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

Abstract

The effect of differences in the type of restoration and adhesive resin cement system on the bonding of CAD/CAM ceramic restoration after cyclic loading was examined quantitatively and qualitatively. Seventy-two human maxillary first molars were divided into three restoration groups: MOD-inlay, MODP-onlay, and crown. Immediate dentin sealing was applied to the exposed dentin of all prepared specimens. The 24 specimens of each restoration group were further divided into another three groups, and a different adhesive resin cement system was applied to each group for cementation. All restoratives were fabricated from feldspathic-ceramic-blocks and cemented with each adhesive resin cement system according to the manufacturer's instructions. The microtensile bond-strength was measured after cyclic loading and was not significantly affected by differences in the type of restoration or adhesive resin cement system. However, the type of restorations and adhesive resin cement systems did show significant differences in terms of the bonding reliability.

Effect of air abrasion pressure and CAD/CAM milling on microtensile bond strength of reinforced composite inlays to immediately sealed dentin: An invitro comparative study

“…18 In fact, very little studies tested the microtensile bond strength in inlays evaluating the bond strength obtained with the intra-cavity walls. 19 Class I cavities employed in the present study are known to suffer from the adverse effect of configuration factor (C-factor), this factor is known to cause stresses within the cement layer as a result of cement shrinkage after polymerization. 12 Such stresses could affect the bond strength.…”

“…21 The quantitative μTBS test was employed in the present study, as it is believed to provide easy to understand data that can be simply related to the bond strength. 19 It was used rather than shear bond strength test, as it was claimed that the small size of the tested specimens produced more favorable stress distribution during testing, allowing the resulting failure to be closer to their true ultimate values. 16 Based on the results of the present study, the null hypothesis was rejected.…”

Effects of Removal Conditions on Mercury Amount Remaining in the Oral Cavity and inside Drainage System after Removing Dental Amalgams

“…In the base plane of the mold, the teeth were placed in acrylic-cylindrical molds (15 mm of inner diameter) using self-curing resin (Ostron II, GC, Tokyo, Japan), and the height of the tooth, the distance between the occlusal plane and the base plane of the mold, was set to 25 mm. A 2-mm depth of cross-shaped cavity ( Figure 1 ) was prepared in the center of the tooth using a cavity duplication machine (prototype device, Tokyo Giken, Tokyo, Japan) [ 33 , 34 , 35 , 36 ] with a diamond point (123, Horico Dental, Berlin, Germany). Then, dentin undercuts were prepared using an inverted cone bur (653-002, Tokyo Dental Industrial, Tokyo, Japan).…”

Effect of a temporary sealing material on the bond strength of CAD/CAM inlay restorations with resin-coating technique

“…The SE2 primer was first applied to dentin surfaces for 20 s and air dried. Then, the bonding agent of SE2 was spread, gently air-dried and light cured for 10 s. Afterwards, ES flow was daubed thinly on SE2 applied dentin surfaces with a disposable applicator brush 5,10,17,18) (3L orange, Sun Medical, Shiga, Japan) and light-cured for 20 s. Then resin-coated dentin surfaces were wiped with alcohol pellets. The thickness of resin-coating layer was checked by confocal laser scanning microscopy (VK-X150, Keyence, Osaka, Japan) observation of perpendicular cut specimen in preliminary experiment.…”