Are ceramic implant-supported single crowns  clinically better than metal-ceramic implant-supported single crowns?

Abstract The purpose of this study was to assess the influence of sealing of the screw access hole (SAH) on the fracture resistance of metal-ceramic implant-supported restorations. UCLA abutments were used to make 30 implant-retained mandibular molar restorations and divide equally into three groups: Group SRS: screw-retained restorations with SAH sealed; Group SRNS: screw-retained restorations with SAH not sealed; Group CR: cement-retained restorations. The following protocol was adopted to restore the SAH: the ceramic surface of the SAH was air-abraded with aluminum oxide; etched with 10% hydrofluoric acid; a silane coupling agent and a bonding agent were applied; cotton pellets were used as filling material and P-60 resin composite as restoring material. The cement-retained restorations were cemented with Rely-X U100. A metal rod with a spherical tip of 6.0 mm diameter was used to apply a vertical static load, simultaneously on the buccal and lingual incline cusps, at a crosshead speed of 0.5 mm/min until the fracture of the specimens. Data were analyzed using one-way ANOVA and Dunnet test (p<0.05) for multiples comparisons. The mode of failure was evaluated by a scanning electron microscopy (SEM). No significant difference between screw-retained restorations was found. The highest mean fracture resistance values were observed with CR group. Therefore, it was shown that SAH sealing did not influence the fracture resistance of the screw-retained restorations.

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Changes in the outcome of metal-ceramic tooth-supported single crowns and FDPs following the introduction of osseointegrated implant dentistry into a prosthodontic practice

Journal of Prosthetic Dentistry ◽

10.1016/s0022-3913(10)60030-3 ◽

2010 ◽

Vol 103 (3) ◽

pp. 191

Keyword(s):

Osseointegrated Implant ◽

Metal Ceramic ◽

Implant Dentistry ◽

Single Crowns

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Difference Between Selected and Obtained Shade for Metal-ceramic Crown Systems

Operative Dentistry ◽

10.2341/07-129 ◽

2008 ◽

Vol 33 (5) ◽

pp. 502-507 ◽

Cited By ~ 3

Author(s):

H. Omar ◽

O. Atta ◽

O. El-Mowafy

Keyword(s):

Clinical Relevance ◽

Metal Ceramic ◽

Shade Matching ◽

Ceramic Crown ◽

Cerec 3D ◽

Better Than

Clinical Relevance Veneered electroformed crowns and In-Ceram alumina crowns made with CEREC 3D produced shade-matching that was significantly better than that obtained with conventional porcelain-fused-to-metal crowns.

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A systematic review and meta‐analysis evaluating the survival, the failure, and the complication rates of veneered and monolithic all‐ceramic implant‐supported single crowns

Clinical Oral Implants Research ◽

10.1111/clr.13863 ◽

2021 ◽

Vol 32 (S21) ◽

pp. 254-288

Author(s):

Bjarni Elvar Pjetursson ◽

Irena Sailer ◽

Andrey Latyshev ◽

Kerstin Rabel ◽

Ralf‐Joachim Kohal ◽

...

Keyword(s):

Systematic Review ◽

Meta Analysis ◽

Complication Rates ◽

All Ceramic ◽

Single Crowns ◽

Ceramic Implant

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Effect of Sintering Aids Sorts on Properties of Prepared Al2O3-Al Cermet

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.281.297 ◽

2018 ◽

Vol 281 ◽

pp. 297-302 ◽

Cited By ~ 1

Author(s):

Rui Hua Wang ◽

Xiao Bo Bai ◽

Xiao Dong Jiang ◽

Deng Liang Yi ◽

Fang Wang ◽

...

Keyword(s):

Powder Metallurgy ◽

Bonding Strength ◽

Sintered Density ◽

Surface Hardness ◽

Ceramic Materials ◽

Alumina Powder ◽

Powder Metallurgy Method ◽

Sintering Aids ◽

Metal Ceramic ◽

Better Than

Cermet while maintaining the excellent properties of ceramic materials, but also have the advantages of a metal material, is an important new engineering materials. In this paper, Al-Al2O3 cermet is prepared adding different sintering aids via the powder metallurgy method to study the properties of Al-Al2O3 cermet. The conclusions are shown the adding sintering aids can significantly improve the sintered density of Al-Al2O3 cermet. The sintering aiding effect of adding MgO is better than that of SiO2 and Y2O3, and the hardness and the strength of the sample are higher than those of samples with SiO2 and Y2O3, and the densification degree of Al-Al2O3 metal ceramic material is the best, the relative density is 94.8%, the surface hardness is 824HV. The flatness of the surface of the sample adding MgO shows that the bonding strength between aluminum powder and alumina powder is high. The prepared Al-Al2O3 cermet adding different sintering aids have higher density and fewer pores in the microstructure the prepared Al-Al2O3 cermet adding sintering aids has a package structure.

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