In-vitro evaluation of Er:YAG laser irradiation in apicoectomy and retrofilling cavity preparation compared to two other techniques

Selma Christina Cury Camargo; Giulio Gavini; Carlos de Paula Eduardo; Carlos Eduardo Aun; Jeffrey M. Coil

doi:10.1117/12.306031

22 April 1998 In-vitro evaluation of Er:YAG laser irradiation in apicoectomy and retrofilling cavity preparation compared to two other techniques

Selma Christina Cury Camargo, Giulio Gavini, Carlos de Paula Eduardo, Carlos Eduardo Aun, Jeffrey M. Coil

Author Affiliations +

Proceedings Volume 3248, Lasers in Dentistry IV; (1998) https://doi.org/10.1117/12.306031
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

The aim of this research was to evaluate under SEM observation, the apical cut surface and retrofilling cavity prepared with Er:YAG laser and two other conventional techniques. Thirty extracted human teeth were divided into two groups of 15 teeth each. For Group 1 apicoectomy was performed using high speed handpiece and diamond burs. For Group 2 Er:YAG* laser irradiation (wavelength of 2.94 micrometer, pulse width of 250 - 500 microseconds) was used in 400 mJ of energy, frequency of 6 Hz, on focus mode under destiled water refrigeration. Each group was divided into 3 subgroups. For groups G1A and G2A, retrofilling cavity preparations were performed using low speed handpiece and burs, for groups G1B and G2B Enac technique was indicated. Groups G1C and G2C Er:YAG laser irradiation was used under same energy level previously described. All specimens were prepared for SEM observations. Pictures were taken under 30x and 600x magnification. Two different observers analyzed the smoothness and morphological appearance of those preparations. Data's were collected showing a smoothness surface, no debries or smear layer on group 2 (Laser irradiation) compared to group 1. Differences were also noted when retrofiling cavities were analyzed.

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Selma Christina Cury Camargo, Giulio Gavini, Carlos de Paula Eduardo, Carlos Eduardo Aun, and Jeffrey M. Coil "In-vitro evaluation of Er:YAG laser irradiation in apicoectomy and retrofilling cavity preparation compared to two other techniques", Proc. SPIE 3248, Lasers in Dentistry IV, (22 April 1998); https://doi.org/10.1117/12.306031

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KEYWORDS

Er:YAG lasers

Tissues

Erbium

Scanning electron microscopy

Laser irradiation

Natural surfaces

Teeth

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