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Magnetic Resonance Imaging

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Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention

Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention

Published on: September 18, 2015

A new retainer using magnetic attachment.

Fujio Tsuchida¹, Yuko Suminaga, Norio Takishin

¹Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan. tsuchida-f@tsurumi-u.ac.jp

Nihon Hotetsu Shika Gakkai Zasshi

|November 28, 2008

Summary

A novel magnetic attachment retainer for removable partial dentures offers superior retention and protects abutment teeth. This innovative design effectively addresses challenges with tipped teeth, ensuring long-term function and periodontal health.

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Area of Science:

Dental prosthetics
Biomaterials engineering

Background:

Masticatory disturbance due to missing mandibular teeth presents a challenge for conventional prosthetic solutions.
Tipped abutment teeth, such as the mandibular left canine in this case, complicate the fabrication of removable partial dentures.

Observation:

A 58-year-old male patient experienced masticatory difficulties due to missing premolars and molars.
The adjacent mandibular left canine exhibited significant labial tipping, making traditional clasp application difficult.

Findings:

A cobalt-chromium removable partial denture with a new magnetic attachment retainer was successfully fabricated and delivered.
The retainer features a buccal hook arm with bucco-lingual sliding action and a magnetic locking mechanism.
After six years, the abutment tooth and surrounding periodontal tissues remained healthy, with the denture functioning effectively.

Implications:

This magnetic attachment retainer minimizes the need for clasp elasticity, reducing the required block-out area and enhancing retention and bracing.
The system provides advantages similar to sectional dentures, protecting the abutment tooth and preserving its natural form.
The design offers a viable solution for cases involving natural or tipped teeth, providing adequate retentive force without hazardous lateral forces.