Dental Analysis System Using M and Golden Proportions
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Solution Overview
Problem
Conventional methods for evaluating and modifying dentition do not effectively utilize aesthetic proportions, such as the Golden Proportion, to achieve ideal tooth positioning, particularly for the maxillary teeth, leading to suboptimal results in dental restoration design.
Innovation Solution
A system and method that apply positioning lines based on the M Proportion (1:1.367) and Golden Proportion (1:1.618) to determine ideal tooth positioning, using a processor to compute and apply visual indicators on patient images, allowing for virtual and real diagnostic wax-ups of dental restorations, and incorporating a diagnostic grid for precise tooth placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional grid methods based on Golden Proportion are used to position the four front teeth, then the upper centrals and sometimes upper laterals follow the proportion, but the other maxillary teeth do not follow the proportion, resulting in suboptimal aesthetic results
Solution Approach 1:
The method segments the maxillary dentition into multiple groups (anterior teeth, premolars, molars) and applies different positioning approaches to each segment. The Golden Proportion grid is applied specifically to the four front teeth, while separate proportional relationships are established for premolars and molars based on their respective anatomical landmarks and functional requirements.
Solution Approach 2:
Different aesthetic proportion principles are applied to different regions of the maxillary dentition. The anterior region uses Golden Proportion-based vertical positioning, while the premolar and molar regions use their own proportional systems based on intermolar distances and arch width, ensuring each region receives the most appropriate aesthetic guidance.
2Ease of manufacture
If a fixed proportional system is applied to all teeth, then the method is simple to apply, but it cannot accommodate individual patient variations in dentition anatomy and aesthetics
Solution Approach 1:
The system transitions from fixed, rigid proportional grids to dynamic, adjustable positioning lines. The vertical reference lines can be repositioned along the tooth surfaces, and the horizontal reference lines can be adjusted in height, allowing the aesthetic guidelines to adapt to each patient's unique anatomy while maintaining the overall proportional framework.
Solution Approach 2:
The method allows modification of key parameters including the position of vertical reference lines, the height of horizontal reference lines, and the spacing between proportional divisions. These parameters can be adjusted based on individual patient characteristics such as smile arc, gingival display, and tooth morphology, enabling customization within the proportional system.
Data Source
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AI summary
A system for designing the dentition of a patient, comprising a first input for providing an image of the smile of the patient to the system, an Output, a processor for computing and applying a first set of visual indicators onto the image of the smile of the patient through the output, the first set of visual indicators indicating ideal positioning of the teeth of the patient, and for computing and applying a second set of visual indicators onto the image of the smile of the patient through the output, the second set of visual indicators providing adjustment of positioning of the teeth of the patient, a memory having stored therein a library of 2D digital images of smiles and associated 3D dentition models, a user interface for selecting a desired 2D digital image to be applied to the image of the smile of the patient and adjusting the second set of visual indicators, the adjustment of the second set of visual indicators modifying the 2D digital image, wherein the processor modifies the 3D dentition model associated with the 2D digital image and provides a virtual wax-up of a dental restoration of the dentition of the patient.