Comparison of Repair Methods for Ceramic‐Fused‐to‐Metal Crowns

Özcan, Mutlu; Sleen, Jeroen M. van der; Kurunmäki, Hemmo; Vallittu, Pekka K.

doi:10.1111/j.1532-849x.2006.00124.x

Cited by 47 publications

(38 citation statements)

References 21 publications

(23 reference statements)

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“…On this ground, thermocycling before fracture load testing was used as an aging method in this study. Previous research on veneer repairs has shown the beneficial effects of bidirectional FRC on interfacial strength and crack propagation [20][21][22] . The addition of fibers close to the preparation surface was expected to reinforce the weakened tooth structure and distribute stresses evenly, to the end of avoiding detrimental stress concentrations at the cervical and incisal sites 33) of the laminate veneer.…”

Section: Discussionmentioning

confidence: 99%

“…The further impregnation of the polymer-preimpregnated fibers with a light-curing resin matrix formed a semiinterpenetrating polymer network of relatively coarse structure. This structure was previously shown to boost the bonding strength 19,22) . After further impregnation, the FRC layer was applied to the prepared tooth surface.…”

Section: Cementationmentioning

confidence: 99%

“…Fiber-reinforced composites (FRCs), on the other hand, have been used to increase the mechanical properties of composite restorations without compromising the esthetic properties 18,19) . They have been shown to have the ability to withstand tensile stresses and stop crack propagation at the adhesive interfaces [20][21][22] . However, limited research has been done on the use of FRC in esthetic laminate veneers 23) .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Intermediate Fiber Layer on the Fracture Load and Failure Mode of Maxillary Incisors Restored with Laminate Veneers

et al. 2008

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This study evaluated the fracture load and failure mode of various veneer materials cemented with or without the addition of a fiber-reinforced composite (FRC) layer at the adhesive interface. Sixty intact incisors were randomly divided into three groups. Group 1 was fabricated with the heat-press technique (IPS Empress 2); Group 2 with the copy milling technique (ZirkonZahn); and Group 3 with the direct or indirect composite technique (Z250) -and specimens were cemented either with or without FRC at the adhesive interface. The specimens were thermocycled and tested with a universal testing machine. No significant differences in fracture load (p>0.05) were found among the various veneer materials. The addition of FRC at the adhesive layer did not lead to significant differences in the fracture load (p>0.05) but resulted in differences in the failure mode. Laminate veneers made of composite, zirconia, and Empress 2 showed comparable mean fracture loads. However, the use of FRC at the interface changed their failure modes.

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Section: Discussionmentioning

confidence: 99%

Section: Cementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Intermediate Fiber Layer on the Fracture Load and Failure Mode of Maxillary Incisors Restored with Laminate Veneers

et al. 2008

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“…A literatura também relata a utilização de métodos tais como jateamento com partículas de óxido de alumínio-Al 2 O 3 (SHAHVERDI et al, 1998;WOLF et al, 1992;KIM et al, 2005;YESIL et al, 2007), asperização com pontas diamantadas (Kupiec et al, 1996), aplicação de silano (AGRA et al, 1993, DELLA BONA;NORTHEAST, 1994) e deposição de uma camada de sílica (SiOx) (OZCAN et al, 2006) sobre a cerâmica fraturada.…”

Section: Discussionunclassified

Efeito De Diferentes Tratamentos Superficiais Na Resistencia De Uniao De Reparo De Porcelana Com Resina Composta

Almilhatti¹,

Neppelenbroek²,

Moura³

et al. 2008

Publ. Biologicas

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RESUMOEste estudo avaliou o efeito de diferentes tratamentos superfi ciais na resistência de união ao cisalhamento de uma cerâmica feldspática (Noritake EX-3), reparada com uma resina composta (Z-100). Quarenta corpos-de-prova da porcelana foram incluídos em resina acrílica, polidos (# 320, # 600) e divididos em 4 grupos (n=10) de acordo com os tratamentos superfi ciais: G1) sem tratamento (controle); G2) condicionamento com ácido fl uorídrico a 10% por 60s; G3) asperização com ponta diamantada; G4) jateamento com Al2O3 (50μm). Após o tratamento, o silano (RelyX ceramic primer) e o adesivo (Scotchbond Multi-Purpose) foram aplicados nas superfícies da porcelana antes da união a 2 mm de resina composta. Após 24 h de armazenamento em água destilada a 37ºC e 24h de termociclagem (1.000 ciclos, 4ºC/60ºC, 15 s cada), os corpos-de-prova foram submetidos ao teste de cisalhamento em máquina de ensaios universal, com velocidade de 0,5 mm/min. Os dados foram submetidos à análise de variância e ao teste de Tukey (α=0,05). Os tratamentos superfi ciais (G2=25,00±2,99 MPa; G3=22,48±4,54 MPa; G4=24,18±5,03 MPa) demonstraram signifi cativamente (P<0,05) maiores valores de resistência de união quando comparados ao controle (G1=11,57±2,06 MPa), mas não apresentaram diferenças signifi cativas (P>0,05) entre si. A microscopia óptica revelou aproximadamente 80% de falhas adesivas para o grupo controle e 65% de falhas coesivas da porcelana para os grupos submetidos aos tratamentos superfi ciais. Foi possível concluir que os tratamentos superfi ciais avaliados melhoraram signifi cativamente a resistência entre a cerâmica Noritake e a resina Z-100.

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“…On the repair of fractured porcelain veneers with resin composites, higher fracture loads were reported when a layer of glass fiber weave was placed between the crown and the repair resin composite 24,25) . In particular, in the study by Vallittu 24) , a fiber weave layer was expanded over the incisal edge of the crown, thus providing a reinforced mechanical interlocking of the resin composite to the metal crown.…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber-reinforced composites on the failure load and failure mode of composite veneers

et al. 2009

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This study compared the initial and final failure loads and failure modes of indirect resin composite laminate veneers with and without fiber reinforcement. Forty intact lower canines received standard laminate preparations and were randomly assigned into four test groups (n=10). In Group 1, indirect resin composite veneers were repaired with two layers of preimpregnated bidirectional glass fiber weave and a restorative composite; in Group 2, with a layer of preimpregnated unidirectional glass fibers and a restorative composite; and in Group 3, with an experimental semi-IPN matrix composed of multidirectional short glass fibers. Indirect resin composite veneers without any fiber reinforcement were used as control (Group 4). All specimens were thermocycled and tested with a universal testing machine. On the final failure load, there were no statistically significant differences (p>0.05) among the test groups. Within each group, pairwise comparison of initial and final failure loads revealed statistically significant differences (p<0.05), except for Group 4 (p>0.05). On failure mode, unreinforced specimens showed instantaneous failure, whereas reinforced specimens mostly demonstrated elongated failure.

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Comparison of Repair Methods for Ceramic‐Fused‐to‐Metal Crowns

Cited by 47 publications

References 21 publications

Effect of Intermediate Fiber Layer on the Fracture Load and Failure Mode of Maxillary Incisors Restored with Laminate Veneers

Effect of Intermediate Fiber Layer on the Fracture Load and Failure Mode of Maxillary Incisors Restored with Laminate Veneers

Efeito De Diferentes Tratamentos Superficiais Na Resistencia De Uniao De Reparo De Porcelana Com Resina Composta

Effect of fiber-reinforced composites on the failure load and failure mode of composite veneers

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