Effect of thermocycling on the bond strength between dual-cured resin cements and zirconium-oxide ceramics

Abstract

The present study evaluated the durability of bond strength between zirconia and 3 different resin cements. Thirty stabilized tetragonal zirconium-dioxide blocks were duplicated in dual-curing resin core build-up material specimens. Resin blocks were randomly luted to zirconium surfaces using 1) Clearfil Esthetic Cement (CLF), 2) RelyX Unicem Aplicap (RELX), or 3) Multilink Automix (MLA). After 24 h, half of the specimens from each of the 3 groups were loaded in tension until fracture (0.5 mm/min). The remaining half were tested after 6,000 thermal cycles (5 to 55°C). Data were analyzed using 2-way ANOVA and the Tukey test (α = 0.05). Fractographic analysis was performed using a stereomicroscope. Tensile bond strength values were significantly affected by the luting agent system employed and by thermal aging (P < 0.001). The highest tensile bond strength values in non-thermal-aged groups were observed for specimens from the RELX and CLF groups. In contrast, in the thermal-aged groups, the highest tensile bond strength values were for the MLA and RELX groups. Moreover, while thermocycling significantly affected bond strengths in the RELX and CLF groups, the mean strength of the MLA group did not significantly change after aging. There was little difference in the distribution of failure modes in any group.

Fracture resistance of prepared premolars restored with bonded new lab composite and all‐ceramic inlay/onlay restorations: Laboratory study

“…Conversely, zirconia ceramic is not acid etchable material. Therefore, when zirconia ceramic inlay and onlay groups were subjected to thermocycling, there was a degradation of luting composite/zirconia ceramic bonds and this could be the reason for the adhesive failure in zirconia groups …”

Effect of ultrashort pulsed laser on bond strength of Y-TZP zirconia ceramic to tooth surfaces

“…Therefore, these ceramics are not suitable for acid etching 8,[14][15][16] . For this reason, surface treatment methods ranging from air abrasion with aluminum oxide (Al 2O3) 8,[17][18][19][20] and silica coating with silica-modified Al2O3 particles 9,17,18,21) to laser application are frequently used on Y-TZP restorations.…”

Effect of surface conditioning on bond strength between zirconia ceramic and composite resin luting agent

“…23 Yapılan bir başka çalışmada ise Clearfil Esthetic siman, Rely X ve Multilink automix simanları karşılaştırılmış ve termal döngü sonrası Multilink automix'in bağlanma direnci termal döngü sonrası değişmezken Clearfil Esthetic siman ve Rely X simanlarının bağlanma direnci termal döngü sonrası düşmektedir. 24 Çalışmamızda da termal döngü uygulamasının yapıştırıcı siman sistemlerinin bağlanma direnci değerleri üzerine etkileri araştırılmıştır. Yüzey hazırlama işlemlerinden kumlama, zirconia primer ve rocatec ile hazırlanan gruplarda Panavia F ile simante edilmiş örneklerde termal döngü sonrası bağlanma direnci değerleri düşerken, Ceramic Primer ve CoJet ile hazırlanan gruplarda Panavia F ile simante edilmiş örneklerin bağlanma direnci değerleri termal döngü sonrası değişmemektedir.…”