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Fatigue failure load of an adhesively-cemented lithium disilicate glass-ceramic: Conventional ceramic etching vs etch & prime one-step primer.
Dent Mater. 2018 08; 34(8):1134-1143.DM

Abstract

OBJECTIVES

To evaluate the effect of different glass-ceramic surface treatments and aging on the fatigue failure load of a lithium disilicate glass-ceramic adhesively cemented to a dentin analogue material.

METHODS

One hundred and twenty (120) disc-shaped lithium disilicate specimens (Ø=10mm, thickness=1.5mm) were produced and randomly allocated (n=20) into 6 groups, considering 2 study factors: "surface treatment" in 3 levels (SIL-silane application only; HF5+SIL-5% hydrofluoric acid etching and silane application; ME&P-etching with an one-step ceramic primer), and "storage" in 2 levels (baseline-storage for 7 days; aging-storage for 90 days+12,000 thermal cycles). Ceramic discs were adhesively cemented to discs of a dentin analogue material (Ø=10mm, thickness=2.0mm) following the manufacturers' instructions. The fatigue failure load was determined by the staircase approach (250,000 cycles; 20Hz; initial load=1050N [∼70% of mean load-to-failure]; step size=52.5N [5% of initial load]). Micro-morphologic, fractographic, and atomic force microscope analysis were also performed. Fatigue failure load data were evaluated by one-way ANOVA, Bonferroni and t-tests for independent samples.

RESULTS

HF5+SIL presented higher fatigue failure load in both conditions (baseline and aging); ME&P presented intermediary mean values, while the SIL group presented the worst performance. All groups had a statistically significant decrease in the fatigue performance after aging.

SIGNIFICANCE

Hydrofluoric acid followed by silane application showed the best fatigue performance for an adhesively-cemented lithium disilicate ceramic. Aging negatively influenced the fatigue performance for all tested groups.

Authors+Show Affiliations

MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: maitemunhozscherer@hotmail.com.MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: catinaprochnow@hotmail.com.MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: andressa.venturini@hotmail.com.MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil; MSciD Graduate Program, School of Dentistry, Meridional Faculty-IMED, Senador Pinheiro Street, 304, Vila Rodrigues, 99070220, Passo Fundo, Rio Grande do Sul State, Brazil. Electronic address: gabrielkrpereira@hotmail.com.Department of Physics, Federal University of Santa Maria (UFSM), Roraima Avenue, 1000, Camobi, 97105900, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: burgounicamp@gmail.com.MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: mariliarippe@mail.ufsm.br.MSciD and PhD Post-Graduate Program in Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM), Marechal Floriano Peixoto Street, 1184, Centro, 97015372, Santa Maria, Rio Grande do Sul State, Brazil. Electronic address: lfvalandro@hotmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29789162

Citation

Scherer, Maitê Munhoz, et al. "Fatigue Failure Load of an Adhesively-cemented Lithium Disilicate Glass-ceramic: Conventional Ceramic Etching Vs Etch & Prime One-step Primer." Dental Materials : Official Publication of the Academy of Dental Materials, vol. 34, no. 8, 2018, pp. 1134-1143.
Scherer MM, Prochnow C, Venturini AB, et al. Fatigue failure load of an adhesively-cemented lithium disilicate glass-ceramic: Conventional ceramic etching vs etch & prime one-step primer. Dent Mater. 2018;34(8):1134-1143.
Scherer, M. M., Prochnow, C., Venturini, A. B., Pereira, G. K. R., Burgo, T. A. L., Rippe, M. P., & Valandro, L. F. (2018). Fatigue failure load of an adhesively-cemented lithium disilicate glass-ceramic: Conventional ceramic etching vs etch & prime one-step primer. Dental Materials : Official Publication of the Academy of Dental Materials, 34(8), 1134-1143. https://doi.org/10.1016/j.dental.2018.04.012
Scherer MM, et al. Fatigue Failure Load of an Adhesively-cemented Lithium Disilicate Glass-ceramic: Conventional Ceramic Etching Vs Etch & Prime One-step Primer. Dent Mater. 2018;34(8):1134-1143. PubMed PMID: 29789162.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fatigue failure load of an adhesively-cemented lithium disilicate glass-ceramic: Conventional ceramic etching vs etch & prime one-step primer. AU - Scherer,Maitê Munhoz, AU - Prochnow,Catina, AU - Venturini,Andressa Borin, AU - Pereira,Gabriel Kalil Rocha, AU - Burgo,Thiago Augusto de Lima, AU - Rippe,Marília Pivetta, AU - Valandro,Luiz Felipe, Y1 - 2018/05/19/ PY - 2018/02/07/received PY - 2018/04/13/revised PY - 2018/04/30/accepted PY - 2018/5/24/pubmed PY - 2019/1/31/medline PY - 2018/5/24/entrez KW - CAD/CAM restorations KW - Fatigue test KW - Glass ceramic KW - Mechanical behavior KW - Monolithic restorations KW - Topographical changes SP - 1134 EP - 1143 JF - Dental materials : official publication of the Academy of Dental Materials JO - Dent Mater VL - 34 IS - 8 N2 - OBJECTIVES: To evaluate the effect of different glass-ceramic surface treatments and aging on the fatigue failure load of a lithium disilicate glass-ceramic adhesively cemented to a dentin analogue material. METHODS: One hundred and twenty (120) disc-shaped lithium disilicate specimens (Ø=10mm, thickness=1.5mm) were produced and randomly allocated (n=20) into 6 groups, considering 2 study factors: "surface treatment" in 3 levels (SIL-silane application only; HF5+SIL-5% hydrofluoric acid etching and silane application; ME&P-etching with an one-step ceramic primer), and "storage" in 2 levels (baseline-storage for 7 days; aging-storage for 90 days+12,000 thermal cycles). Ceramic discs were adhesively cemented to discs of a dentin analogue material (Ø=10mm, thickness=2.0mm) following the manufacturers' instructions. The fatigue failure load was determined by the staircase approach (250,000 cycles; 20Hz; initial load=1050N [∼70% of mean load-to-failure]; step size=52.5N [5% of initial load]). Micro-morphologic, fractographic, and atomic force microscope analysis were also performed. Fatigue failure load data were evaluated by one-way ANOVA, Bonferroni and t-tests for independent samples. RESULTS: HF5+SIL presented higher fatigue failure load in both conditions (baseline and aging); ME&P presented intermediary mean values, while the SIL group presented the worst performance. All groups had a statistically significant decrease in the fatigue performance after aging. SIGNIFICANCE: Hydrofluoric acid followed by silane application showed the best fatigue performance for an adhesively-cemented lithium disilicate ceramic. Aging negatively influenced the fatigue performance for all tested groups. SN - 1879-0097 UR - https://www.unboundmedicine.com/medline/citation/29789162/Fatigue_failure_load_of_an_adhesively_cemented_lithium_disilicate_glass_ceramic:_Conventional_ceramic_etching_vs_etch_&_prime_one_step_primer_ DB - PRIME DP - Unbound Medicine ER -