Comparative study of CO2 and Nd:YAG laser on dentin layer of human root canals of permanent teeth utilizing scanning electron microscopy

Aldo Brugnera Jr.; Marcia C. S. Lopes; Koukichi Matsumoto; Ii-Sei Watanabe

doi:10.1117/12.306030

22 April 1998 Comparative study of CO₂ and Nd:YAG laser on dentin layer of human root canals of permanent teeth utilizing scanning electron microscopy

Aldo Brugnera Jr., Marcia C. S. Lopes, Koukichi Matsumoto, Ii-Sei Watanabe

Author Affiliations +

Proceedings Volume 3248, Lasers in Dentistry IV; (1998) https://doi.org/10.1117/12.306030
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

The present paper investigated the effects of two different laser beams on dentin and root canal walls. Five human intact teeth (incisors and canines), with endodontic treatment accomplished by Paiva and Antoniazzi technique, had their crowns separated from the roots using a diamond teeth. After polishing the dentin surfaces, they were irradiated with CO₂ and NdYag laser and analyzed using SEM and light microscopy. The light microscopy revealed some cicunscribed carbonized areas with some cracks of varied depths in all samples but indicated that the CO₂ laser, at power level of 5 watts, was more effective than NdYag laser at power level of 2 watts. The SEM showed formation of circular depressions with areas containing dentin fusion, melted dentin on small holes on the vitrified surfaces. From the data obtained, it was concluded that the methods analyzed are able to remove the remaining residues on the dentin layer and root canal walls. However, no complete fusion of the dentin layer occurred.

Citation Download Citation

Aldo Brugnera Jr., Marcia C. S. Lopes, Koukichi Matsumoto, and Ii-Sei Watanabe "Comparative study of CO₂ and Nd:YAG laser on dentin layer of human root canals of permanent teeth utilizing scanning electron microscopy", Proc. SPIE 3248, Lasers in Dentistry IV, (22 April 1998); https://doi.org/10.1117/12.306030

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