Splint Abutment with Segmented Pins for Dental Implant Load Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current dental osseointegrated implants face challenges with single abutment cylindrical formats that lead to biomechanical and aesthetic limitations, difficulty in cleaning, and increased bone loss due to stress concentration at the implant neck, as well as limitations in accommodating varying edentulous site sizes and anatomical defects.
Innovation Solution
A splint abutment design with parallel, slightly flared pins and a divergent girdle that follows the gingival contour, allowing for better distribution of occlusal forces and improved hygiene, capable of accommodating two prosthetic crowns on a single implant, with adjustable dimensions and a compensatory slanted coping for anatomical adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cylindrical abutment is used on an implant, then the implant structure is simple, but it causes stress concentration at the implant neck leading to bone loss
Solution Approach 1:
The abutment is divided into multiple pins (typically 3-4 pins) instead of a single cylindrical structure. Each pin is separated and positioned to distribute occlusal forces along the longitudinal axis of the implant, preventing stress concentration at the implant neck and reducing bone loss in the surrounding area.
Solution Approach 2:
The abutment transitions from a single-dimensional cylindrical format to a multi-dimensional pin structure with specific spatial arrangement. The pins are positioned at specific angles and heights to optimize force distribution and accommodate the three-dimensional anatomy of the edentulous site.
2Ease of manufacture
If a single cylindrical abutment is used, then manufacturing is simple, but aesthetic appearance deteriorates due to not following gingival contour
Solution Approach 1:
The abutment is segmented into multiple pins with individual positioning capabilities. This allows each pin to be adjusted to follow the complex three-dimensional contour of the gingival tissue, creating a more natural aesthetic appearance while maintaining manufacturability through standardized pin components.
Solution Approach 2:
The abutment design incorporates adjustability in pin positioning and height, allowing dynamic adaptation to varying gingival contours and patient-specific anatomy. This enables the abutment to achieve optimal aesthetic appearance while maintaining a standardized manufacturing process.
3Device complexity
If a single cylindrical abutment is used, then the structure is simple, but cleaning difficulty increases due to plaque accumulation
Solution Approach 1:
The single cylindrical abutment is replaced with multiple separated pins, creating spaces between them that facilitate access for cleaning instruments. This segmented structure prevents continuous plaque accumulation along the gingival margin and allows patients and professionals to more effectively maintain oral hygiene.
4Device complexity
If a single abutment is used, then the prosthesis structure is simple, but it cannot accommodate varying edentulous site sizes and anatomical defects
Solution Approach 1:
The abutment system uses multiple pins that can be selectively positioned and adjusted to accommodate various edentulous site dimensions and anatomical variations. This segmented approach provides versatility in adapting to different clinical scenarios while maintaining a relatively simple overall prosthesis structure.
Solution Approach 2:
The pin configuration allows for parameter adjustments including pin number, pin diameter, pin height, and pin angular positioning. These parameter variations enable the same basic abutment design to adapt to different edentulous site sizes and anatomical defects without requiring completely different prosthesis structures.
5Strength
If welding is used to join inlay splint blocks, then the metallic structure is strong, but precision deteriorates causing tension transmission to implants
Solution Approach 1:
The welding process is completely eliminated from the abutment construction. Instead of joining inlay splint blocks through welding, the design uses individual pins that are independently positioned and secured to the implant, removing the source of imprecision and tension transmission associated with welding.
Data Source
AI summary
A splint abutment placed on osseointegrated implant for supported prosthesis rehabilitation made of several materials, without restrictions, is provided. This permits the placement of two prosthetic crowns over a single implant with two pins or possibly one and the divergent marginal or cervical girdle, thus providing better biomechanics, marginal sealing, occlusal stability, aesthetics and hygiene maintenance of prosthesis. The shape and contour of the splint abutment provide harmonious distribution and absorption of functional load. Further, a dispositive is provided as a specific piece made of material, without restriction, for fitting between the implant and the splint abutment, which will determine the compensatory and corrective slant adjusting the position of the “abutment” according to the required correction of rotational and multidirectional angulations of the implants for correct rehabilitation. The above-described elements are believed to assure greater predictability of the results.