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Related Experiment Video

Updated: Jul 9, 2026

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Vertical ramus osteotomy with Er:YAG laser: a feasibility study.

M Papadaki1, A Doukas, William A Farinelli

  • 1Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA 02114, USA. mpapadaki@partners.org <mpapadaki@partners.org>

International Journal of Oral and Maxillofacial Surgery
|November 27, 2007
PubMed
Summary

Erbium:yttrium aluminum garnet (Er:YAG) laser osteotomy is feasible for vertical ramus procedures. Higher energy per pulse significantly reduced surgical time, with 2000 mJ/pulse proving most efficient for bone cutting.

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Area of Science:

  • Biomedical Engineering
  • Oral and Maxillofacial Surgery
  • Laser Dentistry

Background:

  • Laser surgery offers advantages like reduced bleeding and pain, driving interest in bone cutting applications.
  • Minimally invasive maxillofacial surgery can benefit from precise laser bone cutting.
  • Er:YAG lasers show potential for minimal thermal damage, precise cuts, and enhanced bone healing.

Purpose of the Study:

  • To evaluate the feasibility of Er:YAG laser for vertical ramus osteotomy.
  • To determine the optimal energy per pulse for efficient Er:YAG laser bone cutting.

Main Methods:

  • Vertical ramus osteotomies were performed on pig mandibles, a pig cadaver head, and a human mandible.
  • Er:YAG laser settings with varying energy per pulse (0.5, 1, 1.5, 2 J/pulse) were tested.

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  • Efficiency was measured by the time required for osteotomy completion.

    • Main Results:

    • Vertical ramus osteotomy was achievable with all tested Er:YAG laser energy levels.
    • Surgical time decreased significantly as energy per pulse increased, from 28 to 5.33 minutes.
    • The highest energy setting (2000 mJ/pulse) demonstrated the most time-efficient osteotomy on human and cadaver specimens.

    Conclusions:

    • Er:YAG laser osteotomy is a viable technique for vertical ramus procedures.
    • Increased energy per pulse enhances efficiency, reducing operative time.
    • Smooth, carbonization-free bone cuts were consistently achieved with the Er:YAG laser.