Dental Component Interface with Alternating Guiding and Indexing Sections

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Solution Overview

Problem

Existing dental component interfaces complicate installation due to flexibility leading to incorrect positioning and lack of feedback during assembly, making it difficult to assemble dental components correctly and potentially damaging them during fixation.

Innovation Solution

The interfaces feature alternating guiding and indexing sections that provide haptic feedback and rotational locking, ensuring correct assembly by guiding components to a final position and preventing premature fixation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple indexing features are provided to allow flexible positioning of dental components, then adaptability is improved, but device complexity increases and ease of operation deteriorates due to difficulty in finding correct orientation

Engineering Contradiction:
Improvepositioning optionsVSAvoidassembly difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements haptic feedback through the interaction between the guiding surface and mating guiding surface. As components are brought together, the guiding surface provides tactile cues that guide the operator to the correct rotational orientation. The indexing feature then provides a distinct haptic confirmation when proper alignment is achieved, eliminating the need to mentally track multiple possible orientations and significantly simplifying the assembly process while maintaining positioning flexibility.

Inventive Principle:
Principle #23Feedback

2Reliability

If indexing features are provided to enable rotational locking, then reliability is improved, but device complexity increases due to additional interface structures

Engineering Contradiction:
Improverotational lockingVSAvoidinterface structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into unified interface structures. The guiding surface serves both as an alignment guide during assembly and as a structural element that works with the indexing feature for rotational locking. The indexing feature itself provides both the locking mechanism and haptic feedback for confirmation. This integration reduces the number of separate components and simplifies the overall interface design while maintaining reliable rotational locking.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If guiding sections are added to provide assembly guidance, then ease of operation is improved, but device complexity increases due to additional interface elements

Engineering Contradiction:
Improveassembly guidanceVSAvoidinterface elements
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The guiding surface is designed to be self-guiding through its geometric profile and interaction with the mating guiding surface. The surfaces naturally direct the components into correct alignment through their shape and contact geometry, without requiring external guidance mechanisms, complex adjustment devices, or additional active components. The structure itself provides the guidance function, minimizing added complexity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3668444B1Dental component with an interface
Publication Date: 2025.07.16 NOBEL BIOCARE SERVICES AG
  • EP3668444B1 patent drawingFigure 1a~1b
  • EP3668444B1 patent drawingFigure 1c~1d
  • EP3668444B1 patent drawingFigure 1e

AI summary

The present invention addresses above-noted objectives by providing a dental component that includes a coronal end, an apical end, and a longitudinal axis extending between the coronal end and the apical end. The dental component also includes an interface for assembly to another dental component, the interface comprising at least one indexing section for rotationally locking the dental component to the other dental component and at least one guiding section. The at least one guiding section and the at least one indexing section alternate about the longitudinal axis, wherein the guiding section includes an apically facing or coronally facing guiding surface. Further, a tangent to at least a portion of the guiding surface has a slope towards the next indexing section about the longitudinal axis.