Dental Model Root Simulation With Segmented Tooth Attachment
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Solution Overview
Problem
Conventional dental models do not accurately represent the root portion of molar teeth, which differs in shape from natural teeth, and lack the ability to simulate the attachment and detachment of model teeth similar to actual teeth, especially for nerve extraction practice.
Innovation Solution
A dental model design featuring magnetic attachment and detachable lid portions for model teeth, allowing for accurate representation of root portions and enabling secure attachment and detachment of model teeth to a gum-like structure, with features such as recessed grooves, protrusions, and screw mechanisms for secure fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the root portion of the model tooth is made smaller than the insertion hole to allow easy insertion, then the model tooth can be easily attached and detached, but the shape of the root portion becomes different from the natural tooth
Solution Approach 1:
The insertion hole is divided into two functional zones: an upper insertion portion with a larger diameter for easy insertion of the model tooth, and a lower root portion with a smaller diameter that matches the natural tooth root shape. This segmentation allows the model tooth to be easily attached while maintaining an accurate root portion shape for nerve extraction practice.
2Shape
If the root portion of the model tooth is made larger to match the natural tooth shape, then the shape accuracy is improved, but the model tooth becomes difficult to insert into the insertion hole
Solution Approach 1:
The insertion hole is divided into two functional zones: an upper insertion portion with a larger diameter for easy insertion of the model tooth, and a lower root portion with a smaller diameter that matches the natural tooth root shape. This segmentation allows the model tooth to be easily attached while maintaining an accurate root portion shape for nerve extraction practice.
3Device complexity
If a simple insertion hole structure is used, then the device complexity is reduced, but the ability to simulate natural tooth attachment and detachment is lost
Solution Approach 1:
The insertion hole is divided into two functional zones: an upper insertion portion with a larger diameter for easy insertion of the model tooth, and a lower root portion with a smaller diameter that matches the natural tooth root shape. This segmentation allows the model tooth to be easily attached while maintaining an accurate root portion shape for nerve extraction practice.
Solution Approach 2:
Different portions of the insertion hole are given different diameters and functions: the upper insertion portion has a larger diameter for ease of insertion, while the lower root portion has a smaller diameter to simulate the natural tooth root shape and provide secure attachment. This local differentiation enables the simple insertion hole structure to simulate natural tooth attachment and detachment.
Data Source
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AI summary
Provided is a dental model in which a model tooth having a root portion similar to an actual tooth is attachable to and detachable from a gum portion, and an articulator. A dental model 1 according to the present disclosure includes: a gum portion 12 in which an insertion hole 20 to which a model tooth 50 is to be inserted is provided; and a lid portion 18 provided on an oral side of the insertion hole 20 in the gum portion 12, in which the lid portion 18 constitutes a part of the gum portion 12 in a closed state, and provides a recess portion 18b that is continuous from the insertion hole 20 and exposes at least a part of a root portion of the model tooth in an opened state, and in which the lid portion 18 is configured to be opened and closed relative to another portion of the gum portion 12.