Bone Augmentation Scaffold With Perforated Superstructure
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Solution Overview
Problem
Existing bone augmentation structures used for vertical bone augmentation are limited by their strength and porosity, making them inadequate for effectively securing bone augmentation material and withstanding mechanical pressures in the oral environment.
Innovation Solution
A scaffold with a biocompatible superstructure made of materials like titanium or polyimide, featuring a plurality of perforations that securely hold bone augmentation material, providing sufficient strength and tensility to resist mechanical forces and facilitate bone growth, while allowing for customizable perforation sizes and production methods such as 3D printing for precise fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional materials (calcium phosphates, calcium sulphate, calcium carbonate, bioactive glass) are used for bone augmentation structures, then the structures can be biocompatible and support bone growth, but the strength and porosity are limited, reducing the size and effectiveness of the structures
Solution Approach 1:
The patent employs composite material construction by combining a rigid superstructure framework with bone augmentation material filled within perforations. The superstructure provides mechanical strength while the porous-filled regions provide biocompatibility and bone growth support, creating a composite system that achieves both strength and reliability requirements
2Reliability
If the structure size is increased to provide better support for vertical bone augmentation, then the bone augmentation effectiveness improves, but the mechanical strength and ability to withstand oral pressures decreases
Solution Approach 1:
The bone augmentation structure is segmented into a superstructure framework with discrete perforations that are filled with bone augmentation material. This segmentation allows the overall structure to maintain large dimensions for effective bone augmentation while the framework segments provide mechanical reinforcement throughout the structure
Solution Approach 2:
The composite construction of a rigid superstructure combined with filled perforations creates a structure where the framework provides strength and the filled regions provide volume and biocompatibility, resolving the contradiction between size and strength
3Adaptability or versatility
If hollow expanding pouches made of resorbable material are used for vertical bone augmentation, then the structures can be biodegradable and support bone growth, but they cannot withstand excessive mechanical pressures in the oral environment
Solution Approach 1:
The patent creates a composite system where a non-resorbable or slowly resorbable superstructure provides mechanical strength and pressure resistance, while the bone augmentation material within the perforations provides biodegradability and bone growth support. This composite approach allows the structure to withstand oral pressures while remaining biocompatible and supportive of bone regeneration
Solution Approach 2:
Different regions of the structure have different properties: the superstructure framework provides mechanical strength and pressure resistance, while the filled perforations provide biodegradability and osteoconductivity. This local differentiation of material properties resolves the contradiction between pressure resistance and biodegradability
Data Source
AI summary
A scaffold for bone augmentation constituted of: a superstructure configured and dimensioned to substantially ameliorate a bone defect, the superstructure comprising: a biocompatible material having a strength and tensility sufficient to be permanently stationed between an upper jaw and a lower jaw; a first face arranged to face the bone defect; a second face, opposing the first face; a plurality of perforations extending from the first face to the second face; and bone augmentation material deposited within said plurality of perforations, wherein the perforations are of a size sufficient to secure bone augmentation material deposited within the plurality of perforations.