3D-Printed Dental Crown Support Layout for Easier Post-Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing additive manufacturing processes for dental restorations require complex support structures that are difficult to design, time-consuming to remove, and can cause deformations, especially in complex shapes, and are not easily handled during post-processing.
Innovation Solution
A 3D-printed dental restoration precursor with a single support element connected at a specific angle to the crown unit, either adjacent to the occlusal top surface or incisal top edge, allowing self-supporting orientation and reducing the need for additional support elements during printing and simplifying post-processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple support structures are used to support overhanging portions during 3D printing, then the object can be printed successfully, but the support structures become complex and time-consuming to remove
Solution Approach 1:
The patent extracts the support function from complex multi-element support structures and concentrates it into a single support element. This single element is strategically positioned to provide necessary support during printing while being simple enough to remove easily after printing, thus resolving the contradiction between printing reliability and support structure complexity.
Solution Approach 2:
The single support element serves multiple functions: it supports overhanging portions during printing, provides a handle for easy removal after printing, and can be used to manipulate the printed object. This multi-functionality reduces the need for complex support structures while maintaining printing success.
2Reliability
If traditional support structures are used, then overhanging portions can be supported during printing, but they cause deformations in complex shapes
Solution Approach 1:
The patent applies local quality by positioning the single support element at specific locations on the object rather than using distributed support structures. The support element is placed at strategic points where it provides maximum support with minimum interference to the overall shape, thus maintaining manufacturing precision while ensuring support capability.
3Reliability
If multiple support elements are used, then sufficient support is provided during printing, but post-processing time increases
Solution Approach 1:
The patent extracts the support function from multiple support elements and concentrates it in a single support element that includes an integrated handle. This handle facilitates easy and quick removal after printing, significantly reducing post-processing time while maintaining sufficient support during the printing process.
4Stability of the object's composition
If support structures are made robust for stable printing, then printing stability is improved, but removal after printing becomes difficult
Solution Approach 1:
The support element incorporates a flexible handle section that provides dynamic characteristics. The handle can be bent and manipulated to facilitate removal from the printed object, while the fixation section maintains robust connection during printing. This dynamic design allows the support element to be both stable during printing and easy to remove afterward.
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
Facilitates efficient production and handling of dental restorations with minimal deformation and reduced post-processing time, enabling easier handling and automation, particularly suitable for pediatric applications.
Implementation Method 1
Stereolithography generally uses light for hardening radiation curable resins. Data based on computer aided design and/or computer aided manufacturing (CAD/CAM) are used to project a light pattern on a layer of the radiation curable resin. The radiation sensitive resin typically solidifies in consequence of the exposure of the light
Data Source
AI summary
The invention relates to a 3d-printed dental restoration precursor, a 3d-printed array comprising a 3d-printed dental restoration precursor, a kit of parts comprising at least two 3d-printed dental restoration precursors or 3d-printed dental restorations and a process of producing such a 3d-printed array, 3d-printed dental restoration precursor or 3d-printed dental restorations. The 3d-printed dental restoration precursor comprises at least one crown unit having an outer surface and an inner surface and at least one support element having a fixation section. The support element is connected through the fixation section to the outer surface of the crown unit in a particular region.