Evaluation of the bond strength of a low-fusing porcelain to cast Ti–24Nb–4Zr–7.9Sn alloy

Wu, Jianhua; Zhou, Jian; Zhao, Wen‐Sheng; Gao, Bo

doi:10.1016/j.msec.2012.08.020

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…Thus, this atom easily traverses the holes in the embedded material, reducing back pressure and eliminating the holes or defects of casting metals . However, the mechanical properties of casting metals using different gas atmospheres are generally inconsistent with the bonding strength of PFM because strength would be directly affected by the surface condition, oxidized layers, firing lenticular voids, and heat treatment during veneering porcelains . Therefore, a critical understanding of the mechanical properties of the different alloys used in practical processes is essential to ensure and simulate the maintenance and life of fixed partial dentures with veneering porcelains.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to Ar, He is a popular noble gas used in the casting of [27][28][29][30] Therefore, a critical understanding of the mechanical properties of the different alloys used in practical processes is essential to ensure and simulate the maintenance and life of fixed partial dentures with veneering porcelains. It is worth mentioning that the bonding of the oxide layer with PFM is very sensitive to the defects of the oxidation layers of cp Ti, that is, the sintering process using different firing atmospheres.…”

Section: Element Mapping Measurements On Fracture Cp Ti Surfacesmentioning

confidence: 99%

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Effect of different firing atmospheres on debonding strength of dental porcelain fused to commercially pure titanium

Wang

Lai

et al. 2019

The Kaohsiung J of Med Scie

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An in vitro investigation was performed to evaluate the bonding characteristics of porcelain fused to metal (PFM)/commercially pure titanium (cp Ti, grade II) in three firing atmospheres of under vacuum and using two noble gases argon (Ar) and helium (He). Three groups of porcelain veneers firing under vacuum, Ar, and He were prepared to evaluate the bonding of porcelain fused to the cold‐rolled cp Ti. The bond strength of PFM durability by a three‐point bending test, phases, microhardness of cp Ti after firing processes, and fractures were measured and evaluated. Results show the microhardness of cp Ti in group of porcelain firing under He atmosphere was significantly lower than that of the two other groups, which were in vacuum and Ar (P < .05). X‐ray diffraction showed the He group produced in relatively small amounts of TiO2 and TiO oxides than other groups but featured relatively high quantity of airhole defects in the porcelain body leading to the lowest bond strength. The Ar group presented the highest bond strength of comparing with the groups under vacuum and using He (P < .05). Although the firing processes in He could efficiently prevent the diffusion of oxygen into Ti, the porcelain‐cp Ti bond strength using Ar protective atmosphere presented the advantage to achieve clinical requirement because porcelain firing under He revealed prominent voids and defects within the body of porcelain.

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Section: Resultsmentioning

confidence: 99%

Section: Element Mapping Measurements On Fracture Cp Ti Surfacesmentioning

confidence: 99%

Effect of different firing atmospheres on debonding strength of dental porcelain fused to commercially pure titanium

Wang

Lai

et al. 2019

The Kaohsiung J of Med Scie

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“…The complete coverage and increased thickness of SrPO 4 coating on TNTZ as a result of increased processing time in SrPO 4 solution (Figure 1 a-j), gave rise to the accretion of the bonding strength. In fact, the bonding strength to the substrate, is defi ned as the reversible work created in the interface between two bonded substances, and it also can be defi ned as follows: [ 35 ] W ab a b ab γ γ γ = + −…”

Section: Physical and Chemical Characterization Of Srpo 4 Coatingmentioning

confidence: 99%

Osteoanabolic Implant Materials for Orthopedic Treatment

Ding

Nakai

et al. 2016

Adv Healthcare Materials

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Osteoporosis is becoming more prevalent due to the aging demographics of many populations. Osteoporotic bone is more prone to fracture than normal bone, and current orthopedic implant materials are not ideal for the osteoporotic cases. A newly developed strontium phosphate (SrPO4 ) coating is reported herein, and applied to Ti-29Nb-13Ta-4.6Zr (wt%), TNTZ, an implant material with a comparative Young's modulus to that of natural bone. The SrPO4 coating is anticipated to modulate the activity of osteoblast (OB) and osteoclast (OC) cells, in order to promote bone formation. TNTZ, a material with excellent biocompatibility and high bioinertness is pretreated in a concentrated alkaline solution under hydrothermal conditions, followed by a hydrothermal coating growth process to achieve complete SrPO4 surface coverage with high bonding strength. Owing to the release of Sr ions from the SrPO4 coating and its unique surface topography, OB cells demonstrate increased proliferation and differentiation, while the cellular responses of OC are suppressed, compared to the control case, i.e., bare TNTZ. This TNTZ implant with a near physiologic Young's modulus and a functional SrPO4 coating provides a new direction in the design and manufacture of implantable devices used in the management of orthopedic conditions in osteoporotic individuals.

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“…In dental prosthetics, many substrate materials are metal alloys, which highly affect the properties of the obtained metal-porcelain joint. Platinum, gold, silver-palladium, nickel-cobalt, and titanium alloys are mainly suitable [ 4 , 5 , 6 , 7 ]. However, non-precious alloys are characterized by low corrosion resistance, poor biocompatibility, insufficient bonding strength, or easily formed porcelain discolouration [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Sandblasting and Chemical Etching on Titanium 99.2–Dental Porcelain Bond Strength

et al. 2021

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The metal–ceramic interface requires proper surface preparation of both metal and ceramic substrates. This process is complicated by the differences in chemical bonds and physicochemical properties that characterise the two materials. However, adequate bond strength at the interface and phase composition of the titanium-bioceramics system is essential for the durability of dental implants and improving the substrates’ functional properties. In this paper, the authors present the results of a study determining the effect of mechanical and chemical surface treatment (sandblasting and etching) on the strength and quality of the titanium-low-fusing dental porcelain bond. To evaluate the strength of the metal-ceramic interface, the authors performed mechanical tests (three-point bending) according to EN ISO 9693 standard, microscopic observations (SEM-EDS), and Raman spectroscopy studies. The results showed that depending on the chemical etching medium used, different bond strength values and failure mechanisms of the metal-ceramic system were observed. The analyzed samples met the requirements of EN ISO 9693 for metal-ceramic systems and received strength values above 25 MPa. Higher joint strength was obtained for the samples after sandblasting and chemical etching compared to the samples subjected only to sandblasting.

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Evaluation of the bond strength of a low-fusing porcelain to cast Ti–24Nb–4Zr–7.9Sn alloy

Cited by 10 publications

References 27 publications

Effect of different firing atmospheres on debonding strength of dental porcelain fused to commercially pure titanium

Effect of different firing atmospheres on debonding strength of dental porcelain fused to commercially pure titanium

Osteoanabolic Implant Materials for Orthopedic Treatment

Influence of Sandblasting and Chemical Etching on Titanium 99.2–Dental Porcelain Bond Strength

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