Shear bond strengths of a ceramic system to alternative metal alloys

Melo, Renata Marques de; Travassos, Alessandro Caldas; Neisser, Maximiliano Piero

doi:10.1016/j.prosdent.2004.10.017

Cited by 95 publications

(79 citation statements)

References 16 publications

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“…Several authors considered the shear test as the most adequate method to measure bond between the metal and ceramics [2,8,11,26,31,32]. However other authors [10,12,17,20,33,34] suggest the threepoint-flexure test, four-point-flexure test [28] or biaxial flexure test [1]. The shear test used was highly reliable, because it is based on minimal experimental variables and creates less residual stress at metal-ceramic interface, where the oblique forces are also minimized.…”

Section: Discussionmentioning

confidence: 99%

“…However, specimen size practiced was in accordance with the ISO recommended for metal-resin adhesion [44]. Furthermore, in the studies where flexural strength was used [28,33], specimen width was set to 3 mm. Therefore cross-section area of our specimens were comparable with those studies.…”

Section: Discussionmentioning

confidence: 99%

“…Kimura et al [7] stated that the formation of a metallic oxide layer on cpTi does not adhere to the substrate and thus fracture is regarded as adhesive between the metal or metallic oxide layer and the ceramic. Even though aggressive testing conditions were not considered, the absence or small amounts of residual ceramic on cpTi have also been monitored in previous studies [7,19,33].…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of interface characterization and adhesion of glass ceramics to commercially pure titanium and gold alloy after thermal- and mechanical-loading

Vásquez¹,

Özcan²,

Kimpara³

2009

Dental Materials

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of interface characterization and adhesion of glass ceramics to commercially pure titanium and gold alloy after thermal- and mechanical-loading

Vásquez¹,

Özcan²,

Kimpara³

2009

Dental Materials

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“…For clinical success of metal-ceramic restorations, the development of an optimal bond between ceramic and metal substructure is essential (1,(5)(6)(7). The chemical compatibility between metal and ceramic allows the restoration to resist thermal stress and mechanical forces, including firing temperature of the ceramic that does not cause distortion of the metal substructure and ceramic contraction that can be resisted by the metal (9).…”

Section: Effect Of Casting Atmosphere On the Shear Bond Strength Of Amentioning

confidence: 99%

“…The increase of gold price in the 1970s resulted in the development of alternative metallic systems (1). Base metal alloys were developed with nickel, chromium and cobalt, and semi-noble alloys, which include Ag-Pd alloys and all alloys with 10% to 75% of gold in their formulation.…”

Section: Introductionmentioning

confidence: 99%

Effect of casting atmosphere on the shear bond strength of a ceramic to Ni-Cr and Ni-Cr-Be alloys

et al. 2009

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The success of metal-ceramic restorations depends on an optimal bond between metal and ceramic. This study evaluated the effect of 3 casting atmospheres on the metal-ceramic bond strength (MCBS) of 2 Ni-Cr alloys, with beryllium (Fit Cast V) and without beryllium (Fit Cast SB). Sixty acrylic resin patterns (8 mm long and 5 mm diameter) were obtained using a fluorocarbon resin matrix. Wax was used to refine the surface of acrylic resin patterns that were invested and cast in an induction casting machine under normal, vacuum, and argon atmospheres at a temperature of 1340 o C. The castings were divested manually and airborne-particle abraded with 100-mm aluminum-oxide. Ten castings were obtained for each group. The IPS Classic V ceramic was applied (2 mm high and 5 mm diameter). The shear bond strength was tested in a mechanical testing machine with a crosshead speed of 2.0 mm/min. The MCBS data (MPa) were subjected to 2-way analysis of variance (a=0.05). There was no statistically significant difference (p>0.05) between the alloys or among the casting atmospheres. Within the limitations of this study, it may be concluded that the presence of beryllium and the casting atmosphere did not interfere in the MCBS of the evaluated metal-ceramic combinations

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The effect of surface treatments on the microroughness of laser‐sintered and vacuum‐cast base metal alloys for dental prosthetic frameworks

Castillo-Oyagüe¹,

Osorio²,

Osorio³

et al. 2012

Microscopy Res & Technique

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This study aimed to evaluate the effect of four chemomechanical surface treatments on the surface average microroughness and profile of laser-sintered and vacuum-cast dental prosthetic structures. Square-shaped blocks (10 mm × 10 mm × 1.5 mm) were prepared as follows: (1) laser-sintered CoCr (L) (ST2724G); (2) cast Co-Cr (C) (Gemium-cn); and (3) cast Ni-Cr-Ti (T) (Tilite). Specimens of each alloy group were randomly divided into five subgroups (n = 10 each), depending on the conditioning method used: (1) no treatment (control); (2) sandblasting (125 μm Al₂O₃-particles); (3) silica coating (50 μm silica-modified Al₂O₃-particles); (4) oxidation; and (5) oxidation plus opacification. Subgroups 2 and 3 represent "inner" pretreatments proposed for ceramometal restorations to improve the metal surface area available for luting cements. Subgroups 4 and 5 are the "outer" pretreatments required for bonding the aesthetic veneering ceramics to the underlying metal frameworks. Average surface roughness (Ra/μm) was determined using a surface profilometer. Data were analyzed by two-way ANOVA and Student-Newman-Keuls tests (α = 0.05). Metal surface topography was SEM-analyzed. Despite the inner pretreatment applied, L samples resulted in the highest microroughness (P < 0.001), whereas sandblasting produced a surface-smoothing effect in cast specimens. After oxidation, a significant increase in surface roughness occurred in all groups compared with controls, L specimens being the roughest (P < 0.001). Opacification caused a flattening effect of all oxidized structures; all opacified groups resulting in similar microroughness. Laser sintering of Co-Cr enhances the roughness of metal structures, which may improve the frameworks' microretention of the cements, and of the opaquer before the copings are veneered with the aesthetic ceramics.

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Shear bond strengths of a ceramic system to alternative metal alloys

Cited by 95 publications

References 16 publications

Evaluation of interface characterization and adhesion of glass ceramics to commercially pure titanium and gold alloy after thermal- and mechanical-loading

Evaluation of interface characterization and adhesion of glass ceramics to commercially pure titanium and gold alloy after thermal- and mechanical-loading

Effect of casting atmosphere on the shear bond strength of a ceramic to Ni-Cr and Ni-Cr-Be alloys

The effect of surface treatments on the microroughness of laser‐sintered and vacuum‐cast base metal alloys for dental prosthetic frameworks

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