Shell-Like Orthodontic Appliances for Mandibular Retrognathism
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Solution Overview
Problem
Existing orthodontic treatments, such as those described in AU 2005 201 456 B2 and WO 2017007964A1, are inadequate for addressing mandibular positioning facial retrognathism, which is characterized by inertial protrusion of the lower jaw and imbalance between upper and lower jaw bones, leading to misalignment and facial deformities.
Innovation Solution
A mandibular positioning facial retrognathism orthodontic system utilizing a maxillary shell-like dental appliance with protrusion, traction, and retaining portions, along with a mandibular shell-like dental appliance, to gradually align and remodel jaw bones and teeth, incorporating features like friction surfaces and intermaxillary traction members for comprehensive orthodontic and orthopedic correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing orthodontic treatments are used, then treatment can be provided, but they are inadequate for addressing mandibular positioning facial retrognathism with inertial protrusion and jaw bone imbalance
Solution Approach 1:
The orthodontic system is divided into multiple functional components: a maxillary appliance with protrusion portion for occlusal reconstruction, a mandibular appliance with retention portion for aligning mandibular incisors, and intermaxillary traction members for remodeling jaw bones. This segmentation allows each component to address specific aspects of mandibular positioning facial retrognathism independently and effectively.
Solution Approach 2:
The orthodontic system integrates multiple functions into a comprehensive treatment approach: the maxillary appliance performs both occlusal reconstruction and provides traction for jaw bone remodeling; the mandibular appliance simultaneously retains the appliance and aligns teeth; the intermaxillary traction members facilitate both tooth alignment and jaw bone remodeling. This multi-functionality enables the system to address the complex characteristics of mandibular positioning facial retrognathism effectively.
2Reliability
If comprehensive orthodontic and orthopedic correction is implemented, then desired orthodontic outcomes are achieved, but device complexity increases
Solution Approach 1:
The orthodontic system merges multiple treatment functions into integrated appliances: the maxillary appliance combines occlusal reconstruction with jaw bone remodeling capabilities; the mandibular appliance integrates retention with tooth alignment functions; the intermaxillary traction members combine both tooth and jaw bone remodeling. This merging reduces the number of separate devices needed while achieving comprehensive correction.
Solution Approach 2:
The system employs a nested structure where smaller functional elements are incorporated within larger appliances: retention portions are integrated into the mandibular appliance body, traction members are embedded within the maxillary appliance, and multiple functional components are arranged in a coordinated nested configuration. This nesting approach simplifies the overall system structure while maintaining comprehensive functionality.
3Reliability
If gradual alignment and remodeling is performed, then treatment effectiveness is improved, but treatment duration increases
Solution Approach 1:
The orthodontic system performs preliminary actions through the protrusion portion of the maxillary appliance that protrudes toward the mandibular posterior area, initiating occlusal reconstruction before final tooth alignment. The retention portion is pre-configured to automatically engage with mandibular incisors, beginning alignment before the treatment concludes. This preliminary action accelerates the overall treatment process while maintaining effectiveness.
Solution Approach 2:
The system maintains continuous useful action through the intermaxillary traction members that continuously apply corrective forces during the treatment process. The protrusion portion continuously guides the mandibular posterior area, and the retention portion continuously holds the mandibular incisors in alignment. This continuous action ensures steady progress toward the desired orthodontic outcomes without interruption.
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 system effectively aligns mandibular incisors with maxillary incisors, remodels jaw bones, and improves occlusal relationships, reducing treatment risks and enhancing wearing comfort while achieving desired orthodontic outcomes.
Implementation Method 1
a protrusion portion 12 protruding toward an opposite jaw is disposed at a posterior area corresponding to the shell-like body 11... the protrusion portion 12 is engaged with the mandibular posterior area for occlusal reconstruction
Implementation Method 2
a traction portion 14 is disposed on a labial side of the shell-like body 11... the traction portion 14 is engaged with a maxillary for extramaxillary reverse traction for orthodontic remolding of jaw bones
Implementation Method 3
the first interactive traction member 41 and the second interactive traction member 42 are connected by an elastic member 43, so that an occlusal relationship between maxillary and mandibular teeth is adjusted
Data Source
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AI summary
Some embodiments of the present application disclose a mandibular positioning facial retrognathism orthodontic system and a design method thereof. The orthodontic system includes a maxillary shell-like dental appliance (1) having a shell-like body (11), a protrusion portion (12) protruding toward an opposite jaw is disposed at a posterior area corresponding to the shell-like body (11), a traction portion (14) is disposed at a labial side of the shell-like body (11), and a retaining portion (13) configured for fastening with a retaining attachment is disposed at the posterior area corresponding to the shell-like body (11). The protrusion portion (12) is engaged with the posterior area of a mandibular for occlusal reconstruction, so that mandibular incisors are aligned with maxillary incisors. The traction portion (14) is engaged with a maxillary for extramaxillary reverse traction for orthodontic remolding of jaw bones. The retaining portion (13) is configured for fastening with the retaining attachment, to prevent the maxillary shell-like dental appliance (1) from being fallen off from teeth engaged with therein. The design method is a design method for the mandibular positioning facial retrognathism orthodontic system, which can provide a treatment-specific orthodontic system, thereby achieving treatment of mandibular positioning facial retrognathism.