It can be seen from figure 12 that the bond strength of the new Kraton A polymer is almost double the strength that was obtained with the female luer connectors.
Caption: Figure 12- bond strength of tube connector assemblies prepared by ABS male luer connectors
The tensile bond strength
was tested using a Universal Testing Machine (UTM), Shimadzu, AGS 10 kn model.
To provide good adhesion and sustain the forces arising from mastication and orthodontic mechanotherapy, a minimum bond strength
of 5-10 Mpa is recommended (21).
Conclusion: Anti-oxidant treatment had a positive effect on the shear bond strength
of orthodontic brackets after tooth bleaching.
The bond strength
was calculated in MPa by dividing the load (N) by the surface contact area (mm2).
Moreover, to preserve enamel integrity without decreasing bond strength
, the etching time was set to 30 seconds, as suggested in several previous studies.
KEYWORDS: Bond strength
, Endosequence Root Repair Material (ERRM), Intracanal medicaments, Push-out test, Regenerative endodontic treatment.
The push-out bond strength
values (mPa) are presented in Table 2.
Figure 3 shows the direct shear failures of binary-medium specimens with different bond strengths
. The shear stress-displacement curve of the specimen with a bond strength
ratio of 0.25 under a normal stress of 3.0 MPa and damages at different stages are shown in Figure 3(a).
Average Bond Strength
. When specimen bond failure occurred, the whole interface exhibited bond failure.
Dimensionless Bond Strength
. Table 1 lists the collected test parameters, where D is the rebar diameter, C is the concrete cover depth, and [L.sub.m] is the bond length.
Endosequence BC coated GP was used without sealer and it was found to have the significantly lowest mean bond strength
compared with AH plus and conventional GP .
The use of an intermediate adhesive agent has also an impact on the bond strength
of the repair restorations (9, 19).
Several approaches have been proposed for adhesive bonded restorations, and different types of adhesive systems might promote also different patterns of bond strength
. Results in loss of adhesion of resin composites to dentin can be measured as a significant decrease in the microtensile bond strength
(mTBS) (Armstrong et al, 2010).