3D Tooth Replica Socket Guide for Guided Autotransplantation
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Solution Overview
Problem
Conventional autotransplantation processes require multiple fittings of donor teeth to achieve a proper fit, leading to prolonged extra-alveolar time and damage to periodontal ligament cells, which negatively impacts the success of the procedure.
Innovation Solution
A customized socket preparation tool is used, fabricated from a three-dimensional tooth replica, to facilitate accurate socket preparation at the recipient site, reducing the need for multiple fittings and minimizing damage to periodontal ligament cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional processes use donor teeth as guides for preparing new sockets, then the donor teeth can be used to guide socket preparation, but multiple fittings are required leading to prolonged extra-alveolar time and damage to PDL cells
Solution Approach 1:
A 3D printed socket preparation guide is fabricated before tooth extraction based on CBCT imaging and digital planning. This preliminary guide allows precise socket preparation to be performed before the tooth is removed, eliminating the need for multiple fitting attempts after extraction and significantly reducing extra-alveolar time for the tooth.
Solution Approach 2:
A digital replica of the donor tooth is created from CBCT data, and a 3D printed model or guide is produced from this digital copy. This copy serves as the guiding structure for socket preparation, providing the same fitting accuracy as the actual tooth would provide, but without requiring the actual tooth to be present during the preparation phase.
2Manufacturing precision
If multiple fittings of donor teeth are performed to achieve proper fit, then accurate socket preparation can be achieved, but injury to PDL cells increases reducing transplant success
Solution Approach 1:
The socket preparation guide is created and fitted before tooth extraction, allowing precise socket shaping to be completed in advance. This eliminates the need to repeatedly insert and remove the actual tooth during fitting attempts, thereby preventing mechanical trauma and ischemic damage to the periodontal ligament cells that would otherwise occur during multiple post-extraction fitting attempts.
Solution Approach 2:
The 3D printed socket preparation guide acts as an intermediary tool that provides the necessary guidance for accurate socket preparation without requiring the actual donor tooth to be present. This intermediary device transfers the geometric information needed for precise fitting while keeping the vulnerable tooth and its PDL cells out of the mechanical fitting process entirely.
3Loss of time
If rapid prototyping replicas are used instead of donor teeth, then extra-alveolar time is reduced and PDL cell injury is minimized, but multiple fittings are still required
Solution Approach 1:
The socket preparation guide is fabricated in advance using rapid prototyping technology from digital impressions. By performing the socket preparation before tooth extraction with this pre-fabricated guide, the need for multiple post-extraction fitting attempts is eliminated, reducing both extra-alveolar time and the complexity of the overall fitting process.
Data Source
AI summary
A socket preparation tool configured to facilitate autotransplantation of a donor tooth to a recipient site is provided. The socket preparation tool includes a tooth replica of the donor tooth. A coronal portion is optionally included for facilitating alignment of the tooth replica adjacent teeth during a simulated autotransplantation. A radicular portion includes a smooth surface configured to facilitate compression of soft bone or soft tissue of the tooth replica or a contoured surface adapted for filing or cutting bone of the tooth replica. A cylindrical attachment is configured to be coupled to the tooth replica, such as via a receiver. A method of guided autotransplantation of a donor tooth via the customized socket preparation tool includes at least fitting and adjusting the socket preparation tool coupled to the tooth replica in the recipient site, before extracting the donor tooth.