Bone Adhesive Apical Seal for Root Canal Filling
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Solution Overview
Problem
Current root canal filling methods face challenges such as overstuffing of sealer material, leading to inflammation, cyst formation, and bone substance loss due to the inability to achieve a hermetic seal, especially with nonround apical foramina, resulting in costly revisions and patient discomfort.
Innovation Solution
The use of a bone adhesive, comprising materials like calcium phosphate cements and tissue adhesives, for apical blockage of the root canal, ensuring a 100% seal and preventing sealer material from entering surrounding tissue, even with nonround apices, combined with a device featuring a flexible, scaled cannula for precise application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealer material is applied to the gutta-percha point syringe or used in general for root filling, then the root canal can be filled and sealed, but the sealer material may be pressed out beyond the apex and intercalated in the surrounding bone, causing inflammation and cyst formation
Solution Approach 1:
A bone adhesive is introduced as an intermediary substance between the sealer material and the surrounding bone tissue. The adhesive is applied to the apical foramen to create a protective barrier that prevents sealer material from being pressed into the bone, thereby eliminating the harmful tissue reactions while maintaining the sealing function
Solution Approach 2:
The bone adhesive is applied in advance to the apical foramen before introducing the sealer material and gutta-percha. This preliminary action creates a protective layer that prevents subsequent overstuffing and material extrusion into the surrounding tissue, avoiding inflammation and cyst formation
2Productivity
If thermoplastic filling material is used for root filling, then the canal can be filled, but sealer may be pressed out beyond the apex and permanently intercalated in the surrounding tissue, causing rejection reactions or cyst formation
Solution Approach 1:
The bone adhesive serves as a mediator between the thermoplastic filling material and the surrounding tissue. It creates a barrier that prevents the sealer from being pressed into the bone during the filling process, thereby avoiding tissue rejection reactions and cyst formation while maintaining filling efficiency
3Ease of operation
If gutta-percha is introduced in the liquid state using injection syringe, then the canal can be filled, but the danger of overstuffing exists by which gutta-percha material is introduced into the surrounding tissue beyond the tooth canal
Solution Approach 1:
The bone adhesive is applied as an intermediary barrier at the apical foramen before introducing liquid gutta-percha. This prevents the liquid material from being forced into the surrounding tissue during injection, eliminating overstuffing while maintaining the ease of injection operation
Solution Approach 2:
The bone adhesive is applied in advance to the apical foramen before introducing the liquid gutta-percha. This preliminary barrier prevents subsequent overstuffing and material extrusion into surrounding tissue while allowing easy injection
4Reliability
If lateral condensation is used to increase density of gutta-percha filling, then the channel can be filled nearly completely, but the process is very time-consuming
Solution Approach 1:
The bone adhesive creates a barrier that prevents sealer material from being pressed into the bone during filling. This eliminates the need for extensive lateral condensation to prevent overstuffing, thereby reducing treatment time while maintaining adequate filling density
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
This approach minimizes the risk of overstuffing and apical leaks, accelerates healing, reduces patient discomfort and costs, and provides a reliable, bacteria-tight seal, applicable with various root canal methods and anatomical deviations, while reducing the need for complex procedures and x-ray imaging.
Implementation Method 1
The use of a bone adhesive, comprising materials like calcium phosphate cements and tissue adhesives, for apical blockage of the root canal
Implementation Method 2
bone adhesive, comprising materials like calcium phosphate cements and tissue adhesives
Data Source
AI summary
A method and kit for the apical sealing an tooth root canal and for improving root canal fillings are described. Also described is a method for using bone glue as an apical stop for obturating root canals.