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Updated: Feb 5, 2026

08:15
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
Published on: February 17, 2023
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HR Spring: A Simplified Approach to Simultaneous Space Gaining and Derotation.
Summary
A novel spring design offers a straightforward method for simultaneously increasing space and correcting rotation in dental cases. This technique effectively realigns severely rotated lower incisors, as demonstrated in a clinical case study.
Area of Science:
- Orthodontics
- Biomaterials Engineering
Background:
- Dental rotations and crowding present common orthodontic challenges.
- Existing methods for derotation and space gaining can be complex or require multiple appliances.
Purpose of the Study:
- To introduce a simple and effective spring design for simultaneous space gaining and derotation.
- To demonstrate the clinical application of this spring design in aligning a severely rotated lower central incisor.
Main Methods:
- A novel spring design was conceptualized and fabricated.
- The spring's application was illustrated using a clinical case involving a severely rotated lower central incisor.
Main Results:
- The spring design facilitated simultaneous space gaining and derotation.
- Successful alignment of the severely rotated lower central incisor was achieved.
Conclusions:
- The introduced spring design provides a simple and efficient solution for managing dental rotations and space discrepancies.
- This technique offers a viable alternative for orthodontic treatment planning, particularly for complex incisor alignment cases.
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