Dental Composition Using MTA and Ceramic Biomaterials
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Solution Overview
Problem
Dental implants with non-coated titanium or titanium alloys lack bioactivity, leading to reduced bonding with surrounding tissues and increased risk of delamination and premature failure due to degradation of amorphous or semi-crystallized HA coatings into soluble amorphous calcium phosphates.
Innovation Solution
A two-part self-curable dental composition combining ceramic-based biomaterials like hydroxyapatite with mineral trioxide aggregate (MTA) and 10-methacryloyloxydecyl dihydrogen phosphate (MDP), which promotes bone formation, enhances bonding, and reduces delamination risk by releasing calcium ions and bonding with both the implant and surrounding tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If HA coatings are applied to dental implants, then bonding to surrounding tissues is improved, but the coating degrades over time into soluble amorphous calcium phosphates, increasing delamination and dissolution rate
Solution Approach 1:
The patent applies a composite coating system consisting of hydroxyapatite particles embedded in a glass ionomer matrix. This composite structure combines the bioactivity and bonding capability of HA with the stability and insolubility of glass ionomer, preventing the degradation that occurs with pure HA coatings while maintaining the desired bonding properties.
Solution Approach 2:
The glass ionomer acts as an intermediary matrix that stabilizes the hydroxyapatite particles and prevents their dissolution. The glass ionomer layer serves as a protective barrier between the HA particles and the physiological environment, preventing direct contact and degradation while still allowing ion exchange and bonding functions.
2Strength
If non-coated titanium implants are used, then mechanical strength is maintained, but bioactivity is reduced, leading to decreased bonding with surrounding tissues
Solution Approach 1:
The implant surface is coated with a composite material containing hydroxyapatite particles and glass ionomer. This composite coating provides bioactivity by releasing calcium and phosphate ions that promote bone formation, while the glass ionomer matrix maintains structural integrity and mechanical strength. The coating thickness and composition are controlled to preserve the mechanical properties of the titanium implant.
3Strength
If amorphous or semi-crystallized HA coatings are used, then initial bonding is improved, but the coatings become soluble in aqueous and physiological solutions, reducing adhesive and cohesive strength
Solution Approach 1:
The glass ionomer serves as a stabilizing intermediary that prevents the solubility of hydroxyapatite in physiological solutions. The glass ionomer matrix creates a protective environment that reduces ion leaching and prevents the coating from dissolving, while still allowing controlled ion exchange for bonding purposes.
Solution Approach 2:
The composite structure of glass ionomer and hydroxyapatite particles creates a coating that combines the bonding advantages of HA with the solubility resistance of glass ionomer. The glass ionomer phase acts as a scaffold that prevents the amorphous HA from dissolving while maintaining the bioactive properties needed for tissue bonding.
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 composition increases primary stability, reduces crestal bone resorption, and promotes maximum bone contact with the implant, improving healing time and osseointegration while maintaining biocompatibility.
Implementation Method 1
The phosphoric acid monomer can have the ability to bond with calcium ions and the ceramic based biomaterial, as well as the surrounding bone and tissue
Implementation Method 2
The MTA can have sealing capability and can release calcium ions when in contact with physiological solutions
Implementation Method 3
Providing a dental composition with the MTA and the ceramic based biomaterial (e.g., HA) can promote bone formation
Data Source
AI summary
Dental compositions are disclosed. A dental composition can include a reaction produce of a reaction mixture comprising a first mixture and a second mixture. The first mixture can include a ceramic based biomaterial, and the second mixture can include mineral trioxide aggregate and a phosphoric acid monomer.