Dental Crown Removal System Using Threaded Fastener
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Solution Overview
Problem
Current methods for removing cemented dental crowns from dental implants or natural teeth often cause trauma and damage to the underlying structures, leading to costly repairs, patient discomfort, and potential infection.
Innovation Solution
A cemented dental crown removal system featuring a novel dental crown design with strategically placed passageways and a fastener element that allows for safe disengagement from the abutment without mechanical force, using a tool with male threads to break the bond between the crown and the abutment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical force is applied to remove cemented dental crown, then the crown can be removed, but the underlying abutment and natural tooth are damaged
Solution Approach 1:
A fastener element is embedded within the dental crown during manufacturing, positioned to engage with the abutment or tooth structure before cementation. This preliminary inclusion of the fastening mechanism allows for controlled removal later without requiring damaging mechanical force during the removal process.
Solution Approach 2:
The fastener element serves as an intermediary component between the dental crown and the abutment/tooth structure. It provides a controlled engagement mechanism that replaces direct cement-to-structure bonding, enabling removal through fastener disengagement rather than forceful crown separation that would damage the underlying structures.
2Strength
If strong adhesive cement is used to secure the crown, then the crown is firmly attached, but removal causes trauma and damage
Solution Approach 1:
The fastener element acts as an intermediary that provides controlled attachment and detachment. Instead of relying solely on strong adhesive cement that requires forceful removal, the fastener element engages with the abutment or tooth structure, allowing the crown to be securely attached during use while enabling trauma-free removal when the fastener is disengaged.
Solution Approach 2:
The attachment system is segmented into distinct components: the fastener element embedded in the crown, the engagement interface with the abutment/tooth, and the cement layer. This segmentation allows the fastener to bear the primary attachment load while providing a controlled release mechanism, separating the functions of strong attachment and controlled removal.
3Ease of operation
If conventional removal tools are used, then the crown can be detached, but costly repairs and infection risk result
Solution Approach 1:
The fastener element serves as a specialized intermediary that interfaces with a corresponding removal tool, enabling precise and controlled disengagement. This controlled removal process prevents damage to the underlying abutment or tooth structure, eliminating the need for costly repairs and reducing infection risk compared to conventional forceful removal methods.
Solution Approach 2:
The fastener element is designed to be self-contained within the crown structure, with the removal tool simply needing to engage with the fastener's external interface. The fastener itself performs the work of controlled detachment when actuated, minimizing the complexity and invasiveness of the removal process while protecting the underlying structures from damage.
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
Enables the safe and efficient removal of dental crowns without damaging the underlying structures, reducing medical expenses and patient discomfort, and minimizing the risk of infection.
Implementation Method 1
a fastener element (40) having a top exterior surface (41) having a diameter, a body (45) having a first end (42), and a second end (43), and a middle section (44) that is disposed between the first end (42) of the body (45) and the second end (43) of the body (45)
Data Source
AI summary
A cemented dental crown removal system is provided having a base implant, an abutment, and a dental crown having a passageway with a sleeve with one or more female threads. The sleeve is in juxtaposition to the abutment. The sleeve accommodates a fastener element or a tool having one or more male threads that are positioned against the abutment. A method of removing a cemented dental crown is provided.