Evaluation of Micro-Tensile Bond Strength of Fibre Post with Titanium Dioxide Nanoparticles as Fillers in Experimental Dental Composite Resin

Abstract

Background: The clinical success of post-core restorations is determined by the composite utilized and the strength of the post-core adhesion. The effectiveness of titanium dioxide nanoparticles (TiO2 NPs) as a multifunctional material with photo-induced activities and better mechanical characteristics are observed as particle size is reduced to under 50 nm. Aim: The purpose of this study is to determine the bond strength of fibre-reinforced composite (FRC) posts with TiO2 NP as fillers and to compare it with conventional composite resin core material. Materials and Methods: 30 single-rooted mandibular premolars were selected and routine root canal procedures were done. A quantity of 5% TiO2 NPs were synthesized and added as silanized filler to the experimental composite resin. Post space was prepared and fibre-reinforced composite (FRC) post luting was performed. The specimens were then grouped into the following groups: Group I consisted of the experimental composite resin containing 5% TiO2 fillers, Group II consisted of core X flow, and Group III consisted of Multicore Flow. All test groups were submitted for thermocycling. After this, the samples were tested for micro tensile bond strength. A stereomicroscope with a magnification of 20× was used to examine the fractured surfaces. The data were analysed using one-way ANOVA and Tukey HSD tests. Results: Statistical analysis revealed that Group I showed the highest mean bond strength value of 35.6180 Mpa. The results obtained with Group III showed the lowest mean bond strength value of 19.4690 Mpa. Adhesive failures were identified by stereomicroscopy of the fractured surfaces. Conclusion: The experimental composite resin comprising 5% TiO2 NP had a greater bond to the FRC post than other materials tested.

Finite element analysis of maxillary first molar with mesial-occlusal-distal-palatal defect restored with different post-and-core strategies

“…Thus, both σ t and σ s were calculated in the present work. Since SBS is usually numerically larger than TBS with the same bonding agent and interface [ 39 ], whereas σ s were found all numerically higher than σ t in this work, σ s is more meaningful to discuss than σ t .…”

“…Lower stress links to lower risk of debonding, thus better retention. Tensile bond strength (TBS) and shear bond strength (SBS) are often tested to evaluate the adhesive property of the agents [ 39 ]. Thus, both σ t and σ s were calculated in the present work.…”

Silver Nanoparticles in Dental Applications: A Descriptive Review

“…Antibacterial-adhesive systems combat this. AgNP resins inhibited S. mutans on their surface and at a longer distance than the QADM bonding agent [ 71 ]. Both chemicals did not influence fibroblast cytotoxicity or microtensile bonding.…”

Clinical Efficacy of a Novel Titania Nanoparticle-Reinforced Bonding Agent in Reducing Post-Restorative Sensitivity: A randomized clinical trial

“…2 Within the prodigious lineage of metal-oxide nanoparticles, titanium dioxide (titania) has gained immense popularity owing to its biocompatibility, exceptional optical-mechanical properties, costeffectiveness, and tremendous antibacterial potential. 3 With the introduction of adhesive materials in restorative dentistry, paradigm has shifted to minimally invasive dentistry. Composite resin, being an eminent adhesive material, has primarily substituted dental amalgam as preferred material for posterior restorations.…”

“… 2 Within the prodigious lineage of metal-oxide nanoparticles, titanium dioxide (titania) has gained immense popularity owing to its biocompatibility, exceptional optical-mechanical properties, cost-effectiveness, and tremendous antibacterial potential. 3 …”