Effect of different investments and mold temperatures on titanium mechanical properties

Rodrigues, Rossana Lott; Almeida, Elanio Pereira de; Faria, Adriana Cláudia Lapria; Macedo, Ana Paula; Mattos, Maria da Glória Chiarello de; Ribeiro, Ricardo Faria

doi:10.1016/j.jpor.2011.01.002

Cited by 17 publications

(5 citation statements)

References 20 publications

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“…Simultaneously, it stretched nearly 40% more than the Ti–6Al–4V combination ( Pieralini et al., 2010 ). The Ti–6Al–7Nb amalgam consumption resistance was investigated using long-distance inundation and anodic polarisation techniques, and it was discovered that this composite would be preferable to the Ti–6Al–4V compound, which was comparable to Ti in terms of erosion resistance ( Rodrigues et al., 2012 ). With fewer casting imperfections than a one-chamber vacuum projecting framework designed for Ti, the liquid Ti–6Al–7Nb mixture progressed almost identically to pure Ti and better than cobalt-chromium amalgam ( Srimaneepong et al., 2005 ; Wang et al., 1999 ).…”

Section: Manufacturing Of Ti and Ti Alloy Dental Implantsmentioning

confidence: 99%

RETRACTED: Titanium and titanium alloys in dentistry: Current trends, recent developments, and future prospects

Hoque¹,

Showva²,

Ahmed³

et al. 2022

Heliyon

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Section: Manufacturing Of Ti and Ti Alloy Dental Implantsmentioning

confidence: 99%

RETRACTED: Titanium and titanium alloys in dentistry: Current trends, recent developments, and future prospects

Hoque¹,

Showva²,

Ahmed³

et al. 2022

Heliyon

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“…The surface TiO 2 layer shields the alloy to corrode (6). However, some disadvantages of Ti casting (CST) such as a strong tendency to oxidize and increased chemical reactivity at high temperatures, limit its use (7,8). Porosity and incomplete CST, especially in the margins of the restoration, can also occur (7).…”

Section: Introductionmentioning

confidence: 99%

Effects of surface treatment methods on shear bond strength of ceramic to cast, milled and laser-sintered titanium frameworks

Yeşil¹,

Ezmek²,

Sipahi³

2022

GMJ

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Aims: This study determined the effect of three different surface treatment methods [sandblasting (SB), tribochemical silica coating (TSC), and ytterbium fiber laser (YFL) roughening] on surface roughness and titanium-ceramic shear bond strength using specimens obtained using casting (CST), milling (ML) and selective laser melting (SLM). Methods:In this in vitro study, we obtained 32 cylindrical titanium specimens for each fabrication method and subjected them to each surface treatment method. Nine experiments (n=11) were conducted. One specimen was randomly selected from each group for scanning electron microscope analysis. Surface roughness was examined using a profilometer device (n=10). Ceramic was applied to titanium specimens. A universal testing machine was used to determine shear bond strength in megapascal (MPa).Results: Surface roughness of CST/YFL (1.254±0.058 µm), SLM/SB (1.294±0.054 µm), and SLM/ YFL (1.208±0.057 µm) groups were significantly higher than other groups (CST/SB, CST/TSC, ML/SB, ML/TSC, ML/YFL, and SLM/TSC, p<0.01). Shear bond strengths of CST/YFL (20.28±6.97 MPa), SLM/SB (21.9±8.06 MPa), and SLM/YFL (29.92±5.67 MPa) were significantly lower than other groups (p<0.01). Shear bond strength of the ML/SB group (42.40±7.52 MPa) was highest but there were no significant differences between ML/SB and CST/SB (33.04±7.62, p=0.101), CST/TSC (35.38±4.15, p=0.426), ML/TSC (40.03±6.42, p=0.998), ML/YFL (39.43±9.24, p=0.991) and SLM/TSC (37.05±7.84, p=0.766). Conclusions:This study showed that the production and surface treatment method impact shear bond strength. Excessive roughness affects the bonding strength. The highest shear bond strength was identified in the ML group.

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“…Titanium components of complex shapes are mainly manufactured by casting. Typically, the microstructure of metal components manufactured by casting consists of coarse grains [6][7][8]. Based on the Hall-Petch relation, which defines the relationship between grain size and mechanical strength, as the grain size decreases, the mechanical strength increases [9,10].…”

Section: Introductionmentioning

confidence: 99%

Improvement of mechanical properties of cast pure titanium by repeated heat treatment

Jung

Choi

Lee

et al. 2019

Materials Science and Technology

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Pure titanium components fabricated by casting have a coarse grain microstructure. To improve the mechanical strength of pure titanium components by refining the grain size, the cast samples were repeatedly heat-treated. During the heat treatment, the titanium samples were repeatedly heated above the alpha-to-beta ( α– β) transition temperature and cooled to room temperature to undergo phase transformation. The heating cycle was performed 1, 3, 5, and 7 times. As the number of heating cycles increased, the grain size decreased. The tensile strength was 267.9 MPa in the as-cast sample and improved to 343.4 MPa after 7 heat-treatment cycles owing to the grain size refinement, while the elongation was maintained during the heat treatment. This paper is part of a thematic issue on Titanium.

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Effect of different investments and mold temperatures on titanium mechanical properties

Abstract: Casting porosities found in the specimens cast using conventional investments (CAS) and lower mold temperatures would limit their use, even mechanical properties were similar than in specimens cast using specific to titanium investment (REM) at temperatures recommended by the manufacturer.

Cited by 17 publications

References 20 publications

RETRACTED: Titanium and titanium alloys in dentistry: Current trends, recent developments, and future prospects

RETRACTED: Titanium and titanium alloys in dentistry: Current trends, recent developments, and future prospects

Effects of surface treatment methods on shear bond strength of ceramic to cast, milled and laser-sintered titanium frameworks

Improvement of mechanical properties of cast pure titanium by repeated heat treatment

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