3D Dental Preparation Guide Using Corrugated Jaw Surface Modeling
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Solution Overview
Problem
The challenge in dentistry is to efficiently prepare a patient's jaw for dental restorations while minimizing tissue removal and preserving natural aesthetics, particularly in cases of missing teeth or bone loss due to mechanical forces, disease, or trauma.
Innovation Solution
A method for generating a three-dimensional digital guide model of a physical preparation guide for a dental preparation of a patient's jaw, using a corrugated surface defined by a waveform with local minima and maxima, which is overlaid with a three-dimensional digital jaw model to minimize tissue removal and ensure precise placement of artificial teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional dental preparation methods are used, then teeth can be replaced, but significant tissue removal is required which compromises natural aesthetics and future tissue health
Solution Approach 1:
The patent applies preliminary action by creating a digital preparation guide model before the actual dental preparation procedure. This digital model, generated from 3D scans of the patient's jaw and incorporating waveform patterns, allows the dentist to plan and visualize the exact tissue removal requirements in advance. The guide model is then physically manufactured and used during the procedure to ensure precise, minimal tissue removal while preserving natural aesthetics and future tissue health.
Solution Approach 2:
The patent uses copying by creating a physical preparation guide model that is a copy of the digital 3D jaw model with embedded waveform patterns. This physical copy serves as a template during the dental procedure, allowing the dentist to replicate the optimal preparation pattern without repeatedly measuring or calculating tissue removal requirements, thereby ensuring consistent minimal intervention.
2Manufacturing precision
If conventional preparation guides are used, then dental restorations can be placed, but precise placement of artificial teeth cannot be ensured
Solution Approach 1:
The patent applies dimensionality change by transitioning from traditional 2D or simple 3D preparation guides to a complex 3D digital model incorporating waveform patterns in multiple dimensions. The digital jaw model includes waveform patterns that extend in longitudinal direction with periodic variations, creating a multi-dimensional guide that precisely controls tissue removal depth and width, thereby ensuring accurate placement of artificial teeth.
Solution Approach 2:
The patent uses parameter changes by incorporating waveform patterns with specific periodic variations into the preparation guide. These waveforms with defined wavelengths and amplitudes allow precise control over the preparation parameters (depth, width, shape) of tissue removal, enabling accurate reproduction of the optimal preparation pattern for artificial tooth placement.
3Loss of substance
If minimal tissue removal is performed, then natural aesthetics are preserved, but the preparation may not be challenging enough for complex cases
Solution Approach 1:
The patent applies dynamics by creating a flexible digital preparation guide system that can be dynamically adjusted for different dental cases. The digital jaw model with waveform patterns can be modified based on the specific requirements of each patient and case, allowing the same basic principle to adapt to various complex scenarios while maintaining minimal tissue removal and preserving natural aesthetics.
Data Source
AI summary
The invention relates to a method for generating a three-dimensional digital guide model of a physical preparation guide for a dental preparation of a patient's jaw. A three-dimensional digital jaw model and a definition of tooth positions is received. The tooth positions comprise one or more target tooth positions for one or more artificial teeth. The three-dimensional digital jaw model is overlaid with a three-dimensional digital corrugated surface. The overlaying comprises adjusting a waveform of the corrugation with local minima and maxima, such that the local minima are arranged at the positions of the teeth, while the local maxima are arranged between the positions of the teeth. The three-dimensional digital guide model is generated using the three-dimensional digital corrugated surface with the adjusted waveform.