Effects of cement-curing mode and light-curing unit on the bond durability of ceramic cemented to dentin

Passos, Sheila Pestana; Souza, Rodrigo Othávio de Assunção e; Michida, Silvia M. A.; Zamboni, Sandra Costa; Oliveira, Simone Aparecida de

doi:10.1590/s1806-83242013005000005

Cited by 4 publications

(6 citation statements)

References 24 publications

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“…An important aspect of our results is how low all the microtensile values were (2.2-9.7 MPa) when compared to those of other studies (10-30 MPa). 40,[58][59][60][61][62] In addition, it is important to emphasize that the standard deviation values (Table 4) were similar among all groups, suggesting that the results are reliable and that the experiment was well executed. These low values might be related to the polymerization shrinkage stress of the Rely X ARC, which has a negative influence on the bond strength to dentin, resulting in much lower bond strength values, even under ideal geometric situations.…”

Section: Discussionmentioning

confidence: 99%

Ceramic Inlays: Effect of Mechanical Cycling and Ceramic Type on Restoration-dentin Bond Strength

Trindade

Kleverlaan

Silva

et al. 2016

Operative Dentistry

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This study aimed to evaluate the bond strength between dentin and five different ceramic inlays in permanent maxillary premolars, with and without mechanical cycling. One hundred permanent maxillary premolars were prepared and divided into 10 groups (n=10) according to the ceramic system (IPS e.Max Press; IPS e.Max CAD; Vita PM9; Vita Mark II; and Vita VM7) and the mechanical cycling factor (with and without [100 N, 2 Hz, 1.2×10(6) cycles]). The inlays were adhesively cemented, and all of the specimens were cut into microbars (1×1 mm, nontrimming method), which were tested under microtensile loading. The failure mode was classified and contact angle, roughness, and microtopographic analyses were performed on each ceramic surface. The mechanical cycling had a significant effect (p=0.0087) on the bond strength between dentin and IPS e.max Press. The Vita Mark II group had the highest bond strength values under both conditions, with mechanical cycling (9.7±1.8 MPa) and without (8.2±1.9 MPa), while IPS e.Max CAD had the lowest values (2.6±1.6 and 2.2±1.4, respectively). The adhesive failure mode at the ceramic/cement interface was the most frequent. Vita Mark II showed the highest value of average roughness. IPS e.max Press and Vita Mark II ceramics presented the lowest contact angles. In conclusion, the composition and manufacturing process of ceramics seem to have an influence on the ceramic surface and resin cement bond strength. Mechanical cycling did not cause significant degradation on the dentin and ceramic bond strength under the configuration used.

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Section: Discussionmentioning

confidence: 99%

Ceramic Inlays: Effect of Mechanical Cycling and Ceramic Type on Restoration-dentin Bond Strength

Trindade

Kleverlaan

Silva

et al. 2016

Operative Dentistry

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“…Chair-side CAD/CAM applications offer many advantages to patients including elimination of laboratory processing costs and the need for temporization of the prepared tooth structure [1]. Durable adhesion between dental tissues and ceramics plays a crucial role in the success of restorations that do not have retentive properties [2][3][4][5][6]. When bonding ceramic restorations to dental substrates, it is crucial to ensure optimal adhesion of resin cement to both the dentin and ceramic surface [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

2014

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The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N = 80) were cut horizontally to expose sound dentin. The teeth were randomly divided into four groups (n = 20 per group) and dentin surfaces were conditioned according to one of the following methods: group C: no treatment (control group); group CH: 0.2 % chitosan; group E: 17 % ethylene diamine tetra acetic acid (EDTA) and group P: 25 % polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized. Specimens were stored in distilled water at 37°C for 24 h and thermocycled for 6,000 times. The beams were obtained from bonded ceramic-cement-tooth assemblies and were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P < 0.05). While cement type significantly affected the MTBS results (P < 0.05), no significant difference was observed between the dentin chelating agents (P = 0.785). Interaction terms were not significant (P = 0.114). Control group with no dentin conditioning presented significantly lower results with both cements (RelyX Unicem: 8.1 ± 1.9(a), Clearfil SA: 8 ± 1.6(a)) than those of conditioned groups (19.3 ± 4.2(b)-24.5 ± 5.2(b)) (P < 0.05). Failure types were predominantly adhesive in all groups. Chitosan (2 %), EDTA (17 %) or PAA (25 %) could all be used as dentin chelating agents in conjunction with self-adhesive resin cements tested. Abstract:The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N=80) were cut horizontally to expose sound dentin. The teeth were randomly divided into 4 groups (n=20 per group) and dentin surfaces were conditioned according to one of the following methods: Group C: No treatment (Control group); Group CH: 0.2% chitosan; Group E: 17% ethylene diamine tetra acetic acid (EDTA) and Group P: 25% polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized.Specimens were stored in distilled water at 37 o C for 24 hours and thermocycled for 6000 times.The beams were obtained from bonded ceramic-cement-tooth assemblies and they were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P<0.05). While cement type significantly affected the MTBS results (P<0.05), no significant difference was observed between the dentin chelating agents (...

