Shear bond strength of adhesive systems to enamel and dentin. Thermocycling influence

Santos, Patrícia Aleixo dos; Garcia, Patrícia Petromilli Nordi Sasso; Palma-Dibb, Regina Guenka

doi:10.1007/s10856-005-2609-2

Cited by 26 publications

(32 citation statements)

References 9 publications

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“…A significant reduction in shear bond strength was observed for the etch-and-rinse adhesive controls following 1,000 cycles but not for the other restorative protocols. Similar bond strengths and the failure of 1,000 cycles to significantly reduce shear bond strength have been reported previously 44) and may indicate bond failure had not occurred across the entire dentin surface. Increasing the number of cycles may result in a more significant reduction in shear bond strength.…”

Section: Discussionsupporting

confidence: 83%

“…Increasing the number of cycles may result in a more significant reduction in shear bond strength. The addition of 10% Rhodamine B dye to the bonding system had the potential to disturb adhesion but CLSM images demonstrated good adaptation and shear bond strengths similar to that previously reported 44,45) . In the restorative groups examined, resin adhesion to dentin was reduced following air abrasion and thermocycling.…”

Section: Discussionsupporting

confidence: 78%

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Effect of air abrasion and thermocycling on resin adaptation and shear bond strength to dentin for an etch-and-rinse and self-etch resin adhesive

et al. 2012

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This study examined the effect of air abrasion and thermocycling on the adaptation and shear bond strength, of composite resin bonded to dentin using etch-and-rinse and self-etch resin adhesives. Confocal microscopy showed both adhesives closely adapted to dentin and a significantly (p<0.001) greater number of resin tags were observed for the etch-and-rinse adhesive. Air abrasion significantly increased resin tag length (p<0.05) for the etch-and-rinse adhesive and significantly increased the number (p<0.001), length (p<0.001) and thickness (p<0.01) of tags for the self-etch adhesive. However, air abrasion resulted in defect formation within the hybrid layer and thermocycling caused separation of the hybrid layer from adjacent dentin containing resin tags. A significant (p<0.05) reduction in shear bond strength was observed for the etch-and-rinse adhesive following thermocycling. Both adhesive systems adapted well to dentin in vitro and shear bond strengths were similar. The area of tag penetration into dentin was significantly (p<0.0001) enhanced following air abrasion.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 78%

Effect of air abrasion and thermocycling on resin adaptation and shear bond strength to dentin for an etch-and-rinse and self-etch resin adhesive

et al. 2012

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“…In an attempt to mimic the natural aging process of a dental restoration, thermocycling protocols [28][29][30][31][32] and the water storage of bonded specimens [33][34] have been suggested as efficient methods to provide in vitro simulation of in vivo conditions. Thermocycling has been the most used method to stress the adhesive interface, 31 while water storage has been shown to reduce bond strength, even after a short period of storage, indicating that bonds degrade over time.…”

Section: Introductionmentioning

confidence: 99%

Adhesion to Er:YAG Laser-prepared Dentin After Long-term Water Storage and Thermocycling

Amaral¹,

Colucci²,

Souza‐Gabriel³

et al. 2008

Operative Dentistry

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This in vitro study evaluated the microtensile bond strength of a resin composite to Er:YAG-prepared dentin after long-term storage and thermocycling. Eighty bovine incisors were selected and their roots removed. The crowns were ground to expose superficial dentin. The samples were randomly divided according to cavity preparation method (I-Er:YAG laser and II-carbide bur). Subsequently, an etch & rinse adhesive system was applied and the samples were restored with a resin composite. The samples were subdivided according to time of water storage (WS)/number of thermocycles (TC) performed: A) 24 hours WS/no TC; B) 7 days WS/500 TC; C) 1 month WS/2,000 TC; D) 6 months WS/12,000 TC. The teeth were sectioned in sticks with a cross-sectional area of 1.0-mm2, which were loaded in tension in a universal testing machine. The data were subjected to two-way ANOVA, Scheffé and Fisher's tests at a 5% level. In general, the bur-prepared group displayed higher microtensile bond strength values than the laser-treated group. Based on one-month water stbrage and 2,000 thermocycles, the performance of the tested adhesive system to Er:YAG-laser irradiated dentin was negatively affected (Group IC), while adhesion of the bur-prepared group decreased only within six months of water storage combined with 12,000 thermocycles (Group IID). It may be concluded that adhesion to the Er:YAG laser cavity preparation was more affected by the methods used for simulating degradation of the adhesive interface.

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“…This can be ascribed to adhesion to dentin being more difficult than to enamel because of the former's morphological features. 18,26 The mechanical properties and reinforcing capacity of FRCs used in dentistry depend on the fiber type, fiber orientation relative to the load, fiber position in the restoration, impregnation of the fiber, fiber volume fraction, and adhesion of the fiber to the resin matrix. 25,27 Several studies investigated the reinforcement effectiveness of FRCs, but controversial results were reported regarding the reinforcement effectiveness of such systems.…”

Section: Discussionmentioning

confidence: 99%

The influence of different fiber-reinforced composites on shear bond strengths when bonded to enamel and dentin structures

Ilday

Seven

2011

Journal of Dental Sciences

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Background/purpose: The aim of this study was to evaluate the effect of different fiber-reinforced composites (FRCs) on the shear bond strength of composites bonded to tooth structures. Materials and methods: One hundred human non-carious upper central incisors were used. The FRC test specimens consisted of 4 commercially available polyethylene fiber products (Ribbond, Construct (CT), glass-fiber everStick (ES), and Stick, and one nanohybrid composite (Grandio), bonded to the vestibular surface of adhesive-treated enamel and dentin. Control groups were prepared using the nanohybrid composite along without fiber reinforcement. Specimens were stored wet for 24 hours at 37 C and thermocycled 5000 times between 5 and 55 C. Then, the shear bond strength (SBS) was determined using a universal test machine (Instron) at a crosshead speed of 0.5 mm/min. The failure patterns of the debonded specimens were evaluated using a stereoelectron microscope. Scanning electron microscopy (SEM) was used to assess the fiber resin interface of representative samples. SBS data were analyzed using analysis of variance (ANOVA) and Duncan's test (a Z 0.05). Results: SBS data ranged 21.54e40.18 MPa for the enamel substrates and 20.83e36.87 MPa for the dentin substrates. The one-way ANOVA results revealed statistically significant differences between the shear bond strengths of the experimental and control groups (P < 0.001). Two-way ANOVA of the experimental groups demonstrated statistically significant differences in SBSs between different fiber types and substrates (P < 0.05). A typical SEM micrograph of the surface of the fractured specimens following the shear bond test exhibited no evidence of debonding between the fiber and matrix when using the CT and ES fibers. The SEM analysis revealed that Stick fiber reinforcement contained some air voids in the final FRC structure.

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Shear bond strength of adhesive systems to enamel and dentin. Thermocycling influence

Abstract: Thermocycling did not influence significantly the shear bond strength of the tested adhesive systems; enamel was the dental substrate that showed larger adhesive strength; One Coat Bond system showed the best adhesive strength averages regardless of substrate or thermocycling.

Cited by 26 publications

References 9 publications

Effect of air abrasion and thermocycling on resin adaptation and shear bond strength to dentin for an etch-and-rinse and self-etch resin adhesive

Effect of air abrasion and thermocycling on resin adaptation and shear bond strength to dentin for an etch-and-rinse and self-etch resin adhesive

Adhesion to Er:YAG Laser-prepared Dentin After Long-term Water Storage and Thermocycling

The influence of different fiber-reinforced composites on shear bond strengths when bonded to enamel and dentin structures

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