Polyaxial Dental Implant System Angular Placement
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Solution Overview
Problem
Current dental implants face challenges in patients with insufficient bone structure and density, particularly those with osteoporosis, where the implant body may not have adequate attachment, and the external healing cap can interfere with healing by accumulating food and plaque.
Innovation Solution
A dental implant system featuring a lower and upper implant body with a rotatable, swivelable anchor and abutment configuration, allowing for angular placement and reduced need for an external healing cap, with anti-rotation features and a captive nut for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the implant body is placed vertically under the tooth, then the implantation process is simple, but the attachment to bone is insufficient in patients with osteoporosis
Solution Approach 1:
The patent introduces a polyaxial adapter that allows the abutment to be positioned at multiple angles (0-45 degrees) relative to the implant body axis. This dynamic adjustment capability enables the surgeon to optimize the abutment angle for maximum bone contact and attachment in osteoporotic patients, while maintaining the simplicity of the initial vertical implant placement.
Solution Approach 2:
The patent changes the angular parameter of the abutment placement from fixed vertical (90 degrees) to variable (0-45 degrees). This parameter change allows the abutment to be positioned at optimal angles for bone contact, improving attachment reliability in patients with insufficient bone density while maintaining procedural simplicity.
2Reliability
If an external healing cap is used to protect the implant site, then the soft tissue healing is facilitated, but food and plaque accumulation interferes with healing
Solution Approach 1:
The patent removes the traditional external healing cap that projects into the oral cavity and collects food debris. Instead, it uses a healing sleeve that fits over the abutment and extends into the bone, eliminating the harmful accumulation zone while maintaining protection and guidance of soft tissue healing.
Solution Approach 2:
The patent introduces a healing sleeve as an intermediary component between the abutment and the external environment. This sleeve provides protection and guides soft tissue healing without creating a debris-trapping zone, thereby eliminating the harmful effect of food and plaque accumulation while maintaining healing reliability.
3Ease of operation
If the abutment is positioned at an angle to the implant body, then the crown can be aligned with the tooth, but the attachment security is reduced
Solution Approach 1:
The patent uses a polyaxial adapter with a ball-and-socket mechanism that allows dynamic adjustment of the abutment angle during surgery. This enables the abutment to be positioned at the optimal angle (0-45 degrees) for crown alignment with the tooth, while the ball-and-socket connection maintains secure attachment by allowing controlled movement during implantation.
Solution Approach 2:
The patent employs a spherical ball element in the polyaxial adapter that mates with a concave socket. This spherical interface allows the abutment to be positioned at various angles while maintaining secure attachment through the curved contact surface, enabling both crown alignment and attachment security.
4Adaptability or versatility
If a polyaxial adapter is used to allow angular placement, then the abutment can be positioned optimally, but the device complexity increases
Solution Approach 1:
The patent divides the implant system into separate functional segments: the implant body, the polyaxial adapter, and the abutment. This segmentation allows each component to perform its specific function while maintaining overall simplicity. The polyaxial adapter acts as an intermediate segment that provides angular adjustment without complicating the basic implant-abutment connection.
Solution Approach 2:
The polyaxial adapter serves multiple functions: it provides angular adjustment (0-45 degrees), maintains secure attachment through the ball-and-socket mechanism, and facilitates crown alignment. By consolidating these functions into a single component, the patent achieves high adaptability without proportionally increasing device complexity.
Data Source
AI summary
A dental implant system can include an upper implant body coupled to a lower body with a cavity between the upper and lower implant bodies. The system can further include an anchor at least partially disposed within the cavity. The system can also include an abutment that couples to the anchor and serves as a mounting area for a crown. The anchor can be rotatable and swivelable, allowing the lower implant body to be implanted at an angle in bone while permitting the crown to be positioned in a natural tooth orientation.