Segmented Mineral Trioxide Aggregate for Rapid Dental Setting
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Solution Overview
Problem
Mineral trioxide aggregate (MTA) used in dentistry takes too long to set, requiring additional visits and increasing treatment costs and inconvenience, and irrigation before setting can displace the material, necessitating extra application.
Innovation Solution
A substance comprising untreated and milled mineral trioxide aggregate, where the untreated aggregate is mixed with a non-aqueous liquid and processed using high shear and impact impingement by high pressure homogenization to reduce particle size, significantly shortening the setting time when used in combination with water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mineral trioxide aggregate is used to replace natural tooth material, then biocompatibility is improved, but setting time increases
Solution Approach 1:
The mineral trioxide aggregate is divided into two distinct particle size fractions: a coarse fraction (original size) and a fine fraction (milled to 5-50 micrometers). This segmentation allows the fine particles to accelerate setting while the coarse particles maintain structural integrity and biocompatibility, resolving the contradiction between fast setting and biocompatibility.
Solution Approach 2:
The invention creates a composite material system combining two different particle size fractions of mineral trioxide aggregate. The composite structure leverages the advantages of both fractions: fine particles provide rapid setting and irrigation resistance, while coarse particles ensure biocompatibility and structural strength, thereby resolving the contradiction between setting speed and biocompatibility.
2Reliability
If mineral trioxide aggregate is used to replace natural tooth material, then biocompatibility is improved, but treatment cost increases
Solution Approach 1:
By segmenting the MTA into two particle size fractions, the material achieves rapid setting (reducing treatment time from hours to minutes), which eliminates the need for multiple patient visits. This improves treatment efficiency and reduces overall treatment cost while preserving the biocompatibility provided by the original MTA composition.
Solution Approach 2:
The invention changes the particle size parameter of the MTA to create a bimodal distribution. This parameter change accelerates the setting reaction significantly, allowing treatment completion in a single visit, thereby improving productivity and reducing treatment cost while maintaining the biocompatible properties of MTA.
3Ease of operation
If mineral trioxide aggregate is applied before setting, then material placement is achieved, but irrigation displaces the material
Solution Approach 1:
The fine particle fraction (5-50 micrometers) creates a densely packed structure that resists irrigation displacement, while the coarse fraction maintains structural framework. This segmentation allows the material to be easily placed yet remain highly resistant to being washed out during irrigation, resolving the contradiction between ease of placement and material retention.
Solution Approach 2:
The composite structure of fine and coarse MTA particles creates a interlocked framework that prevents irrigation from displacing the material. The fine particles fill voids and create a tight matrix that anchors the coarse particles, ensuring material retention while maintaining ease of placement.
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 combination of untreated and milled mineral trioxide aggregate sets within minutes, reducing treatment time and minimizing the need for additional applications, while maintaining clinical effectiveness and biocompatibility.
Implementation Method 1
processed using high shear and impact impingement by high pressure homogenization to reduce particle size
Data Source
AI summary
A substance that sets in a relatively short time for use in general dentistry and in endodontics to replace natural tooth material, the substance comprising untreated mineral trioxide aggregate and milled mineral trioxide aggregate, or comprising untreated mineral trioxide aggregate, milled mineral trioxide aggregate and water. A method of making a substance that sets in a relatively short time for use in general dentistry and in endodontics to replace natural tooth material, the method comprising milling by high shear and impact impingement of particles using high pressure homogenization. A method for use in general dentistry and in endodontics to replace natural tooth material.