Effect of various intraoral repair systems on the shear bond strength of composite resin to zirconia

Abstract

PURPOSEThis study compared the effect of three intraoral repair systems on the bond strength between composite resin and zirconia core.MATERIALS AND METHODSThirty zirconia specimens were divided into three groups according to the repair method: Group I- CoJet™ Repair System (3M ESPE) [chairside silica coating with 30 µm SiO2 + silanization + adhesive]; Group II- Ceramic Repair System (Ivoclar Vivadent) [etching with 37% phosphoric acid + Zirconia primer + adhesive]; Group III- Signum Zirconia Bond (Heraus) [Signum Zirconia Bond I + Signum Zirconia Bond II]. Composite resin was polymerized on each conditioned specimen. The shear bond strength was tested using a universal testing machine, and fracture sites were examined with FE-SEM. Surface morphology and wettability after surface treatments were examined additionally. The data of bond strengths were statistically analyzed with one-way ANOVA and Tamhane post hoc test (α=.05).RESULTSIncreased surface roughness and the highest wettability value were observed in the CoJet sand treated specimens. The specimens treated with 37% phosphoric acid and Signum Zirconia Bond I did not show any improvement of surface irregularity, and the lowest wettability value were found in 37% phosphoric acid treated specimens. There was no significant difference in the bond strengths between Group I (7.80 ± 0.76 MPa) and III (8.98 ± 1.39 MPa). Group II (3.21 ± 0.78 MPa) showed a significant difference from other groups (P<.05).CONCLUSIONThe use of Intraoral silica coating system and the application of Signum Zirconia Bond are effective for increasing the bond strength of composite resin to zirconia.

Bond Strenght of Zirconia Submitted to Different Surface Treatments

“…MPa) [26]. However, the authors did not carry out thermal cycling and the specimen size was different from that of this study.…”

Structural and Chemical Characterization of Silica Spheres before and after Modification by Silanization for Trypsin Immobilization

“…It occurs because of their typical hydrophobicity, roughness, and surface area properties [7][8][9][10][11][12][13][14][15][16]. More recently, another field in which silanized silica materials have received special attention is their use as dental materials [17][18][19][20]. Tsai et al [21] made up a self-assembled film by deposition of silanized silica particles to obtain a surface with hydrophobic properties.…”

“…D' Acunzi et al [22] showed the use of silanized silica particles as a way to obtain superhydrophobic surfaces with the roughness adjusted by the drying process. Finally, Han et al [20] compared three resins for dental repair, and those obtained from silanized silica had significantly higher surface roughness. Figure 1(f) shows nanomechanical results obtained from force-distance curves of control and silanized silica surfaces.…”

Farklı yüzey işlemlerinin zirkonyanın ağız içi tamirine etkisi

“…10 Elmas frezler ile aşındırma, ağız içinde tamir yapılacağı zaman kırık yüzeyinde sıkça kullanılan bir metottur. Aşındırma ile hem kırık yüzeyindeki kontaminasyon kaldırılmış olur 11 hem de diğer yöntemlere göre gözle görülebilir daha pürüzlü yüzeyler sağlayarak mekanik bağlantı sağlanmış olur. 12,13 Bu çalışmanın amacı, dört farklı yüzey işlemine tabi tutularak kompozit rezin ile tamir edilmiş zirkonya alt yapının yaşlandırma sonrası kompozit rezin ile olan makaslama bağlanma dayanımının değerlendirilmesidir.…”