Erbium:YAG laser contouring of the nasal dorsum: a preliminary investigation

Mai Thy Truong; Boris Majaron; Nidhi S. Pandoh; Brian Jet-Fei Wong M.D.

doi:10.1117/12.427775

21 May 2001 Erbium:YAG laser contouring of the nasal dorsum: a preliminary investigation

Mai Thy Truong, Boris Majaron, Nidhi S. Pandoh, Brian Jet-Fei Wong M.D.

Proceedings Volume 4244, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XI; (2001) https://doi.org/10.1117/12.427775
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

In conventional aesthetic rhinoplasty operations, manual or powered rasps are used to reduce the osseo-cartilagenous nasal dorsum. This tactile method requires palpation of the instrument and the dorsum during surgery to estimate the degree of volume reduction, and often requires forceful manipulation of the dorsum which may illicit pain during surgery and contribute to post-operative edema and echymosis. In this preliminary study, we investigated the use of the Erbium:YAG laser ((lambda) equals294 micrometers ) to reduce bone and cartilage using ex-vivo porcine nasal dorsum and human cadaveric tissues. The short pulsed length and high absorption of this laser in biologic tissues results in minimization of thermal injury which are ideal for non- contact optical contouring of osseous and cartilagenous tissues in the face. Two Erbium:YAG lasers were used to ablate fresh porcine nasal bone and compared for their use. One Erbium:YAG laser, the Fidelis Laser, Fontana Medical Lasers, Ljubljana, Slovenija with variable pulse repetition rates (2 to 50 Hz), pulse energy (80 to 1000 mJ), and pulse duration (100, 300, 750 and 1000 microsecond(s) ) was used and compared to the Ultrafine Erbium:YAG laser, Coherent Inc., Santa Clara California, with variable pulse repetition rate (2 to 10 Hz), pulse energy (2-16 J/cm²), and spot diameter (2-6 mm). Only laser parameters approximating the conditions for thermal confinement were evaluated.

Citation Download Citation

Mai Thy Truong, Boris Majaron, Nidhi S. Pandoh, and Brian Jet-Fei Wong M.D. "Erbium:YAG laser contouring of the nasal dorsum: a preliminary investigation", Proc. SPIE 4244, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XI, (21 May 2001); https://doi.org/10.1117/12.427775

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