Strengthening ceramic surfaces with the use of resin cements based on thiourethane oligomers

Lourenco Correr-Sobrinho; Ana R. Costa; Ana P. Fugolin; Lincoln P.S. Borges; Jack L. Ferracane; Carmem S. Pfeifer

doi:10.1002/app.49040

Strengthening ceramic surfaces with the use of resin cements based on thiourethane oligomers

Lourenco Correr-Sobrinho, Ana R. Costa, Ana P. Fugolin, Lincoln P.S. Borges, Jack L. Ferracane, Carmem S. Pfeifer

School of Dentistry

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This study evaluated the effects of thiourethane (TU) additives on the flexural strength (σ_f) and elastic modulus (E_f) of a resin cement, and on a possible strengthening of ceramic restorations. Methods: Two TUs (ARomatic and ALiphatic) were added at 0 (control—EC) or 20 wt% to photopolymerizable resin cements. RelyX Ultimate (RU) was the commercial control. Flexural strength (σ_f) and elastic modulus (E_f) of the cements were measured in three-point bending (n = 8). Biaxial flexural strength (σ_bf) of ceramic discs with and without cement layering were determined using a ball-on-ring setup. The σ_bf of cement-coated specimens was calculated at positions z = 0 (ceramic surface, bonded interface) and z = −t₂ (cement surface above ring). Data were analyzed with one-way ANOVA/Tukey test (α =.05). Results: σf of AR was significantly higher than for AL and RU, and E_f was lower. The E_f of RU was significantly higher than all other groups. At z = 0, all resin-coated groups had higher σ_bf. The σ_bf of RU, AR, and AL were significantly higher than EC and unfilled resin group. At z = −t₂, RU had significantly higher σ_bf. Significance: All resin cements were able to strengthen the ceramic, with the TU-modified material presenting similar results to the commercial material.

Original language	English (US)
Article number	49040
Journal	Journal of Applied Polymer Science
Volume	137
Issue number	35
DOIs	https://doi.org/10.1002/app.49040
State	Published - Sep 15 2020

Keywords

adhesives
coatings
mechanical Properties

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.49040

Cite this

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title = "Strengthening ceramic surfaces with the use of resin cements based on thiourethane oligomers",

abstract = "This study evaluated the effects of thiourethane (TU) additives on the flexural strength (σf) and elastic modulus (Ef) of a resin cement, and on a possible strengthening of ceramic restorations. Methods: Two TUs (ARomatic and ALiphatic) were added at 0 (control—EC) or 20 wt% to photopolymerizable resin cements. RelyX Ultimate (RU) was the commercial control. Flexural strength (σf) and elastic modulus (Ef) of the cements were measured in three-point bending (n = 8). Biaxial flexural strength (σbf) of ceramic discs with and without cement layering were determined using a ball-on-ring setup. The σbf of cement-coated specimens was calculated at positions z = 0 (ceramic surface, bonded interface) and z = −t2 (cement surface above ring). Data were analyzed with one-way ANOVA/Tukey test (α =.05). Results: σf of AR was significantly higher than for AL and RU, and Ef was lower. The Ef of RU was significantly higher than all other groups. At z = 0, all resin-coated groups had higher σbf. The σbf of RU, AR, and AL were significantly higher than EC and unfilled resin group. At z = −t2, RU had significantly higher σbf. Significance: All resin cements were able to strengthen the ceramic, with the TU-modified material presenting similar results to the commercial material.",

keywords = "adhesives, coatings, mechanical Properties",

author = "Lourenco Correr-Sobrinho and Costa, {Ana R.} and Fugolin, {Ana P.} and Borges, {Lincoln P.S.} and Ferracane, {Jack L.} and Pfeifer, {Carmem S.}",

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AU - Correr-Sobrinho, Lourenco

AU - Costa, Ana R.

AU - Fugolin, Ana P.

AU - Borges, Lincoln P.S.

AU - Ferracane, Jack L.

AU - Pfeifer, Carmem S.

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AB - This study evaluated the effects of thiourethane (TU) additives on the flexural strength (σf) and elastic modulus (Ef) of a resin cement, and on a possible strengthening of ceramic restorations. Methods: Two TUs (ARomatic and ALiphatic) were added at 0 (control—EC) or 20 wt% to photopolymerizable resin cements. RelyX Ultimate (RU) was the commercial control. Flexural strength (σf) and elastic modulus (Ef) of the cements were measured in three-point bending (n = 8). Biaxial flexural strength (σbf) of ceramic discs with and without cement layering were determined using a ball-on-ring setup. The σbf of cement-coated specimens was calculated at positions z = 0 (ceramic surface, bonded interface) and z = −t2 (cement surface above ring). Data were analyzed with one-way ANOVA/Tukey test (α =.05). Results: σf of AR was significantly higher than for AL and RU, and Ef was lower. The Ef of RU was significantly higher than all other groups. At z = 0, all resin-coated groups had higher σbf. The σbf of RU, AR, and AL were significantly higher than EC and unfilled resin group. At z = −t2, RU had significantly higher σbf. Significance: All resin cements were able to strengthen the ceramic, with the TU-modified material presenting similar results to the commercial material.

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Strengthening ceramic surfaces with the use of resin cements based on thiourethane oligomers

Abstract

Keywords

ASJC Scopus subject areas

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