Customized Root Canal Obturation Cores for Void-Free Sealing
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Solution Overview
Problem
Current root canal obturation methods often result in voids and leakage, leading to re-infection and reduced long-term success due to the difficulty in filling non-uniformly shaped canals with existing solid core materials.
Innovation Solution
A customized root canal obturation core is created using a computer-controlled manufacturing system based on a three-dimensional image of the canal, ensuring a pre-formed single-piece body that closely matches the canal's contour, thereby eliminating voids and providing a seal impervious to bacteria and tissue fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional solid core materials are used for obturation, then the procedure is simple and quick, but voids and leakage occur in non-uniformly shaped canals
Solution Approach 1:
A three-dimensional image of the root canal is obtained and a customized obturation core is manufactured in advance based on the imaged contour of the root canal. The pre-formed core body is shaped to substantially match the contour of the root canal, allowing it to be inserted and fill the canal without voids or leakage.
2Reliability
If ribbon-shaped and widely oval-shaped canals are attempted to be filled with conventional materials, then standard procedures are maintained, but complete filling without voids is difficult
Solution Approach 1:
The obturation core is customized to match the specific local geometry of each root canal. The pre-formed core body is shaped according to the three-dimensional image of the individual canal, whether ribbon-shaped, widely oval-shaped, or other non-uniform geometries, ensuring complete filling and elimination of voids in each specific case.
Data Source
AI summary
A core for obturating a root canal includes a body that has a pre-formed contour that closely matches a contour of the root canal. When the core is inserted in the root canal with or without sealer, there are essentially no voids in the root canal. A method of making a customized root canal obturation core includes generating a three-dimensional image of a root canal. The method also includes manufacturing the customized root canal obturation core based on the three-dimensional image of the root canal. The customized root canal obturation core has a preformed contour that closely matches a contour of the root canal such that when the core is inserted in the root canal with or without sealer there are essentially no voids in the root canal.