Bruxism Evaluation Sheet for Sleep Contact Pattern Detection

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Solution Overview

Problem

Current methods lack a convenient and effective means to evaluate occlusal contact patterns during sleep bruxism, which is essential for daily and clinical diagnosis, as conventional techniques like observing the oral cavity or using articulators are inadequate.

Innovation Solution

A bruxism evaluation sheet coated with an aqueous dye composition and thermosetting resin is developed, which is heated and vacuum-pressed onto a model to create a convenient evaluation apparatus that can be used to visualize tooth contact patterns during sleep bruxism without discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional methods (observing oral cavity or using articulators) are used to evaluate tooth contact patterns, then the evaluation can be performed with simple equipment, but the contact patterns during sleep bruxism cannot be adequately detected

Engineering Contradiction:
Improvedetection of occlusal contact patternsVSAvoidevaluation apparatus
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The invention uses a wax sheet that replicates the occlusal surfaces of teeth to create a negative impression. This copy captures the contact patterns during bruxism events, allowing evaluation without complex sensing equipment. The wax sheet serves as a passive replica that records contact information through material transfer.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The wax sheet is colored to enhance visibility of contact patterns. When teeth contact during bruxism, the colored wax transfers material or shows wear patterns that are easily observable. The color change or visible marking mechanism allows clear detection of contact areas without complex instrumentation.

Inventive Principle:
Principle #32Color changes

2Ease of operation

If a convenient evaluation sheet is used, then the ease of operation improves for daily diagnosis, but the ability to clearly visualize contact patterns may be compromised

Engineering Contradiction:
Improveconvenience of evaluation apparatusVSAvoidvisualization of contact patterns
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The wax sheet incorporates color indicators that change or become visible when contact occurs. This allows the simple, convenient sheet to simultaneously provide clear visualization of contact patterns through color contrast, maintaining both ease of use and measurement precision.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The wax sheet is pre-colored and prepared before use, so that when contact occurs during bruxism, the contact patterns are immediately visible without requiring additional processing or complex analysis equipment. The preliminary preparation ensures both convenience and clear visualization.

Inventive Principle:
Principle #10Preliminary action

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 apparatus allows for clear visualization of occlusal contact patterns during sleep bruxism, enabling effective daily and clinical diagnosis, and has been shown to identify contacts that were not recognizable through conventional methods, aiding in the diagnosis and treatment planning of related dental disorders.

Implementation Method 1

heated and vacuum-pressed onto a model

Methodology Applied
Scientific EffectVacuum pressing: Vacuum

Implementation Method 2

heated and vacuum-pressed onto a model

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 3

aqueous dye composition and thermosetting resin

Methodology Applied
Scientific EffectThermosetting: Phase Change

Data Source

PatentUS7891976B2Bruxism evaluation sheet
Publication Date: 2011.02.22 ROCKY MOUNTAIN MORITA CORP
  • US7891976B2 patent drawing
  • US7891976B2 patent drawing
  • US7891976B2 patent drawing

AI summary

The purpose of the present invention is to develop an apparatus that can examine the occlusal contact patterns during the sleep bruxism, which can not be evaluated by the observation of the interior of oral cavity or by means of the articulator, in order to establish a convenient evaluation means for employing bruxism in daily and clinical diagnosis. The present invention relates to a bruxism evaluation sheet having a layer comprising an aqueous solution composition of an organic solvent comprising a dye and a thermosetting resin on a base sheet made of a thermoplastic resin, and a method for producing a convenient bruxism evaluation apparatus comprising heating the bruxism evaluation sheet, vacuum pressing it onto a model and then molding, and the like.