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“…According to Özcan et al [22], resin materials absorb water during storage over time and a period of days or weeks are required to achieve maximum absorption. Previous studies evaluating the influence of water absorption on bond strength of resin cements to dentine also found that TC was a negative effect for the experimental conditions [9,10,47].…”

Section: Discussionmentioning

confidence: 90%

“…In the present study, the highest bond strength was found in all groups submitted to longer polymerization (V1 80s , V2 80s and V3 80s ), even after TC. Some studies have suggested longer polymerization [47] and high intensity light sources for cementation of thicker ceramic restorations [10] to manage the negative effect of ceramic thickness. This occurs because increasing the time of exposure to light promotes a higher degree of polymerization, and a higher conversion degree of dual resin cement monomers [47].…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, Passos et al (2012) evaluated the bond strength of a feldspathic ceramic cemented to dentine using different cements (lightand dual-cured) and light-curing methods (halogen and LED) under thermal aging. The authors concluded that the light-curing methods influenced bond strength when light-cured cement was used (LED > halogen) [10].…”

Section: Introductionmentioning

confidence: 99%

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Influence of ceramic thickness and light-curing time on the long-term µTBS of silica-based ceramic to human dentin

Barca

Moura

Costa

et al. 2017

Journal of Adhesion Science and Technology

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To evaluate the influence of ceramic thickness, light-curing time and thermal cycling (TC) on the μTBS of a glass ceramic cemented to human dentin. Ninety-six human molars were embedded in acrylic resin and the occlusal surface was sectioned to exposure dentin. Blocks of feldspathic ceramic (Vita PM9) with different thickness (6 × 6 × 1 mm/2 mm/3 mm) were fabricated with wax pattern and sprue. The blocks and teeth were randomly distributed into 12 groups (n = 8) according to the ceramic thickness (V1: 1 mm, V2: 2 mm and V3: 3 mm), light-curing time (40s; 80s), and TC (yes; no). Dentin was etched, washed and dried. The adhesive (Excite, Ivoclar) was applied onto the dentin surface and light-cured (20s), and the ceramic surface was etched with 10% HF, washed, dried and silanized. The ceramic blocks were cemented to dentin (Variolink II, Ivoclar). The assembly ceramic/ dentin was stored in distilled water (37 °C; 24 h) and sectioned in X and Y axes to get the sticks. Half of the samples were submitted to TC while the other half underwent micro-tensile bond testing. The data (MPa) were analyzed by 3-way ANOVA and Tukey test (5%). ANOVA revealed significant interaction among the factors (p = 0.0001). Tukey test showed significant higher bond strength for the 2 mm group (V280s = 17.0 ± 9.1 MPa) in comparison to the other groups. V340s TC (2.7 ± 6.3 MPa) presented lower bond strength, which was similar to the groups V180s TC (4.6 ± 4.9 MPa) and V240s TC (5.9 ± 4.4 MPa). Light-curing for 80s promoted significant higher bond strength of thicker ceramic (3 mm) than light-curing for 40s.

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Effects of cement-curing mode and light-curing unit on the bond durability of ceramic cemented to dentin

Cited by 4 publications

References 24 publications

Ceramic Inlays: Effect of Mechanical Cycling and Ceramic Type on Restoration-dentin Bond Strength

Ceramic Inlays: Effect of Mechanical Cycling and Ceramic Type on Restoration-dentin Bond Strength

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

Influence of ceramic thickness and light-curing time on the long-term µTBS of silica-based ceramic to human dentin

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