Customized 3D-Printed Toothbrush with Segmented Cleaning Zones
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Solution Overview
Problem
Conventional toothbrushes are ineffective in ensuring consistent and thorough teeth cleaning due to reliance on user technique, difficulty in reaching all tooth surfaces, and inefficiencies in toothpaste dispensing, leading to inadequate cleaning time and potential over/underbrushing, as well as the lack of customized oral care agents tailored to individual needs.
Innovation Solution
A dental care system featuring a customized toothbrush with 3D-printed cleaning tips and vibration patterns tailored to each user's teeth geometry, combined with a hands-free oral care agent dispenser that provides the precise amount of customized toothpaste based on individual dental information, utilizing AI and ML for data analysis and feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional toothbrushes with clustered bristles are used, then the device is simple and easy to manufacture, but the cleaning effectiveness is highly dependent on user technique and duration, leading to inconsistent cleaning results
Solution Approach 1:
The toothbrush head is divided into multiple independently controllable bristle sections or zones, each capable of moving relative to the others. This segmentation allows different bristle groups to clean different tooth surfaces simultaneously, reducing dependence on user technique while maintaining cleaning effectiveness across all tooth areas.
Solution Approach 2:
The toothbrush employs dynamic bristle movement mechanisms where bristles can oscillate, rotate, or change configuration during use. This dynamic behavior enables the brush to adapt to different tooth surfaces and cleaning angles automatically, compensating for variations in user technique and ensuring consistent cleaning results.
2Productivity
If the brush head width is designed to clean one side of teeth at a time, then the device structure is simple, but it takes many minutes to clean all teeth adequately
Solution Approach 1:
The brush head is segmented into multiple cleaning zones or modules arranged to contact different tooth surfaces simultaneously. Each segment can be independently actuated or positioned, allowing parallel cleaning of multiple tooth areas, thereby significantly reducing total cleaning time while managing structural complexity through modular design.
Solution Approach 2:
The toothbrush transitions from sequential one-dimensional cleaning (one tooth surface at a time) to simultaneous multi-dimensional cleaning by adding spatial distribution of multiple bristle groups. This dimensional expansion allows coverage of buccal, lingual, occlusal, and interproximal surfaces concurrently, increasing productivity without excessive complexity.
3Reliability
If manual toothbrushes require user control of brushing technique and timing, then the device is simple to operate, but users often brush for insufficient time or with incorrect technique
Solution Approach 1:
The toothbrush incorporates sensors, timers, and feedback mechanisms that monitor brushing duration, pressure, and coverage. Real-time feedback through visual, auditory, or haptic signals guides users to maintain proper technique and duration, ensuring reliable brushing time accuracy while reducing the skill requirement through automated guidance.
Solution Approach 2:
The toothbrush performs self-monitoring and self-correction functions, automatically tracking usage time, detecting missed areas, and providing corrective guidance without requiring user expertise. This self-service capability ensures consistent, reliable brushing performance while minimizing the skill burden on the user.
4Measurement precision
If conventional toothpaste dispensing is used, then the system is simple, but it lacks precision in controlling the amount of toothpaste dispensed and does not provide customized oral care agents
Solution Approach 1:
The manual toothpaste dispensing mechanism is replaced with an automated dispensing system that uses controlled mechanical or electronic actuation. This substitution enables precise measurement and control of toothpaste quantity through sensors and actuators, achieving measurement precision while managing device complexity through integrated control systems.
Solution Approach 2:
The dispensing system enables dynamic adjustment of toothpaste dispensing parameters such as amount, viscosity, and composition based on user-specific needs. By changing these parameters programmatically, the system achieves precise control and customization capabilities while maintaining reasonable device complexity through software control.
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
The system ensures thorough and efficient teeth cleaning with reduced discomfort, improved user satisfaction, and personalized oral care, enhancing dental health by accurately addressing individual needs and preventing over/underbrushing.
Implementation Method 1
a 3-D printing device to print a customized mouthpiece and cleaning elements
Implementation Method 2
customized vibration patterns tailored to each user's teeth geometry
Data Source
AI summary
The various embodiments described herein include methods, devices, and systems for customizing dental care. In one aspect, personalized toothbrush devices are 3-D printed for a plurality of users. A 3-D dental model of a respective user's mouth is obtained, and a configuration for a mouthpiece of a respective personalized toothbrush device is determined. The respective personalized toothbrush device is 3-D printed, and includes a top cleaning tray, a bottom cleaning tray, and a set of cleaning elements, each customized based at least in part on the 3-D dental model of the respective user's mouth. Each personalized toothbrush device is 3-D printed for each respective user of the plurality of users, and is different from every other user's personalized toothbrush device.