Kinetics of polymerization shrinkage of self-adhesive and conventional dual-polymerized resin luting agents inside the root canal

Pulido, Camilo; Arrais, César Augusto Galvão; Gomes, Giovana Mongruel; Franco, Ana Paula G.B.; Kalinowski, Hypolito José; Dávila-Sánchez, Andrés; Gómes, Osnara María Mongruel

doi:10.1016/j.prosdent.2020.01.017

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…Several studies have suggested that a thick layer of cement may induce detachment of GFRC posts [22,23,43,[50][51][52] although other studies [53,54] have shown that the bond strength was not in uenced by increasing the thickness of the resin-matrix cement layer. Self-adhesive resin-matrix cements have been recently suggested for the cementation of GFRC posts and indirect restorations [43,55]. Such recommendation is based on the fact that self-adhesive cements are not as sensitive e as conventional resin-matrix cements, which require the previous use of bonding systems [43].…”

Section: Discussionmentioning

confidence: 99%

Intraradicular diameter, remnant dentin thickness, and endodontic post-to-dentin distanc: An investigation using CBCT and microscopy

Souza

Soares

Fernandes

et al. 2023

Preprint

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The objective of this work was to measure the tooth root canals’ diameter, remnant dentin thickness, and the endodontic post-to-dentin distance after three types of root canal preparation. Thirty extracted human premolars were endodontically treated and groups of specimens were divided according to the cementation with two different endodontic post as follow: A) Fibio Fiberglass Post™, Anthogyr, France; B) multi-filament GFRC (Rebilda GT™, VOCO, Germany). Cone beam computed tomography (CBCT) and conventional x-ray analyses were performed before and after the endodontic post cementation. After cementation, specimens were cross-sectioned and inspected by optical microscopy and scanning electron microscopy at magnification from x30 up to x2000. The shape variation of the root canal preparation caused a decrease in the thickness of the remnant tooth tissues. CBCT and microscopic analyses also revealed a clear variation of resin-matrix cement around all the endodontic GFRC posts. A multi-filament GFRC post provided a distribution of filaments although the resin-matrix cement revealed a high volume among the filaments. An increase in thickness and volume of resin-matrix cement was noticed at the coronal third since the fitting was compromised due to anatomic variations and root canal preparation. Defects such macro-scale pores, cracks, and voids were also detected by microscopic analyses. The root canal preparation can promote a decrease in the thickness of the remnant tooth tissues that can increase the risks of clinical failures by fracture. The thickness and volume of resin-matrix cement varied around both GFRC posts. Additionally, that increased from the apex up to the coronal third due to the lack of fitting. Clinical significance: The root canal preparation of teeth is the first step the fitting of glass fiber-reinforced composite (GFRC) post. However, the tooth tissues must be preserved to maintain the mechanical integrity of the restored tooth. An adequate fitting of the GFRC post along the intracanal regions can promote a well-distribution of the resin-matrix cement volume that decreases the risks of defects such as voids and cracks.

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Section: Discussionmentioning

confidence: 99%

Intraradicular diameter, remnant dentin thickness, and endodontic post-to-dentin distanc: An investigation using CBCT and microscopy

Souza

Soares

Fernandes

et al. 2023

Preprint

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“…Both the mechanical interlocking between the resin composite luting system and tooth substrates and the chemical interaction between the functional monomers in the resin composite luting system and mineralized tissue may play important roles in achieving strong adhesion when setting indirect restorations with resin composite luting systems. 1,2 In addition, the polymerization behavior of materials between tooth substrates and indirect restorations is also important [9,10]. The resin composite luting systems used in this study have primers that contain functional monomers to establish a chemical reaction between the resin composite luting agent and tooth substrates.…”

Section: Discussionmentioning

confidence: 99%

“…The polymerization behavior of resin composite luting agents also affects the adhesion integrity of interfaces [9]. Polymerization shrinkage of the resin composite luting agents generates contraction stress in the vicinity of the cavity floor [10].…”

Section: Introductionmentioning

confidence: 99%

Immediate bond performance of resin composite luting systems to saliva‐contaminated enamel and dentin in different curing modes

Ishii

Takamizawa

Katsuki

et al. 2022

European J Oral Sciences

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The purpose of this study was to evaluate the immediate shear bond strength of resin composite luting systems to tooth with or without saliva contamination in different curing modes. The Knoop hardness number of the resin composite luting agents was measured. Four combinations of resin composite luting systems were used. The shear bond strength to bovine teeth was measured with and without saliva contamination in different curing modes at different storage periods. The Knoop hardness number of the resin composite luting agents was also evaluated. Significantly lower enamel and dentin shear bond strengths and Knoop hardness number values were observed in all resin composite luting systems at 5 min versus 24 h, regardless of the curing mode or saliva contamination. The influence of the curing mode of the resin composite luting systems on shear bond strengths and Knoop hardness number was dependent on material. For the saliva contamination conditions, only G-CEM ONE EM did not show any significant difference in shear bond strength among the groups with and without saliva contamination, regardless of curing mode, storage period, or tooth substrate. All the resin composite luting systems showed lower shear bond strengths and Knoop hardness number values immediately after setting.

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“…Fiber post application is based on the rationale that fibers might help reinforcing the weakened structure (Scotti et al, 2016b), also preventing catastrophic fractures compared to conventional metal posts (Goracci and Ferrari, 2011). The difficulties designing a well-defined protocol for dual-curing cements usage arise from the fact that polymerization kinetic of these cements is influenced by time and irradiance (Pulido et al, 2020), (Flury et al, 2014). As a matter of fact, in literature was observed that light-curing might change the polymerization kinetic, influencing the ongoing chemical curing (Feng et al, 2009), (Price et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Could light-curing time, post-space region and cyclic fatigue affect the nanomechanical behavior of a dual-curing cement for fiber post luting?

Serino

Comba

Baldi

et al. 2022

Journal of the Mechanical Behavior of Biomedical Materials

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Kinetics of polymerization shrinkage of self-adhesive and conventional dual-polymerized resin luting agents inside the root canal

Cited by 8 publications

References 33 publications

Intraradicular diameter, remnant dentin thickness, and endodontic post-to-dentin distanc: An investigation using CBCT and microscopy

Intraradicular diameter, remnant dentin thickness, and endodontic post-to-dentin distanc: An investigation using CBCT and microscopy

Immediate bond performance of resin composite luting systems to saliva‐contaminated enamel and dentin in different curing modes

Could light-curing time, post-space region and cyclic fatigue affect the nanomechanical behavior of a dual-curing cement for fiber post luting?

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