Naslov
Microleakage of heat cured and ultrasound cured GIC restoration

Autori
Goršeta, Kristina ; Negovetić Vranić, Dubravka ; Glavina, Domagoj ; Škrinjarić, Ilija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
9th Congress of the European Academy of Paediatric Dentistry, Dubrovnik, Croatia, / - , 2008

Skup
9th Congress of the European Academy of Paediatric Dentistry, Dubrovnik, Croatia, 2008

Mjesto i datum
Dubrovnik, Hrvatska, 29.05.2008. - 01.06.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
microleakage; glass ionomer; heat curing; ultrasound curing

Sažetak
Aim. The aim of this study was to assess the influence of externally applied 'command' set methods on the microleakage of several glass-ionomer cements (GIC). Methods. Four different restorative GICs (Ionofil Molar AC, VOCO, LOT 540795 ; Fuji VII, GC, LOT 0410251 ; Fuji IX GP Fast, GC, Lot 0605021 ; Megacem, Megadenta, LOT 870462) were cured using three different methods: standard curing (SC), ultrasonic excitation (UC) and by an external heat source (HC). Different conditioning agents (10% polyacrilic acid, 10% citric acid) were also used. Sample comprised 180 teeth with 360 class V restorations placed on lingualy and vestibulary surface of each tooth. After thermocycling the teeth were immersed in a dye solution for 24 h, embedded in acrylic resin, sectioned longitudinally (Minitom, Struers A/S) and evaluated under a stereomicroscope. Oberholtzer criteria were used for evaluation of 5122 margins. Data were analysed using three-way ANOVA. Results. The heat-cured GIC showed statistically significant lower microleakage values than the other tested groups (SC, UC) (p<0.001). GICs in groups with HC and conditioned cavities showed lower score of microleakage. The highly viscous material Fuji IX GP Fast in HC and conditioned cavities group demonstrated the best marginal adaptation. The other three products behaved very similarly on heating treatment. Leakage at the enamel margins was significantly lower than at the cementum/dentin margins (p<0.001). Conclusion. Heating of GIC decrease microleakage, improves the properties of GIC restoration and can be used as 'command' set method.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

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