Assembly Rod for Occlusal Plane Measurement
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Solution Overview
Problem
Conventional methods for capturing the occlusal plane in dental prosthesis fabrication are inaccurate, prone to deformation, and require expensive and complex equipment, often resulting in incorrect information transfer due to asymmetrical anatomical landmarks and limited reference lines.
Innovation Solution
An assembly type rod that includes a bite rod with adhesion parts for attaching to dental trays, extension parts for capturing Camper's lines, and a scale for precise measurement, allowing simultaneous capture of interpupillary and Camper's lines, midline, and arch symmetry without expensive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional simple rod forms (microbrush, swab) are used to capture occlusal plane, then the device is simple and easy to use, but the rod is likely to be deformed and inaccurate information is delivered
Solution Approach 1:
The rod is divided into multiple segments that can be assembled together, allowing the device to maintain structural integrity while remaining simple to use. The segmented design prevents deformation while preserving ease of operation.
Solution Approach 2:
Reference lines and anatomical landmarks are pre-marked on the rod before use. This preliminary preparation ensures accurate measurement without requiring complex adjustment during the procedure, maintaining both simplicity and precision.
2Device complexity
If only a reference line at the frontal view is set, then the device structure is simple, but it is difficult to provide information on an accurate occlusal plane
Solution Approach 1:
The device incorporates reference lines in multiple dimensions - frontal view, lateral view, and vertical orientation. This multi-dimensional approach captures complete occlusal plane information without significantly increasing device complexity.
Solution Approach 2:
The rod is designed to serve multiple functions: capturing frontal reference lines, lateral reference lines, and vertical relationships. This multi-functionality ensures complete occlusal plane information is obtained using a single simple device.
3Measurement precision
If a face bow is used to capture occlusal plane, then more accurate information can be obtained, but the equipment is expensive and complicated and only a dedicated articulator can be used
Solution Approach 1:
The essential measurement functions of the face bow are extracted into a simplified rod device. By taking out only the necessary reference line capture capabilities, the device achieves accurate measurement without the complexity and high cost of a complete face bow system.
Solution Approach 2:
The rod is designed as an inexpensive, simple device that can be used once or discarded after a single procedure. This eliminates the need for expensive, complex equipment while providing sufficient accuracy for the measurement task.
4Reliability
If anatomical landmark such as eyes or ears are asymmetrical, then conventional methods fail to provide accurate occlusal plane, but the invention can still capture accurate information
Solution Approach 1:
The device is designed to accommodate and measure asymmetric anatomical landmarks directly. By incorporating asymmetric reference points and allowing independent measurement of each side, the rod provides accurate occlusal plane information even when eyes or ears are asymmetrical.
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
The assembly type rod provides accurate, four-dimensional information on the occlusal plane, reducing errors in prosthesis fabrication by enabling precise transfer of occlusal plane information during impression taking with a simple and economical method.
Implementation Method 1
The adhesives are meltable by applying heat to the adhesion part, so that the bite rod may be attached and fixed to the maxillary or the mandibular tray
Data Source
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AI summary
An assembly type rod for an occlusal plane taking is presented. An assembly type rod according to one embodiment comprises: a bite rod of which the middle portion thereof is placed between the upper and lower anterior teeth of a patient to obtain information of the frontal occlusal plane parallel to the interpupillary line; and an extension portion which is coupled to the bite rod in the form of a ball-and-socket through a ball-shaped coupling portion and is rotatable in a state of being coupled with the bite rod such that information of a lateral occlusal plane according to Camper's line on both sides can be acquired.