Fracture of a Y-TZP ceramic femoral head

Maccauro, Giulio; Piconi, C.; Bürger, Wolfgang; Pilloni, L.; Santis, E.P.L. De; Muratori, Francesco; Learmonth, Ian D.

doi:10.1302/0301-620x.86b8.15012

Cited by 69 publications

(45 citation statements)

References 11 publications

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“…SEM analysis of the particles showed the wide difference in the grain size of ceramic precursors particles simulating the clinical condition in case of fracture in which ceramic fragments differs widely In dimension and shape (4,9). Histologic reaction to the periprosthetic tissue membrane reveals a different reaction depending on the grain size.…”

Section: Discussionmentioning

confidence: 98%

“…These studies showed the absence of long-term chronic effects and tumor development (2,3). Moreover in some particular cases ceramic materials may induce an acute reaction to ceramic debris, especially in case offracture (4). The aim ofthis study was to investigate the possible local and systemic acute effects of ceramic precursors in form of powders of different size when released into articular joint.…”

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confidence: 99%

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Zirconia Toughened Alumina (ZTA) Powders: Ultrastructural and Histological Analysis

Spinelli¹,

Maccauro²,

Graci³

et al. 2011

Int J Immunopathol Pharmacol

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Ceramic materials, as Alumina and Zirconia, has made an improvement in the choice of new biomaterials for the load bearing application in dental and orthopaedic implants. These materials has shown mechanical resistance to high stress related to weight bearing and low debris in time. For this reason they are indicated on young patients implant, with high demanding activities and long life expectance. In literature however the risk of chronic inflammation due to chronic wear debris release and the possibility of carcinogenesis, is still to be definitively investigated. Another point to investigate is the acute reaction of the tissue in case of acute release of powders of these materials. The aim of this study was to investigate the possible local and systemic acute effects of ceramic precursors in form of powders of different size when released into articular joint. Powders of ZTA were implanted in the knee joint of twenty-four New Zealand white adult rabbits, that were sacrificed at 1,3,6, and 12 months. Radiographic, histological and immunoistochemestry analysis were conducted on periprosthetic tissue and peripheral organs, to verifying local host response and systemic toxic effects.

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Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 99%

Zirconia Toughened Alumina (ZTA) Powders: Ultrastructural and Histological Analysis

Spinelli¹,

Maccauro²,

Graci³

et al. 2011

Int J Immunopathol Pharmacol

Self Cite

View full text Add to dashboard Cite

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“…However, Maccauro et al reported on damages to the zirconia femoral heads, which were speculated to be from low-temperature degradation due to an increased monoclinic content 36) . Zirconia restorations have been used prevalently in the intraoral region, but serious issues have not been reported that raise the suspicion of low-temperature degradation.…”

Section: Discussionmentioning

confidence: 99%

Zirconia Implants with Laser Surface Treatment: Peri-Implant Bone Response and Enhancement of Osseointegration

Yasuno

Kakura

Taniguchi

et al. 2014

J. Hard Tissue Biology.

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The aim of this study was to prepare zirconia implants with laser-modified surfaces and to evaluate peri-implant tissue response and osseointegration in an animal study. The experimental zirconia implants received one of the following surface treatments and were placed in the tibiae of SD rats: vertical irradiation with a fiber laser (vertical fiber laser), horizontal irradiation with a fiber laser (horizontal fiber laser), vertical irradiation with a Neodymium-doped yttrium orthovanadate (YVO4) laser (vertical YVO4 laser), and horizontal irradiation with a YVO4 laser (horizontal YVO4 laser). The control implants were smooth surfaced. Tibiae with implant bodies were collected 28 days after implant placement, and removal torque values were measured. Tissue sections were prepared for light microscopy, and the bone-implant contact (BIC) ratio and the peri-implant bone area (BA) were measured. The vertical fiber-laser implants had a mean BIC that was significantly higher than other implants. The mean BIC of the vertical fiber-laser implants was approximately 4.2 folds of the value of the control implants on the cortical bone side and approximately 2.7 folds of the value of the control implants on the bone marrow side. The mean BA was significantly higher in the vertical YVO4-laser implants. The vertical fiber-laser implants had a mean torque removal value that was approximately 2.4 folds of the value of the control implants and approximately double of the value of the vertical or horizontal YVO4-laser implants. The horizontal fiber-laser implants had a mean removal torque value that was approximately double of the value of the control implants and approximately 1.7 folds of the value of the vertical or horizontal YVO4-laser implants (p<0.05). Both types of lasers were useful in implant surface treatment to enhance osseointegration of zirconia implants.

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“…Among these, the staircase method automatically concentrates testing near the mean and requires fewer tests 26,27) . Hot isostatic pressing was introduced to achieve very high density and enhance the reliability of ceramic components 13,28) . In our preliminary test, HIPed Y-TZP showed very high strength (biaxial flexural strength: approximately 1,800 MPa) compared with Y-TZP fabricated by the normal sintering method in air (biaxial flexural strength: approximately 900 MPa).…”

Section: Discussionmentioning

confidence: 99%

Cyclic fatigue resistance of yttria-stabilized tetragonal zirconia polycrystals with hot isostatic press processing

2012

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This study investigated the influence of surface roughness and cyclic loading on fatigue resistance in Y-TZP subjected to hot isostatic pressing (HIP). Fifty Y-TZP cylinders 3.0 mm in diameter were divided into Group A (polished by centerless method; TZP-CP) or Group B (blasted and acid-etched: TZP-SB150E). Twenty five cp-titanium cylinders (Ti-SB150E) were used as a control. Static and cyclic tests were carried out according to ISO 14801. The cyclic fatigue test was performed in distilled water at 37°C. Surface morphology and roughness as well as crystal phase on the surfaces were also evaluated. Fracture force under the static test was 1,765N (TZP-CP), 1,220N (TZP-SB150E), and 850 N (yield force, Ti-SB150E). Fracture values under the cyclic test decreased to approximately 70% of those under the static tests. These results indicate that HIPed Y-TZP with a 3.0-mm diameter has sufficient durability for application to dental implants.

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Fracture of a Y-TZP ceramic femoral head

Cited by 69 publications

References 11 publications

Zirconia Toughened Alumina (ZTA) Powders: Ultrastructural and Histological Analysis

Zirconia Toughened Alumina (ZTA) Powders: Ultrastructural and Histological Analysis

Zirconia Implants with Laser Surface Treatment: Peri-Implant Bone Response and Enhancement of Osseointegration

Cyclic fatigue resistance of yttria-stabilized tetragonal zirconia polycrystals with hot isostatic press processing

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