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Assisted Removal of Impacted Supernumerary Teeth Using HoloLens 2 and Mixed Reality.

Shi-Lin Liu¹, Ming Li², Fang-Qian Zhang¹

¹Resident, Department of Oral and Maxillofacial Surgery, Kunming Medical University School and Hospital of Stomatology, Kunming, China; Resident, Yunnan Key Laboratory of Stomatology, Kunming, China; Resident, Department of Oral Digital Center, Affiliated Stomatological Hospital of Kunming Medical University, Kunming, China.

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons

|January 17, 2026

Summary

This study presents a mixed reality system for impacted supernumerary tooth removal, using HoloLens 2 for real-time surgical guidance. This technology offers a minimally invasive alternative to traditional guides, potentially improving surgical outcomes.

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Area of Science:

Oral and Maxillofacial Surgery
Medical Technology
Mixed Reality Applications

Background:

Surgical removal of impacted supernumerary teeth often relies on traditional guides, which can be expensive and limiting.
Minimally invasive techniques are sought to reduce surgical trauma and improve patient outcomes.
Accurate localization of anatomical structures is crucial for successful surgical interventions.

Purpose of the Study:

To introduce and evaluate a novel mixed reality-based system for surgical removal of impacted supernumerary teeth.
To demonstrate the feasibility of using HoloLens 2 for real-time surgical navigation.
To explore the potential of this technology in reducing invasiveness and improving precision compared to conventional methods.

Main Methods:

Development of a mixed reality system integrating HoloLens 2.
Reconstruction of 3-dimensional virtual models from cone-beam computed tomography and intraoral scan data.
Superimposition of virtual models onto the surgical field for real-time visual guidance.

Main Results:

The system provides precise localization for impacted supernumerary teeth removal.
It enables minimally invasive procedures, potentially reducing surgical trauma.
Eliminates the need for costly and restrictive traditional surgical guides.

Conclusions:

Mixed reality technology, specifically using HoloLens 2, shows significant potential for enhancing surgical procedures like impacted supernumerary tooth removal.
Challenges such as hardware costs and learning curve exist but are expected to be overcome with advancements.
The technique holds promise for broader applications in localizing deep-seated tumors and foreign bodies.