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Ablative potential of four different pulses of Er:YAG lasers and low-speed handpiece (CROSBI ID 176555)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Baraba, Anja ; Perhavec, Tadej ; Chieffi, Nicoletta ; Ferrari, Marco ; Anić, Ivica ; Miletić, Ivana Ablative potential of four different pulses of Er:YAG lasers and low-speed handpiece // Photomedicine and laser surgery, 30 (2012), 6; 301-307. doi: 10.1089/pho.2011.3190

Podaci o odgovornosti

Baraba, Anja ; Perhavec, Tadej ; Chieffi, Nicoletta ; Ferrari, Marco ; Anić, Ivica ; Miletić, Ivana

engleski

Ablative potential of four different pulses of Er:YAG lasers and low-speed handpiece

The aim of the study was to evaluate the microtensile bond strength of a composite resin to dentin modified with three different pulse durations of the Er:YAG laser based on Variable Square Pulse technology and with one self-etch adhesive. The entire occlusal enamel was removed to obtain flat dentin surface for forty eight human molar teeth. The teeth were randomly divided into four experimental groups (n= 12 per group), according to the pretreatment of dentin: 1) control group ; 2) SSP (Super Short Pulse: 50 sec) ; 3) MSP (Medium Short Pulse ; 100 sec) and 4) SP (Short Pulse ; 300 sec) with Er:YAG laser. The energy of the laser used was 80 mJ with average power of 0.8 W. The microtensile bond strength was tested with a universal testing machine. Two specimens from each experimental group were subjected to SEM examination, to observe the irradiated surface. Dentin surface treated with SSP showed significantly lower microtensile bond strength values (24±9.8 MPa) in comparison to the control group and SP group (35.3±12.8 MPa and 32.9±10.7 MPa, respectively), (p<0.05). MSP and SP group did not show any statistically significant difference in microtensile bond strength in comparsion to control group (p>0.05). The use of SP and MSP of the Er:YAG laser with one-step self-etch adhesive does not impair or improve the microtensile bond strength in dentin, while SSP may not be suitable for dentin surface treatment prior to bonding procedures.

ablation; caries; Er:YAG; profilometer; scanning electron microscopy

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Podaci o izdanju

30 (6)

2012.

301-307

objavljeno

1549-5418

10.1089/pho.2011.3190

Povezanost rada

Dentalna medicina

Poveznice
Indeksiranost