Naslov
Influence of different pulses of Er:YAG laser based on Variable Square Pulse technology on microtensile bond strength of a self-etch adhesive to dentin

Autori
Baraba, Anja ; Dukić, Walter ; Chieffi, Nicoletta ; Ferarri, Marco ; Anić, Ivica ; Miletić, Ivana

Izvornik
Photomedicine and laser surgery (1549-5418) 31 (2013), 3; 116-124

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
bond strength; Er:YAG laser; self-etch adhesive

Sažetak
Background and objective: The second generation Er:YAG Fidelis laser introduced the Variable Square Pulse technology (VSPt) which enables higher ablation speed in enamel and dentin in comparison to high-speed and low-speed handpieces. The aim of the study was to evaluate the microtensile bond strength of a composite resin to dentin modified with three different pulses of the Er:YAG laser based on Variable Square Pulse technology and with one self-etch adhesive. Materials and methods: 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 dentine: 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 microtensile bond strength was tested with a universal testing machine. Two specimens from each experimental group were subjected to SEM examination, to observe the bonding surface. Results: Dentin surface treated with SSP showed significantly lower microtensile bond strength values in comparison to the control group and SP group (p<0.05). Conclusion: The use of SP and MSP of the Er:YAG laser with one-step self-etch adhesive does not impair microtensile bond strength in dentin, while SSP may not be suitable for dentin surface treatment prior to bonding procedures.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

Napomena
Rad je kao poster prezentiran na skupu Kongres s međunarodnim sudjelovanjem : Stomatologija svakodnevna praksa, održanom od 08-09.04.2011.g., Zagreb, Hrvatska ; na hrvatskom j. objavljen u Knjizi sažetaka ; 2011.g. ; str. 7-7.

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