Transmucosal Base Radial Housing for Oblique Screw Passage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing transmucosal bases for dental prostheses on implants face challenges in facilitating easy screw passage while maintaining esthetic and structural integrity, as longer bases require larger screw diameters and angles that conflict with anatomical obstacles, leading to unsatisfactory restoration.
Innovation Solution
A transmucosal base with an internal radial housing in its longitudinal through-passage allows the screw to be oriented obliquely, reducing the second passage portion's orifice size and positioning it away from anatomical obstacles, and features a frustoconical seating with a progressive flare for improved screw retention and force distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the transmucosal base is made longer to accommodate greater soft tissue heights, then the esthetic appearance is improved, but the screw diameter and angle must increase which conflicts with anatomical obstacles
Solution Approach 1:
The patent introduces a radial dimension by creating an internal radial housing that extends from the longitudinal axis. This allows the screw passage to utilize the radial space within the existing longitudinal structure, enabling the screw orifice to be positioned away from anatomical obstacles without increasing the longitudinal length of the transmucosal base.
Solution Approach 2:
The internal radial housing is nested within the existing longitudinal structure of the transmucosal base. The radial housing contains the screw passage, effectively nesting the screw path within the longitudinal body, allowing compact integration of both longitudinal and radial functions.
2Length of stationary object
If the transmucosal base is made longer, then it can accommodate greater soft tissue heights, but the orifice of the second passage portion becomes excessively large
Solution Approach 1:
The patent transitions from a purely longitudinal passage to a combined longitudinal-radial passage structure. The internal radial housing allows the screw passage to extend radially inward, reducing the need for a large transverse orifice area while maintaining the necessary passage length for screw insertion.
3Ease of operation
If the angle between first and second passage portions is reduced to accommodate longer bases, then screw passage is simplified, but the orifice position conflicts with anatomical obstacles
Solution Approach 1:
The patent divides the screw passage into two distinct segments: a longitudinal first passage portion and a radial second passage portion within the internal radial housing. This segmentation allows each portion to be optimized independently - the longitudinal portion provides easy screw insertion while the radial portion positions the orifice away from anatomical obstacles.
Solution Approach 2:
The patent adds a radial dimension to the screw passage by implementing the internal radial housing. This creates a two-dimensional passage structure (longitudinal + radial) that resolves the conflict between simple screw passage and proper orifice positioning.
Data Source
AI summary
A transmucosal base for receiving a dental prosthesis on a dental implant extends in a longitudinal direction (I-I) between a proximal end and a distal end. The transmucosal base includes a proximal portion shaped so as to be received in or on a dental implant, a distal portion shaped so as to support a dental prosthesis, a longitudinal through-passage successively including an upstream cylindrical portion, a seat for a screw, and a downstream cylindrical portion bounded by a side wall. The transmucosal base includes, in the longitudinal through-passage, a radial inner housing arranged in the peripheral wall of the seat and in the side wall of the downstream cylindrical portion.