Water sorption and mechanical properties of dental composites

Bastioli, Catia; Romano, G.; Migliaresi, Claudio

doi:10.1016/0142-9612(90)90159-n

Cited by 58 publications

(42 citation statements)

References 9 publications

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“…As it is difficult to evaporate water from these adhesives, water will rapidly diffuse back from the bonded dentin into the adhesive resin and, subsequently, a lower mechanical strength results. 28 Recent reports indicate that one-step self-etching adhesives do not perform well in bond strength measurements. The authors of the current study found that, for deep dentin, Clearfil SE Bond showed statistically higher bond strengths than the other adhesive systems tested.…”

Section: Discussionmentioning

confidence: 99%

Bond Strength of Different Adhesive Systems to Dental Hard Tissues

Yazici¹,

Çelik²,

Özgünaltay³

et al. 2007

Operative Dentistry

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©Operative Dentistry, 2007, 32, 166-172 SUMMARYThis study compared the shear bond strengths of different adhesive systems to enamel and dentin of different depths. The adhesive systems used were: Single Bond one-bottle total-etch; AQ Bond one-step self-etching, Clearfil SE Bond two-step self-etching and Tyrian SPE/One-step Plus two-step self-etching.Eighty extracted non-carious human mandibular molars were mounted in self-curing resin and the occlusal surfaces were ground with a mechanical grinder to obtain flat occlusal enamel surfaces. After applying the adhesive systems, a plastic tube was attached to the enamel surfaces. The tube was filled with a universal hybrid resin composite, which was then polymerized. The specimens were stored in water at 37°C for 24 hours. Shear bond testing was carried out using an Instron Universal testing machine with a crosshead speed of 1 mm/minute. The occlusal enamel of the 80 teeth was removed to determine the bond strengths of the adhesives to superficial dentin. To obtain deep dentin, the same teeth were ground deep towards the pulp, with the remaining dentin thickness approximately 0.7 mm. The adhesives and restorative material were then applied to the prepared dentin surfaces following the methodology described above. For occlusal enamel surfaces, the bond strength of Single Bond was significantly higher than the other adhesives. Single Bond, Clearfil SE Bond and Tyrian SPE/One-step Clinical RelevanceBond strength to dental hard tissues was dependent upon the type of adhesive system used and varied with respect to tooth regions.

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Section: Discussionmentioning

confidence: 99%

Bond Strength of Different Adhesive Systems to Dental Hard Tissues

Yazici¹,

Çelik²,

Özgünaltay³

et al. 2007

Operative Dentistry

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show abstract

“…It is difficult to evaporate water from the one-step adhesives, and even if evaporation is successful, water rapidly diffuses back from the bonded dentin into the adhesive resin 27) . This water sorption plasticizes polymers and increases solubility, and decreases modulus of elasticity 26) and the polymers' mechanical properties 28) . Therefore, the one-step self-etching system Clearfil Tri-S Bond showed low bonding potential.…”

Section: Discussionmentioning

confidence: 99%

Effect of remaining dentin thickness on bond strength of various adhesive systems to dentin

et al. 2012

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The aim of this study was to evaluate the effect of remaining dentin thickness (RDT) on resin composite bond strength to dentin surfaces when using various adhesive systems. One of three adhesives, Clearfil SE Bond, Single Bond or Clearfil Tri-S Bond, followed by Z100 resin composite were built up on flat dentin surfaces of human molars. The teeth were sectioned obtaining beams with crosssectional areas of approximately 1 mm 2 . RDT was measured and microtensile bond strength was determined. Resulting data were categorized into four groups: RDT<2 mm; 2≤RDT<3 mm; 3≤RDT<4 mm; RDT≥4 mm. Clearfil SE Bond showed a correlation between µTBS and RDT. Single Bond showed no significant difference in µTBS for any RDT. The bond strength of resin composite to the different RDT flat dentin surfaces was affected by the adhesive system used.

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“…During the thermal cycling test, hot water may accelerate the hydrolysis of resin and extract poorly polymerized resin oligomers. [29][30] Water and other chemicals leaching from the oral cavity might decrease the mechanical properties of polymers. The decreased mechanical properties of resin composite might contribute to the decreased bond strengths of any adhesive systems.…”

Section: Discussionmentioning

confidence: 99%

Effect of Thermal Cycling on Enamel Bond Strength of Single-step Self-etch Systems

Amano

Yamamoto

Tsubota

et al. 2006

Operative Dentistry

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After thermal cycling, some recently introduced simplified bonding systems showed no change in enamel bond strengths. The systems used were Absolute, Clearfil tri-S Bond, G-Bond and One-Up Bond F Plus. Bovine mandibular incisors were mounted in self-curing resin, and the facial surfaces were wet ground with #600 SiC paper. Adhesives were applied on the prepared enamel surfaces and light irradiated according to each manufacturer's instructions. Resin composites were condensed into a mold (ø4x2 mm) and light irradiated for 30 seconds. Thirty specimens per adhesive systems were divided into 1 of 3 test groups (n=10) following storage in water at 37°C for 24 hours. The specimens were then stored in 37°C water for 24 hours, followed by thermal cycling 10,000 and 20,000 times between 5°C and 60°C. After each storage condition, the specimens were tested in shear mode at a crosshead speed of 1.0-mm/minute. One-way ANOVAs and Tukey HSD test at a level of 0.05 were conducted.After 24 hours of water storage, the mean enamel bond strengths ranged from 11.3 to 16.9 MPa, and Clearfil tri-S Bond showed significantly higher bond strength. After thermal cycling, the mean bond strengths ranged from 8.3 to 20.7 MPa. The changes in enamel bond strengths were different among the adhesive systems tested. Failure modes after the test were commonly adhesive failure associated with partial cohesive failure adhesive in resin.

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Water sorption and mechanical properties of dental composites

Cited by 58 publications

References 9 publications

Bond Strength of Different Adhesive Systems to Dental Hard Tissues

Bond Strength of Different Adhesive Systems to Dental Hard Tissues

Effect of remaining dentin thickness on bond strength of various adhesive systems to dentin

Effect of Thermal Cycling on Enamel Bond Strength of Single-step Self-etch Systems

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