Ultrasonic RF Cleaning Unit for Dental Calculus Removal
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Solution Overview
Problem
Current surface cleaning devices, particularly toothbrushes, are ineffective in removing calculus and require specialized tools, and their bristles contribute to environmental pollution and inefficiency in ultrasonic wave transmission.
Innovation Solution
A cleaning unit combining ultrasonic stimulation and RF electromagnetic stimulation, with protrusions for mechanical cleaning, to soften and remove deposits, and enhance cavitation effects, allowing for simultaneous ultrasound and RF emission in a common spatial area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bristle toothbrushes are used for cleaning teeth, then mechanical cleaning action is provided, but they are ineffective in removing calculus and contribute to environmental pollution
Solution Approach 1:
The patent removes traditional nylon bristles from the cleaning device and replaces them with a combination of ultrasonic transducers and RF emitters. This extraction of the harmful bristle component eliminates environmental pollution while maintaining cleaning functionality through non-mechanical means.
Solution Approach 2:
The patent replaces the mechanical bristle-based cleaning system with a non-mechanical system combining ultrasonic vibrations and RF electromagnetic radiation. The ultrasonic transducers generate high-frequency vibrations that create cavitation bubbles, while RF emitters provide dielectric heating, together achieving effective cleaning without mechanical contact.
2Productivity
If harder bristles are used to remove calculus, then cleaning power increases, but trauma to gum tissue and abrasion of tooth enamel occur
Solution Approach 1:
The patent replaces mechanical scrubbing action with ultrasonic cavitation and RF dielectric heating. The ultrasonic transducers generate cavitation bubbles that implode to break down calculus, while RF radiation heats and softens deposits, enabling effective calculus removal without the need for hard mechanical bristles that cause tissue trauma.
Solution Approach 2:
The patent changes the cleaning mechanism from mechanical force to electromagnetic and acoustic field interactions. By using RF electromagnetic radiation and ultrasonic vibrations, the system achieves calculus removal through thermal softening and cavitation rather than mechanical abrasion, eliminating damage to soft tissues and enamel.
3Reliability
If RF generating elements are incorporated with sonic vibration, then plaque softening is achieved, but calculus removal and cleaning in inaccessible regions remain limited
Solution Approach 1:
The patent merges ultrasonic transducer technology with RF emitter technology in a single cleaning device. The ultrasonic component provides mechanical vibration and cavitation for calculus removal, while the RF component provides dielectric heating for softening deposits. This combination achieves both plaque and calculus removal, and the electromagnetic fields can reach inaccessible areas where mechanical bristles cannot penetrate.
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
This combination improves the removal of dental plaque and calculus, reduces the need for mechanical scrubbing, and enhances cleaning in inaccessible areas, while minimizing environmental impact and improving oral health.
Implementation Method 1
Radio frequency emissions have a dielectric heating effect for certain materials, which provides for a softening or 'melting' of plaque on tooth surfaces
Implementation Method 2
Ultrasonic stimulation of surfaces can induce cavitation where there is a layer of liquid in contact with the surface to be cleaning and located between this surface and the ultrasound transducers. Cavitation is known to have an abrasive effect on surfaces, which can be used to clean contaminants from surfaces
Implementation Method 3
a piezoelectric transducer arrangement adapted to generate ultrasonic emissions responsive to one or more drive signals
Data Source
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AI summary
A surface cleaning means is proposed based on the combined use of ultrasound and radiofrequency electromagnetic emissions, propagated onto a surface to be cleaned, to provide synergistic cleaning action. One aspect provides a cleaning unit which comprises a body which includes an ultrasound transducer arrangement and an RF emitter arrangement, and wherein the two are arranged such that, when driven by respective drive signals, ultrasonic and RF emissions (for providing a cleaning action) are generated which overlap in a common spatial region, to thereby provide combined cleaning action in the common spatial region. One example application is for use for oral cleaning.