Bruxism Detection via Bone Conduction MEMS Microphone
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Solution Overview
Problem
Current devices for addressing bruxism are bulky, uncomfortable, and unsuitable for daytime use, failing to address underlying clenching behavior and causing additional issues like sleep disruption and temporomandibular joint damage, while also being unsightly and prone to odor production.
Innovation Solution
A small, non-invasive device placed behind the ear using bone conduction to detect teeth grinding sounds with a MEMS microphone, amplifier, microprocessor, and wireless transmitter, providing feedback through a smart device to modify bruxism behavior without interfering with speech or aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a night guard is used to prevent tooth damage, then tooth protection is improved, but comfort and aesthetics deteriorate
Solution Approach 1:
The patent replaces the mechanical night guard system with an electronic detection and feedback system. Instead of using a physical barrier (night guard) to prevent tooth damage, the invention uses accelerometers and audio sensors to detect bruxism events and provides real-time feedback to the user, allowing them to consciously control and stop the behavior without wearing a bulky device.
2Reliability
If a night guard is worn during sleep, then tooth damage is prevented, but sleep quality deteriorates
Solution Approach 1:
The invention substitutes the mechanical night guard with an electronic monitoring system that provides real-time feedback. This allows users to maintain natural sleep posture and breathing while receiving alerts about bruxism events, eliminating the sleep disruption caused by bulky guards while still preventing tooth damage through behavioral modification.
3Measurement precision
If an intraoral device is used to detect bruxism, then detection accuracy is improved, but comfort and aesthetics deteriorate
Solution Approach 1:
The patent uses an intermediary approach by placing sensors on the exterior of the mouth (cheek or jaw) rather than inside the mouth. The accelerometers and audio sensors detect bruxism-related vibrations and sounds through the skin and bone, providing accurate detection without requiring intraoral placement, thus maintaining comfort and aesthetics.
4Ease of operation
If a device is made small and portable, then comfort and aesthetics are improved, but detection capability deteriorates
Solution Approach 1:
The patent combines multiple sensing technologies (accelerometers and audio sensors) into a single small portable device. This merging of detection methods allows the compact device to capture both vibrational and acoustic signatures of bruxism, maintaining high detection accuracy while preserving the benefits of small size, portability, and comfort.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively addresses bruxism-related issues like muscle soreness, migraines, and temporomandibular joint damage, while being comfortable and inconspicuous for extended wear, both day and night, without causing drooling or harboring bacteria.
Implementation Method 1
using bone conduction to detect teeth grinding sounds with a MEMS microphone
Data Source
AI summary
The present invention is a small device containing at least the following elements: a MEMS microphone, an amplifier, a microprocessor with audio frequency filters, a wireless transmitter, and a battery. The device may be placed behind the ear of the user on a bony protrusion of the skull and may be held in place by a variety of known methods, including adhesives such as spirit gum, adhesive tape, and a small circular adhesive bandage. The MEMS microphone detects sounds transmitted through the skull by bone conductance and the microprocessor analyzes the sounds to determine whether they are associated with a bruxism event. If so, data associated with the sounds are sent via the wireless transmitter to an external device. The data may be stored for later review by the user or medical professional, or may trigger a response such as an auditory or vibratory alarm.