Assessment of In Vitro Methods Used to Promote Adhesive Interface Degradation: A Critical Review

Amaral, Flávia Lucisano Botelho do; Colucci, Vivian; Palma-Dibb, Regina Guenka; Corona, Silmara Aparecida Milori

doi:10.1111/j.1708-8240.2007.00134.x

Cited by 183 publications

(186 citation statements)

References 92 publications

(218 reference statements)

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“…While some authors found no significant effect on adhesion [31,32], others did [33,34]. Its effect on bond strength is contradictory and seems to depend on the number of cycles [35,36], size of the specimens [36,37] and the C-factor [38,39]. Thus, the clinical relevancy of such aging methods has to be correlated with clinical studies in the future.…”

Section: Discussionmentioning

confidence: 99%

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

et al. 2016

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OBJECTIVE Multiphase resin composite materials have been advocated as an alternative to reinforced ceramics but limited information is available to date on their stability. This in vitro study evaluated the effect of axial and lateral forces on the strength of endocrowns made of Li2Si2O5 and multiphase resin composite. METHODS Sound human molars (N=60, n=10 per group) were randomly divided into 6 groups: Group C: Control, no preparation or restoration; Group LI: Endocrown made of Li2Si2O5 (IPS e.max CAD) and Group LA: Endocrown made of multiphase resin composite material (Lava Ultimate). After decapitation and endodontic preparation, immediate dentin sealing was performed. Following CAD/CAM fabrication, their cementation surfaces were silica coated (CoJet System) and silanized (ESPE-Sil). Endocrowns were then adhesively cemented (Variolink II). All specimens were thermocycled (×10,000 cycles). While half of the specimens in each group were subjected to axial (C(A), LI(A), LA(A)), the other half was subjected to lateral static (C(L), LI(L), LA(L)) loading (1mm/min). Failure type and location after debonding/fracture were classified. Data were analyzed using ANOVA and Tukey's post hoc test ( =0.05). Two-parameter Weibull distribution values including the Weibull modulus, scale (m) and shape (0), values were calculated. RESULTS Under axial loading, mean fracture strength (N) did not show significant difference between groups: LAA (2675±588)(a), LIA (2428±566)(a), CA (2151±672)(a) (p>0.05) and under lateral loading, LAL (838±169)(A) presented significantly lower mean values than those of other groups: CL (1499±418)(B), LIL (1118±173)(B) (p<0.05). Both endocrown materials and the control group were more vulnerable to lateral loading than axial loading. Under axial loading, Weibull distribution presented higher shape (0) for Groups LIA (5.35) and LAA (5.08) than that of the control (3.97) and under lateral loading LIL (7.5) showed higher shape (0) than those of other groups (4.69-6.46). After axial loading, failure types were mainly cohesive in the material and after lateral loading primarily adhesive between the material and dentin for both LI and LA, most of which were repairable. SIGNIFICANCE Under axial loading, molars restored with endocrowns performed similar with both Li2Si2O5 and multiphase resin composite but the latter was less durable under lateral loading. loading LI L (7.5) showed higher shape ( 0 ) than those of other groups (4.69-6.46). After axial loading, failure types were mainly cohesive in the material and after lateral loading primarily adhesive between the material and dentin for both LI and LA, most of which were repairable.Significance. Under axial loading, molars restored with endocrowns performed similar with both Li 2 Si 2 O 5 and multiphase resin composite but the latter was less durable under lateral loading.Keywords: CAD/CAM; Composite; Ceramic; Endocrowns; Endodontics; Hybrid materials; Lithium disilicate IntroductionSevere coronal tooth structure loss due to extensive caries o...

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Section: Discussionmentioning

confidence: 99%

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

et al. 2016

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“…The laser beam was applied using a noncontact method, focused at a distance of 12 mm from the substrate with water spray of 1.5 mL/min (9).…”

Section: Specimen Preparationmentioning

confidence: 99%

“…The degradation of the bonding interface has a considerable influence on the clinical performance and survival of the resin composite restorations (9,10). Studies have shown that matrix metalloproteinase (MMP) inhibitors, such as chlorhexidine (CHX) and more recently sodium fluoride (NaF), are able to preserve the structural integrity of the hybrid layer and consequently improve the longevity of restorations (11)(12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Effect of Metalloproteinase Inhibitors on the Microtensile Bond Strength of Composite Resin to Er:YAG Laser-Irradiated Dentin

et al. 2016

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This study evaluated the effect of matrix metalloproteinase (MMP) inhibitors -2% (CHX) and sodium fluoride (NaF) (5000 ppm) -on microtensile bond strength (μTBS) of composite resin to Er:YAG laser-irradiated dentin after chemical degradation of the bond interface. The occlusal surface of forty sound human molars was removed exposing the dentin surface (n=10), which was polished, irradiated with Er:YAG laser, acid etched and dried. Twenty specimens were rewetted with 2% CHX (control group) and 20 were rewetted with NaF (5000 ppm). The adhesive system was applied and a 4-mm-high plateau of light-cured composite resin was built up. Resin-dentin sticks were obtained with a rectangular cross-sectional area (0.8-1 mm 2 ) and were either stored in water at 37 °C for 24 h or submitted to chemical degradation. For chemical degradation, they were immersed in 10% NaOCl aqueous solution for 5 h and rinsed in water for 1 h. The sticks were submitted to microtensile test in a mechanical testing machine at 0.5 mm/min until failure. Fracture pattern was analyzed using SEM. μTBS values were calculated in MPa and submitted to analysis of variance ANOVA (α=0.05). The variance analysis showed that the 'MMP inhibitor ' and 'degradation' factors (p=0.214 and p=0.093, respectively) and interaction between the factors were not statistically significant (p=0.143). Mixed failure predominated in all groups. In conclusion, the 2% CHX and NaF 5000 ppm presented similar μTBS of composite resin to laser-irradiated dentin before and after chemical degradation

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“…The mechanism of bond degradation seems be complex including the size of the adhesive area where water is indispensable for this action [12]. The water sorption decreases the frictional forces between the polymer chains of the bonding area that eventually decreases the mechanical properties of the resin [12].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, thermocycling is used in some studies [7,9] aiming to induce contraction/expansion stresses at the interface that results from the thermal expansion coefficient of the materials [12]. This can induce crack propagation along the interface and consequently debond the materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of aging type and aged unit on the repair strength of resin composite to feldspathic porcelain in testing microtensile bond strength

Corazza

Carvalho

Souza

et al. 2015

Journal of Adhesion Science and Technology

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(2016). Effect of aging type and aged unit on the repair strength of resin composite to feldspathic porcelain in testing microtensile bond strength. Journal of Adhesion Science and Technology, 30(4) Weibull modulus and characteristic strength was the highest in BTC (m=4.2; σ o: 34.4) among all other groups (m=3-3.9; σ o: 14.6-28.5). Adhesive failures were common and cohesive failures occurred in less than 5% in all groups. Aging protocol was detrimental on durability of repair strength of resin composite to feldspathic porcelain. Exposing the sticks to either thermocycling or water storage aging should be considered in in-vitro studies.

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Assessment of In Vitro Methods Used to Promote Adhesive Interface Degradation: A Critical Review

Cited by 183 publications

References 92 publications

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

Effect of Metalloproteinase Inhibitors on the Microtensile Bond Strength of Composite Resin to Er:YAG Laser-Irradiated Dentin

Effect of aging type and aged unit on the repair strength of resin composite to feldspathic porcelain in testing microtensile bond strength

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