Incision properties and thermal effects of CO2 lasers in soft tissue

Petra B. B. Wilder-Smith; Anna-Marie A. Arrastia-Jitosho; Lih-Huei L. Liaw; Michael W. Berns

doi:10.1117/12.207430

1 May 1995 Incision properties and thermal effects of CO₂ lasers in soft tissue

Petra B. B. Wilder-Smith, Anna-Marie A. Arrastia-Jitosho, Lih-Huei L. Liaw, Michael W. Berns

Proceedings Volume 2394, Lasers in Dentistry; (1995) https://doi.org/10.1117/12.207430
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

Thermal and histological events resulting from soft tissue incision using CO₂ lasers at 9.3 (mu) or 10.6 (mu) , fitted with a hollow wave guide or an articulated arm delivery system respectively, were investigated. In 9 fresh pigs' mandibles, standardized incisions 3 cm in length were made in the oral mucosa. Incisions were performed in the cw mode at 1 W, 4 W, and 12 W. Thermal events were measured in adjacent soft tissues using thermocouples. Incisions were dissected out, fixed, embedded in paraffin wax, sectioned and stained with Serius Red. The Students' t-test for paired data was used to compare zones of necrosis, zones of collagen damage and thermal events. No significant temperature rise was measured during irradiation at any timepoints or power settings (p < 0.05). Results were very similar for the two lasers with significantly different results obtained only at the 12 W setting (p < 0.05). Vertical incision depths and horizontal incision widths did not differ significantly (p < 0.0001) at 12 W and 4 W. Horizontal and vertical zones of necrosis did not differ significantly (p < 0.0001) either between the two lasers at 12 W and 4 W. Thus the thermal and histological events occurring during soft tissue incision were similar using these two lasers, despite the difference in wavelength and delivery system.

Citation Download Citation

Petra B. B. Wilder-Smith, Anna-Marie A. Arrastia-Jitosho, Lih-Huei L. Liaw, and Michael W. Berns "Incision properties and thermal effects of CO₂ lasers in soft tissue", Proc. SPIE 2394, Lasers in Dentistry, (1 May 1995); https://doi.org/10.1117/12.207430

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available