Naslov
A Three-Dimensional Evaluation of Microleakage of the Class V Cavities Prepared by the Very Short Pulse Mode of the Er : YAG Laser

Autori
Jukić Krmek, Silvana ; Bogdan, Ivana ; Simeon, Paris ; Prpić Mehičić, Goranka ; Katanec, Davor ; Anić, Ivica

Izvornik
Lasers in medical science (0268-8921) 25 (2010), 6; 823-828

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

Ključne riječi
microleakage; Er:YAG laser; flowable; class V cavities; dye penetration

Sažetak
The aim of this study was to evaluate micro-leakage along resin restoration placed in the cavities prepared by Er:YAG laser, with and without acid etching, and comparing it with the diamond-drilled cavities. Thirty intact molars were divided in three equal groups. In group I, the teeth received class V cavities prepared with diamond drill. Cavities in group II and III were prepared by an Er:YAG laser (400 mJ/15 Hz for enamel and 250 mJ/10 Hz for dentin). Group I and II were acid-etched and, the adhesive system and flowable composite was applied to all cavities. The specimens were first immersed in dye for 24 hours and after that in 5% nitric acid for 72 hours for softening. The fillings were extracted and photographed through dissecting microscope. The leaked area was measured by using the specially designed software. The Kruskal-Wallis test showed that the best ranking was Group II (m.r.=27.46), followed by Group I (m.r.=33.48) and, lastly, Group III (m.r.=45.15). The differences between Groups I and III (p=0.023), and between Groups II and III, were statistically significant (p=0.080). The minimum microleakage was found in those cavities prepared by Er:YAG laser and subsequently acid-etched, whereas the maximum in the lased cavities without etching ; the traditional diamond-drilled acid-etched cavities produced medium leakage.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

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