Early bond strengths of 4-META/MMA-TBB resin cements to CAD/CAM resin composite

Abstract

The purpose of this study was to evaluate the early tensile bond strengths of three different resin cements; Super Bond C&B (conventional and quick type) and ResiCem to a CAD/CAM composite block. A CAD/CAM composite block (Shofu Block HC) was ground and silanized according to the manufacturers' instructions before cementation. A conventional tensile bond strength test (Ø: 4 mm) was performed 10 min, 1 h and 24 h after bonding. Super Bond C&B (quick type) showed the highest bond strength at 24 h. However, results of a three-point bend test showed the mechanical properties were weaker for the Super Bond C&B cements compared with composite cement, Resicem. The 4-META/MMA-TBB resin is a suitable resin cement to bond to a CAD/CAM composite block.

Effect of differences in the type of restoration and adhesive resin cement system on the bonding of CAD/CAM ceramic restorations

“…No previous studies have examined the effect of different types of restoration (i.e., inlay, onlay, and crown) on the µ-TBS, especially the µ-TBS obtained from the intra-cavity wall after a dynamic load. Evaluations of the bond strength mainly focused on the mean value of the µ-TBS [4][5][6]9,10,16,17) . This is a quantitative evaluation that is easy to understand, because the magnitude of the obtained data can be simply related to the bond strength.…”

“…Both are useful as luting materials for not only metal-free but also metal restoratives. Previous studies focused on the tensile bond strength have reported that both cement systems demonstrate different bonding behaviors to human dentin 4) and CAD/ CAM composite blocks 5) . The microtensile bond strength (µ-TBS) test developed by Sano et al 6) is an effective means of investigating the internal bond strength that is influenced by various intraoral stresses, such as thermal and cyclic load stresses.…”

Clinical outcomes of single crown restorations fabricated with resin-based CAD/CAM materials

“…Another possible explanation is that the luting procedure, using adhesive luting agents, is technically demanding and could affect bonding performance. In addition, the resin-based CAD/CAM materials are pre-fabricated and completely polymerized by the manufacturer, which means a poor oxygen-inhibited layer is present on the surface of the materials [14]. Moreover, several studies indicated that the hoop stress that originated at the circumference of the restorations with occlusal forces led to the loosening of the restorations [9,15].…”

Effects of alumina airborne-particle abrasion on the surface properties of CAD/CAM composites and bond strength to resin cement

“…This debonding failure is attributed to poor adhesion of the CAD/CAM composites or incompatible preparation of the crown material and abutment tooth 10,11,15) . To overcome this issue, many fundamental studies have been conducted to elucidate the adhesive properties of the CAD/CAM composites [16][17][18] . For the bonding protocol of the CAD/CAM composites, several studies and manufacturers' instructions suggested that composite crowns should be subjected to alumina airborne-particle abrasion followed by application of a primer containing a silane-coupling agent (hereafter silane primer) [18][19][20][21][22][23][24][25][26] .…”