Evaluation of bond strength of resin cements using different general-purpose statistical software packages for two-parameter Weibull statistics

Roos, Małgorzata; Stawarczyk, Bogna

doi:10.1016/j.dental.2012.04.013

Cited by 21 publications

(13 citation statements)

References 32 publications

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“…Load at debonding was recorded and shear bond strength σ was calculated using the load at failure F (N) and the adhesive area A (mm 2 ): σ = F/A. College, PA, USA) [12].…”

Section: Specimens Preparationmentioning

confidence: 99%

Repairability of CAD/CAM high-density PMMA- and composite-based polymers

et al. 2015

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OBJECTIVE The study aimed to analyse the shear bond strength of computer-aided design and computer-aided manufacturing (CAD/CAM) polymethyl methacrylate (PMMA)-and compositebased polymer materials repaired with a conventional methacrylate-based composite after different surface pretreatments. METHODS Each 48 specimens was prepared from six different CAD/CAM polymer materials (Ambarino high-class, artBloc Temp, CAD-Temp, Lava Ultimate, Telio CAD, Everest C-Temp) and a conventional dimethacrylate-based composite (Filtek Supreme XTE, control) and aged by thermal cycling (5000 cycles, 5-55°C). The surfaces were left untreated or were pretreated by mechanical roughening, aluminium oxide air abrasion or silica coating/silanization (each subgroup n = 12). The surfaces were further conditioned with an etchrinse adhesive (OptiBond FL) before the repair composite (Filtek Supreme XTE) was adhered to the surface. After further thermal cycling, shear bond strength was tested, and failure modes were assessed. Shear bond strength was statistically analysed by twoand one-way ANOVAs and Weibull statistics, failure mode by chi(2) test (p 0.05). RESULTS Shear bond strength was highest for silica coating/silanization > aluminium oxide air abrasion = mechanical roughening > no surface pretreatment. Independently of the repair pretreatment, highest bond strength values were observed in the control group and for the composite-based Everest C-Temp and Ambarino high-class, while PMMA-based materials (artBloc Temp, CAD-Temp and Telio CAD) presented significantly lowest values. For all materials, repair without any surface pretreatment resulted in adhesive failures only, which mostly were reduced when surface pretreatment was performed. CONCLUSIONS Repair of CAD/CAM high-density polymers requires surface pretreatment prior to adhesive and composite application. However, four out of six of the tested CAD/CAM materials did not achieve the repair bond strength of a conventional dimethacrylate-based composite. CLINICAL RELEVANCE Repair of PMMA-and composite-based polymers can be achieved by surface pretreatment followed by application of an adhesive and a conventional methacrylate-based composite. Conclusions: Repair of CAD/CAM high-density polymers requires surface pretreatment prior to adhesive and composite application. However, four out of six of the tested CAD/CAM materials did not achieve the repair bond strength of a conventional dimethacrylate-based composite.Clinical Relevance: Repair of PMMA-and composite-based polymers can be achieved by surface pretreatment followed by application of an adhesive and a conventional methacrylate-based composite.2

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“…Load at debonding was recorded and shear bond strength σ was calculated using the load at failure F (N) and the adhesive area A (mm 2 ): σ = F/A. College, PA, USA) [12].…”

Section: Specimens Preparationmentioning

confidence: 99%

Repairability of CAD/CAM high-density PMMA- and composite-based polymers

et al. 2015

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“…SPSS Version 20.0 (SPSS INC, Chicago, IL, USA) was used for the normal distribution. The Weibull distribution was performed using MINITAB Version 14.0 (MINITAB, State College, PA, USA) 19) . The results of the statistical analysis with p-values smaller than 0.05 were considered to be statistically significant.…”

Section: Methodsmentioning

confidence: 99%

Influence of abutment model materials on the fracture loads of three-unit fixed dental prostheses

et al. 2014

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This study evaluated and compared the influence of different supporting abutment models on the fracture loads of three-unit fixed dental prostheses (FDPs) fabricated from the following materials (n=24/material): (i) IPS e.max CAD-on, (ii) IPS e.max ZirCAD, and (iii) Telio CAD. Twelve FDPs of each group were adhesively cemented on a polymeric model and on a base metal alloy one. For the fracture load test the FDPs were loaded at the centre of the pontic (1 mm/min). The data were analyzed using descriptive statistics, two-and one-way ANOVA followed by post-hoc Scheffé test and Weibull statistics. Fracture loads were found to be affected by the choice of materials used for the abutment models. The fracture load for zirconia FDPs cemented on metal abutments was higher than on polymeric abutment group. In contrast, Telio CAD cemented on polymeric abutments presented higher fracture loads than group on base metal alloy support.

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“…Two-parameter Weibull statistics were estimated by Maximum Likelihood and their 95% CI were computed. Tests for the equality of the Weibull modulus and the equality of the characteristic fracture load were conducted together with the appropriate Bartletts modified post-hoc test 24) . Relative frequencies of failure types together with the corresponding 95% CI estimated according to the Ciba Geigy tables 25) , were provided.…”

Section: Statistical Analysesmentioning

confidence: 99%

Tensile bond strength of veneering resins to PEEK: Impact of different adhesives

et al. 2013

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This study tested tensile bond strength (TBS) between veneering resins and polyetheretherketone (PEEK) after pre-treatment with adhesive systems. Five-hundred-seventy-six PEEK disks were fabricated, air-abraded and divided into six pre-treatment groups (n=96/ group): Z-Prime Plus, Ambarino P60, Monobond Plus, Visio.link, Signum PEEK Bond, and control group without pre-treatment. Each group was divided into three subgroups of different veneering resins (n=32): Sinfony, GC Gradia and VITA VM LC. After specimen preparation with a bond area of 6.6 mm 2 , half of each subgroup (n=16) was tested initially, and the other half was thermo-cycled. TBS measurements were analysed by three-way and one-way ANOVA, t-test and Weibull statistics. Groups without pre-treatment and groups pre-treated by Z-Prime Plus and Ambarino P60 showed no TBS. Pre-treatment with Monobond Plus increased the TBS values. The highest TBS before and after thermo-cycling between PEEK and all tested veneering resins was observed for groups pre-treated with Visio.link and Signum PEEK Bond.

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Evaluation of bond strength of resin cements using different general-purpose statistical software packages for two-parameter Weibull statistics

Cited by 21 publications

References 32 publications

Repairability of CAD/CAM high-density PMMA- and composite-based polymers

Repairability of CAD/CAM high-density PMMA- and composite-based polymers

Influence of abutment model materials on the fracture loads of three-unit fixed dental prostheses

Tensile bond strength of veneering resins to PEEK: Impact of different adhesives

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