Gradient Polymer Dental Prostheses for Delamination-Resistant Tooth Bonds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing polymers used in dentistry often fail to chemically bond with one another, leading to mechanical bonding that is weak under oral strain and stress, resulting in delamination and seepage issues.
Innovation Solution
A system using gradient polymers to create a transition zone between chemically incompatible materials, allowing them to form a strong chemical bond and seal the interface, preventing seepage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical bonding is used to join chemically incompatible polymers, then the prosthetic can be assembled, but the bond strength is insufficient under oral stress and strain
Solution Approach 1:
A gradient polymer layer is introduced as an intermediary between two chemically incompatible polymers. This gradient layer transitions from 100% first polymer to 100% second polymer through intermediate compositions, enabling chemical bonding throughout the interface rather than at a single sharp boundary, thereby significantly improving bond strength and resistance to delamination under oral stress
Solution Approach 2:
The composition parameter of the polymer is gradually changed across the interface by creating a gradient structure. Instead of a abrupt transition between two incompatible polymers, the gradient layer varies the polymer composition parameter continuously, allowing each region to be chemically compatible with its neighbors and forming strong covalent bonds throughout the transition zone
2Ease of manufacture
If mechanical bonding is used to join polymers, then assembly is possible, but the interface is prone to seepage of saliva, food particles and bacteria
Solution Approach 1:
The gradient polymer layer acts as an intermediary that eliminates the sharp interface between incompatible polymers. By creating a continuous transition zone with gradually changing composition, the gradient layer seals the joint and prevents seepage of saliva, food particles, and bacteria, while still allowing the components to be assembled
Solution Approach 2:
The gradient layer creates a homogeneous transition zone where polymer compositions blend smoothly from one material to another. This homogeneous structure eliminates discontinuities and sharp boundaries that would otherwise create pathways for contaminant seepage, thereby improving the hygiene and integrity of the joint
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 system provides a strong and hygienic bond between artificial teeth and a dental prosthetic base, enhancing durability and preventing degradation from oral stress and strain.
Implementation Method 1
chemical bonding of dental prosthetics is preferred to mechanical bonding due to the more frequent failure of mechanical bonding under the stress and strain of the oral environment
Implementation Method 2
The mixing or transition regions of these materials as a gradient allow them to form some degree of homogeneity which can be used to bond them together
Implementation Method 3
improves hygiene by sealing the interface, protecting it from seepage
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
Systems and methods for securing artificial teeth to a dental prosthetic base with a gradient polymer are disclosed herein. An example system includes one or more processors and a memory communicatively coupled with a 3D printing device and the one or more processors. The memory stores a set of instructions thereon that, when executed by the one or more processors, cause the one or more processors to: generate a print file representative of a polymeric dental prosthesis, the print file including (i) a first material, (ii) a second material that does not chemically bond with the first material, and (iii) a gradient transition zone bonding the first material to the second material that is a gradient polymer of the first material and the second material; and print, via the 3D printing device, the polymeric dental prosthesis based on the print file.