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Updated: Jun 8, 2025

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A Patient-Specific 3D Printed Lingual Nerve Protector in Third Molar Extraction.

Hye-Won Kim1, Moonsoo Kim2, Seok-Ho Kim3

  • 1Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University, Cheonan, Chungcheongnam-do.

The Journal of Craniofacial Surgery
|November 1, 2024
PubMed
Summary

A new 3D-printed device protects the lingual nerve during wisdom tooth removal, reducing injury risk. This patient-specific protector enhances surgical safety without needing flap retraction.

Keywords:
3D printinglingual nerve injurypatient-specific modelingthird molartooth extraction

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Medical Device Design

Background:

  • Lingual nerve injury is a significant risk during mandibular third molar extraction.
  • Such injuries can lead to persistent functional impairments like altered sensation or pain.
  • Current surgical techniques may not fully mitigate the risk of lingual nerve damage.

Purpose of the Study:

  • To introduce a novel, patient-specific 3D-printed lingual nerve protector.
  • To evaluate the device's potential to minimize lingual nerve injury during mandibular third molar extraction.
  • To enhance the safety and efficiency of this common dental procedure.

Main Methods:

  • Utilized computed tomography (CT) data for precise patient anatomy mapping.
  • Fabricated custom lingual nerve protectors using 3D printing technology.
  • Designed the protector with a self-retaining structure for direct shielding of the lingual nerve and mucosa.

Main Results:

  • The 3D-printed protector effectively shields the lingual nerve from the surgical field.
  • The device operates without the need for lingual flap retraction, simplifying the procedure.
  • Demonstrated a reduced risk of iatrogenic lingual nerve injury.

Conclusions:

  • Patient-specific 3D-printed lingual nerve protectors offer a promising solution for preventing nerve damage.
  • This innovative device enhances surgical safety and procedural ease in mandibular third molar extractions.
  • Further clinical studies are warranted to validate the long-term efficacy and widespread applicability of this protective device.