Uncured Self-Supporting Dental Article for Margin Continuity
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Solution Overview
Problem
Current dental restoration compositions and methods fail to effectively improve the continuity and aesthetic appearance of dental margins, often resulting in poor fit and increased risk of decay due to inadequate sealing and exposure.
Innovation Solution
A method using an uncured self-supporting dental article comprising a polymerizable resin system with at least 50 wt-% filler, which can be shaped and customized to improve the interface between the tooth structure and dental restoration, subsequently hardened for enhanced mechanical properties and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a preformed dental article is placed directly onto tooth structure, then placement time is reduced, but the continuity and seal at the interface deteriorates
Solution Approach 1:
The patent applies preliminary action by providing an uncured self-supporting dental article that is pre-formed but not yet hardened. This article is placed at the interface between the preformed dental article and tooth structure before final curing, allowing it to be subsequently formed into a second shape that improves interface continuity. The preliminary placement of this adaptable material resolves the contradiction by enabling both time-efficient placement and subsequent precision adjustment.
2Ease of operation
If dental restoration margins are poorly sealed, then ease of placement is improved, but reliability against decay deteriorates
Solution Approach 1:
The patent applies parameter changes by utilizing a dental article that transitions from an uncured state (easy to place and form) to a cured state (provides reliable sealing). The self-supporting uncured article can be easily placed and formed into the desired shape, then cured to achieve the reliable seal needed to prevent decay. This parameter change from uncured to cured state resolves the contradiction between ease of placement and sealing reliability.
3Manufacturing precision
If the uncured dental article is formed into a customized second shape, then interface continuity is improved, but process complexity increases
Solution Approach 1:
The patent applies self-service by providing a self-supporting uncured dental article that can be easily formed into a customized second shape without requiring complex support structures or additional components. The article's self-supporting nature allows it to maintain its form during placement and forming, enabling the practitioner to customize the fit to improve interface continuity without significantly increasing process complexity. The material essentially serves itself by maintaining structural integrity during the customization process.
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 method provides improved continuity and aesthetic appearance of dental margins by ensuring a tight seal and enhanced mechanical strength, reducing the risk of decay and improving the appearance of dental restorations.
Implementation Method 1
Once reformed into a second shape, the composition can be hardened using, for example, a free radical curing mechanism under standard photopolymerization conditions to form a hardened composition with improved mechanical properties
Data Source
AI summary
A method is provided for placing a preformed dental article. The method comprises: providing a preformed dental article; providing an uncured self-supporting dental article having a first shape, wherein the uncured dental article comprises: a polymerizable resin system; at least 50 wt-% of filler; placing the preformed dental article onto a tooth structure such that the uncured dental article is provided at an interface between the preformed dental article and tooth structure; and forming the uncured dental article into a second shape thereby improving the continuity of the interface. Further, a dental article for use at an interface between a dental restoration and tooth structure having a first self-supporting shape are provided in accordance with the invention.