Bone Graft Composition Viscosity Control via Methylcellulose Additive
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Solution Overview
Problem
Existing bone graft compositions face limitations in biocompatibility, viscosity, and shape retainability, which affect their effectiveness in bone regeneration and stability during surgical procedures.
Innovation Solution
A bone graft composition is developed containing a bone graft material and a methylcellulose-based additive, such as hydroxypropyl methylcellulose, with a viscosity range of 100 to 500,000 centipoises, enhancing biocompatibility and shape retainability by adjusting the additive's content to 0.03 to 3 parts by weight based on the bone graft material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bone graft materials are used, then bone regeneration can be achieved, but viscosity control and shape retainability are limited
Solution Approach 1:
The patent applies parameter changes by systematically adjusting the viscosity of the bone graft composition through controlled addition of methylcellulose-based additives. The viscosity is optimized to a specific range (100-500,000 cps) to simultaneously achieve ease of application and shape retainability. This parameter optimization resolves the contradiction by finding the optimal viscosity window that satisfies both operational ease and structural stability requirements.
Solution Approach 2:
The patent creates a composite material system by combining bone graft materials (such as calcium phosphate compounds) with methylcellulose-based additives. This composite approach allows the composition to exhibit both the osteogenic properties of bone graft materials and the rheological control provided by the cellulose derivative, thereby achieving both effective bone regeneration and improved viscosity control with shape retainability.
2Shape
If additive content is increased to improve viscosity, then shape retainability improves, but biocompatibility may be affected
Solution Approach 1:
The patent resolves this contradiction through precise parameter control by limiting the additive content to a specific range (0.03-3 parts by weight per part of bone graft material). This controlled parameter adjustment ensures that viscosity and shape retainability are improved while maintaining biocompatibility, as the additive concentration remains within safe and effective boundaries.
Solution Approach 2:
The patent employs methylcellulose-based additives that are biodegradable and temporarily functional. These additives provide the necessary viscosity and shape control during the surgical procedure and initial setting phase, then gradually degrade in the body, eliminating long-term biocompatibility concerns while achieving the required short-term structural support.
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 achieves optimal viscosity and shape retention, ensuring effective bone formation, biocompatibility, and ease of use by maintaining structural integrity during mastication and hydration processes.
Implementation Method 1
the additive includes only a methylcellulose-based additive and the viscosity of the bone graft composition is 100 to 500,000 centipoise (cps)
Data Source
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AI summary
The present disclosure relates to a bone graft composition containing a bone graft material and an additive and having a predetermined viscosity, wherein the additive includes only a methylcellulose-based additive, and a viscosity of the bone graft composition is 100 to 500,000 centipoises (cps).