Effect of the Photo-initiator System Contained in Universal Adhesives on Radicular Dentin Bonding

Carvalho, Rubens; Cardenas, Afm; Carvalho, Ceci Nunes; Souza, Jullian Josnei de; Bauer, José; Siqueira, Fabiana Suelen Figuerêdo de; Vega, Ana del Carmen Armas; Loguercio, A D; Hass, Viviane

doi:10.2341/19-146-l

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…New technologies have been introduced such as the advanced polymerization system (APS), which is used in adhesives and composite resins (24,25,26). This technology involves the combination of different photoinitiators through partial replacement of camphorquinone (24)(25)(26). The incorporation of this system provides different benefits to the materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of thickness on shrinkage stress and bottom‐to‐top hardness ratio of conventional and bulk‐fill composites

Santin

Velo

Camim

et al. 2021

European J Oral Sciences

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This study evaluated the effect of the material thickness on shrinkage stress and bottom-to-top hardness ratio of conventional and bulk-fill composites. Six commercial composites were selected based on their different technologies: Two conventional (C1, C2), two high-viscosity bulk-fill (HVB1, HVB2), and two low-viscosity bulkfill (LVB1, LVB2). Shrinkage stress was analyzed for five specimens with 2 mm thickness (C-factor 0.75 and volume 24 mm 3 ) and five specimens with 4 mm thickness (C-factor 0.375 and volume 48 mm 3 ) for 300 s in a universal testing machine.Bottom-to-top hardness ratio values were obtained from Knoop microhardness measurements in specimens with 2-and 4-mm thickness (n = 5). Thickness increase resulted in significantly higher shrinkage stress for all materials with the exception of HVB2 and LVB1. C1, C2, HVB2, and LVB1 showed lower bottom-to-top hardness ratios at 4 mm than at 2 mm. Only LVB2 presented a bottom-to-top hardness ratio lower than 80% at 2 mm, while HVB1 surpassed this threshold at 4 mm of depth.The results suggest that the increase of composite thickness affected the shrinkage stress values. Also, thickness increase resulted in lower bottom-to-top hardness ratio. HVB1 showed better behavior than other bulk-fill materials, with low stress and adequate bottom-to-top hardness ratio at 4 mm thickness.

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Section: Introductionmentioning

confidence: 99%

Effect of thickness on shrinkage stress and bottom‐to‐top hardness ratio of conventional and bulk‐fill composites

Santin

Velo

Camim

et al. 2021

European J Oral Sciences

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show abstract

“…In other words, dentin-resin cement interface is a weak interface in terms of bond strength. (5,6) Universal adhesives are capable of bonding to different substrates and can be used in selfetch and total-etch modes. (7,8) Considering the relatively recent introduction of universal adhesives to the dental market, information regarding their properties is still limited.…”

Section: Introductionmentioning

confidence: 99%

Push-out bond strength of glass fiber posts with two universal adhesives in endodontically-treated teeth

Valian

Maghsoudlou

Roudbari

2021

J Res Dent Maxillofac Sci

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Background and Aim: Attempts are ongoing to simplify the bonding procedure by decreasing the procedural steps. Universal adhesives were introduced to serve this purpose. This study aimed to evaluate the push-out bond strength of glass fiber posts in endodontically-treated teeth with two universal adhesives. Materials and Methods: In this in vitro, experimental study, 22 single-rooted mandibular premolars were decoronated at their cementoenamel junction, endodontically treated and were randomly divided into two groups. The G-Premio Bond was used in the first and All-Bond Universal was used in the second group, according to the manufacturers' instructions. Angelus fiber posts were cemented using RelyX U200 Automix self-adhesive resin cement. The roots were cut into 1-mm-thick sections perpendicular to the longitudinal axis of the tooth in the cervical, middle, and apical thirds. The push-out test was performed in a universal testing machine at a crosshead speed of 1 mm/min, and bond strength values were recorded. The failure modes were also determined. The data were analyzed using ANOVA and linear mixed models (α=0.05). Results:The mean push-out bond strength was significantly higher in All Bond Universal than G-Premio Bond (P=0.036). Also, there were statistically significant differences in the push-out bond strength of adhesives in different parts of the root canal (P=0.039). All failures were type 4 in both groups (adhesive failure between the dentin and resin cement). Conclusion: All Bond Universal yielded superior push-out bond strength than G-Premio. However, further in vitro and in vivo studies with larger sample size are required for an evidence-based decision making.

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A universal adhesive containing copper nanoparticles improves the bonding and mechanical properties of resin cement–root dentin interface: an in vitro study

Gutiérrez

Ñaupari-Villasante

Ocampo

et al. 2023

Journal of Adhesion Science and Technology

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Effect of the Photo-initiator System Contained in Universal Adhesives on Radicular Dentin Bonding

Abstract: Clinical Relevance The photo-initiator system based on an advanced polymerization system may be an alternative that can be used to overcome the disadvantages of radicular dentin, especially for the apical third.

Cited by 6 publications

References 37 publications

Effect of thickness on shrinkage stress and bottom‐to‐top hardness ratio of conventional and bulk‐fill composites

Effect of thickness on shrinkage stress and bottom‐to‐top hardness ratio of conventional and bulk‐fill composites

Push-out bond strength of glass fiber posts with two universal adhesives in endodontically-treated teeth

A universal adhesive containing copper nanoparticles improves the bonding and mechanical properties of resin cement–root dentin interface: an in vitro study

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