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MouthIO: A New Interactive Mouthpiece Unlocking Health Data and Hands-Free Control

October 31, 2024

MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) and Aarhus University researchers have developed an innovative interactive mouthpiece, MouthIO, designed to advance health monitoring, assistive technology, and hands-free control. Resembling a translucent retainer, MouthIO integrates sensors and feedback elements, allowing users to control devices and collect data through in-mouth interactions.

MouthIO: A New Interactive Mouthpiece Unlocking Health Data and Hands-Free Control
Image Credit: MIT

A New Approach to Hands-Free Interaction

Unlike conventional hands-free technologies that rely on voice commands, MouthIO uses mouth gestures to facilitate control over phones, computers, and health devices. The device, which fits comfortably over either the upper or lower teeth, leverages 3D printing for personalization, using a computer-aided design tool developed by the researchers. With this tool, users can customize MouthIO’s design based on a dental scan, ensuring a precise fit. The brace includes features like batteries, temperature and motion sensors, and touch sensors. These components enable functions such as temperature alerts and gesture recognition to aid users with tasks ranging from monitoring hot beverages to navigating web pages through tongue taps.

Health Monitoring and Assistive Potential

The development of MouthIO could significantly enhance monitoring capabilities for individuals with specific health needs. For example, embedded accelerometers enable the detection of jaw movements associated with bruxism (teeth grinding), while temperature sensors can alert users if they consume excessively hot beverages. This feature may benefit individuals with reduced oral sensation, providing safer drinking experiences. The team envisions additional uses, such as monitoring salivary bacteria, further expanding MouthIO’s potential as a non-invasive health tool.
The project’s lead researcher, Dr. Michael Wessely, highlights the significance of the mouth as a location for wearable technology, despite the challenges posed by its compact and humid environment. The design ensures that the device remains comfortable, nearly invisible, and suitable for long-term wear. The team’s findings suggest that MouthIO could become a valuable tool for users with limited motor control, enabling them to navigate digital interfaces and perform daily tasks more independently.

DIY Fabrication and Customization

Producing MouthIO is a straightforward process that requires a dental impression, 3D modeling using the team’s custom plugin for Blender, and printing with dental resin. This process is accessible and low-cost, estimated to cost around $15 and taking roughly two hours to print. Users can choose between a standard closed-bite version or an open-bite version, the latter allowing natural speech and better interaction with the tongue. The open-bite design, preferred by participants in user studies, offers an added benefit of reducing lisping and is ideal for extended use.

Future Directions and Applications

While the current prototype demonstrates promising applications, the researchers are refining MouthIO’s design to improve comfort and durability. They are exploring the use of more flexible materials and considering alternate placements, such as on the cheek or palate, to enhance user experience. Other planned advancements include a wireless charging version and a single-sided brace for added comfort and discretion.

Supported by the Novo Nordisk Foundation, this research was recently presented at ACM’s Symposium on User Interface Software and Technology, showing promise for MouthIO as a customizable, affordable, and impactful tool for a range of health and assistive applications.

Source: news.mit.edu

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