IADR Abstract Archives
Adhesive Potential of Different Luting Systems to Bovine Dentin
Objectives: This study aimed to compare the bonding potential of different adhesive luting systems to bovine dentin using the x-bar tensile bond strength test.
Methods: The adhesives luting systems under investigation were a universal self-adhesive luting resin with corresponding universal adhesive (Panavia SA Cement Universal, PSCU, and Clearfil Universal Bond Quick, CUBQ, Kuraray Noritake), a dual-curing luting composite with self-etch adhesive (Multilink Automix, MLA and Multilink Primer, PAB, Ivoclar Vivadent), and a dual-curing luting composite with universal adhesive (RelyX Ultimate, RXU and Scotchbond Universal, SBU, 3M).
Bovine incisors were embedded in resin, and rectangular dentin rods with a width of 3 mm were prepared (n=180) and then divided into 3 groups (n=60). Two dentin rods were bonded with the materials under investigation at a 90° angle to each other, resulting in 30 x-bar specimens per group. One-half of the specimens per group were stored in 37 ° C distilled water for 24 hours, and the other half was subjected to thermal cycling (TC) with 10000 cycles (5/55°C, 30s dwell time). Tensile bond strength (TBS) was measured by pulling the samples apart using a universal testing machine (Z2.5, Zwick-Roell). Statistical evaluation was carried out using a one-factor ANOVA with a Tukey post-hoc test with a significance level of 0.05.
Results: Statistical analysis showed that after 24h RXU+SBU reached the highest TBS of 5.8±3.5 MPa and was significantly higher than PSCU+CUBQ (3.1±2.5 MPa; p=.044). MLA+PBA (3.7±2.8 MPa) did not have a significant difference in TBS compared to RXU+SBU and PSCU+CUBQ (p>.05). After TC, there were no significant differences (p>.05) between RXU+SBU (3.4±2.8 MPa), PSCU+CUBQ (3.1±2.2 MPa) and MLA+PAB (2.6±2.9 MPa).
Conclusions: After in-vitro hydrothermal loading no significant differences could be found between the different adhesive luting systems.
Methods: The adhesives luting systems under investigation were a universal self-adhesive luting resin with corresponding universal adhesive (Panavia SA Cement Universal, PSCU, and Clearfil Universal Bond Quick, CUBQ, Kuraray Noritake), a dual-curing luting composite with self-etch adhesive (Multilink Automix, MLA and Multilink Primer, PAB, Ivoclar Vivadent), and a dual-curing luting composite with universal adhesive (RelyX Ultimate, RXU and Scotchbond Universal, SBU, 3M).
Bovine incisors were embedded in resin, and rectangular dentin rods with a width of 3 mm were prepared (n=180) and then divided into 3 groups (n=60). Two dentin rods were bonded with the materials under investigation at a 90° angle to each other, resulting in 30 x-bar specimens per group. One-half of the specimens per group were stored in 37 ° C distilled water for 24 hours, and the other half was subjected to thermal cycling (TC) with 10000 cycles (5/55°C, 30s dwell time). Tensile bond strength (TBS) was measured by pulling the samples apart using a universal testing machine (Z2.5, Zwick-Roell). Statistical evaluation was carried out using a one-factor ANOVA with a Tukey post-hoc test with a significance level of 0.05.
Results: Statistical analysis showed that after 24h RXU+SBU reached the highest TBS of 5.8±3.5 MPa and was significantly higher than PSCU+CUBQ (3.1±2.5 MPa; p=.044). MLA+PBA (3.7±2.8 MPa) did not have a significant difference in TBS compared to RXU+SBU and PSCU+CUBQ (p>.05). After TC, there were no significant differences (p>.05) between RXU+SBU (3.4±2.8 MPa), PSCU+CUBQ (3.1±2.2 MPa) and MLA+PAB (2.6±2.9 MPa).
Conclusions: After in-vitro hydrothermal loading no significant differences could be found between the different adhesive luting systems.