Influence of different surface treatments of nickel chrome metal alloy and types of metal primer monomers on the tensile bond strength of a resin cement

Abstract

ObjectiveTo evaluate the effect of different surface treatments of nickel chrome (NiCr) with the type of metal primer monomers on the conventional tensile bond strength (CTBS) of resin cement.MethodsForty disks of NiCr alloy were prepared for CTBS test and grouped as follows: group (1) no surface treatment (control group), group (2) oxide layer only, group (3) air abrasion, and group (4) air abrasion with an oxide layer. Each main group was subdivided into two subgroups (n = 5) depending upon the type of metal primer used for metal treatment. All specimens were bonded with resin cements. The CTBS was tested using a tensile testing machine. The data were statistically analyzed with One-way ANOVA, Two-way ANOVA, and T-test at 0.05 level of significance.ResultsSignificant differences in the mean value of the CTBS between different surface treatments (P ≤ 0.05) were observed. Tukey's test showed that air abrasion surface treatment had the highest mean value followed by the air abrasion with an oxide layer and oxide layer only. The control group showed the lowest value of significant difference compared to all treated groups (P ≤ 0.05).ConclusionsCTBS of self-adhesive resin cement to NiCr is dependent on surface treatment. Two types of the metal primer of different monomer contents 10-methacryloyloxydecyldihydrogenphosphate (MDP) or Thiophosphoricmethacrylate (MEPS) show similar behavior on the tensile bond strength.

Shear Bond Strength of Two Repair Systems to Zirconia Ceramic by Different Surface Treatments

“…Air abrasion is considered a more efficient strategy to modify the surface of hard zirconia than laser irradiation due to the roughening of the surface of the material, increased surface area, and clean and enhanced surface wettability that produces mechanical interlocking between the core zirconia or veneer ceramic and repair material. 28,29 This finding was supported by the SBS results. Some researchers have expressed that the micro porosities induced by surface modifications may consider a crack initiator, which leads to the weakening of ceramic materials.…”

effect of adhesive material and thermocycling on bond strength of intraoral repair materials on adhesive fracture in porcelain fused to metal restoration

“…Mounted samples were then finished using sand paper sizes 80, 120, 180, 240, 320 grit with a figure eight grinding pattern and cleaned with ultrasonic cleaning for 15 minutes to remove trapped residue. 4,12 The sample was then sandblasted using aluminum oxide (particle size 50 µm) at a pressure of 3 bar / 0.3 MPa for 15 seconds. Samples were washed with water for 20 seconds and air-dried for 20 seconds.…”

Resistencia adhesiva entre una aleación de níquel-cromo y un cemento resinoso sometidos a diferentes tratamientos de superficie

“…The 40 metal cylinders were randomly divided into 4 groups (i.e., GCONTROL, GZPRIMER, GSPLUS, and GSUNIVERSAL) and mechanically polished using an electric micromotor (Marathon 3 Champion, Saeyang Microtech Co. Ltd., China) with 400 and 600 grit metal sandpaper for 20 s on each grit (7,18). The mechanical surface treatment was the same in all groups: sandblasting with 50 µm Al2O3 particles (Dentaurum, USA), at a 10-mm distance measured with a 0.25-mm orthodontic wire attached to the nozzle of the dental office blaster (Bio Art, Sao Paulo.…”

“…In the same way, resin cements today are gaining popularity because they improve adhesion with their capability to produce a chemical bond with the oxide layer created on the metal surface (17). In addition, they better resist the stress generated during chewing due to their resinous matrix (18).…”