
The client needed a compact kids toothbrush that could track brushing across 6 oral zones and 16 tooth surfaces in real time. It also needed offline data storage and automatic WiFi cloud sync without relying on a parent’s phone nearby. At the same time, traditional speaker openings were not suitable because they could reduce waterproofing and create hygiene risks in wet bathroom environments.
We integrated a 6-axis gyroscopic sensor with high-speed posture-recognition algorithms to map brushing behavior inside the app. A dual BLE + WiFi module was developed to support offline data caching and automatic cloud upload. Instead of an open speaker, we embedded a bone conduction transducer inside the sealed handle, keeping the device IPX7 waterproof while delivering gentle voice and melody guidance.
The product shipped more than 450,000 units in Japan within 18 months. Post-launch tracking showed a 92% increase in children reaching the recommended 2-minute brushing duration and an 88% reduction in incorrect brushing postures. The product also received recognition from Japanese design and mother-baby technology award programs.
We help pediatric oral care brands develop smart toothbrushes with motion sensing, app interaction, wireless sync, sealed audio systems, waterproof structures, and child-friendly industrial design.