The effect of silver nanoparticles, zinc oxide nanoparticles, and titanium dioxide nanoparticles on the push-out bond strength of fiber posts

Abstract

Background: This study was undertaken to investigate the effect of intraradicular dentin pretreatment with silver nanoparticles (SNPs), zinc oxide nanoparticles (ZNPs), and titanium oxide nanoparticles (TNPs) on the push-out bond strength (PBS) of fiber posts to root dentin using two types of resin cements. Material and Methods: Eighty single-rooted human premolar roots were randomly divided into eight groups after endodontic treatment and post space preparation, according to the type of intraradicular dentin pretreatment with different nanoparticle solutions (n=20). The groups included no pretreatment (control) and pretreatments with SNPs, ZNPs, and TNPs. Each group was divided into 2 subgroups (n=10) according to cementation: Excite DSC/ Variolink II and ED Primer II/Panavia F2.0. The PBS values were measured in different areas of the post space. The data were subjected to the three-way analysis of variance and Tukey tests (p=0.05). Results: The SNP-pretreated groups showed significantly higher PBS values than the other groups. No significant differences in PBS were noted among the control, ZNP-pretreated, and TNP-pretreated groups. There was no significant difference in the PBS of the fiber posts with respect to cement type. The PBS was significantly lower in the apical region than in the other two regions. There was no statistically significant difference between the PBSs of the cervical and middle thirds. Conclusions: Intraradicular dentin pretreatment with SNPs, TNPs, and ZNPs did not interfere with the PBS of the fiber posts. The best result was obtained for the SNP-pretreated groups for both types of cement. Also, the lowest PBS was found in the apical third of the root canal spaces.

<p>The Effect of Silver, Zinc Oxide, and Titanium Dioxide Nanoparticles Used as Final Irrigation Solutions on the Fracture Resistance of Root-Filled Teeth</p>

“…39,42 It has been previously found that SNP pretreatment before fiber post cementation with resin cements can improve the push-out bond strength of fiber post to root canal dentin. 28 The effect of the nanoparticles used as root canal irrigants on the bond strength of the resin sealer to radicular dentin was not assessed directly in the present study. However, the high fracture resistance values observed for the groups irrigated with the nanoparticles might be related to the positive effects of the nanoparticles on the sealer bond strength to root dentin.…”

“…27 Additionally, no interference with the push-out bond strength of the fiber posts was observed after intraradicular dentin pretreatment with SNPs, TNPs, and ZNPs. 28 Nanoparticles can also be used as root canal irrigants. 19 Three nanoparticles (SNPs, TNPs, and ZNPs) were used as final irrigation solutions in this study and the groups treated with them had the highest FR values.…”

Effect of reapplication on pull-out bond strength of fibre post to root dentin: An in vitro study

“…Previous studies reported a high adhesive failure rate of the post cement interface ( Nova et al, 2013 , Shafiei et al, 2018 ). FRC posts have a highly cross-linked polymer matrix that makes it unable to reactivate the material and also cause a decrease in bond strength between the post and dentin ( Nova et al, 2013 , Shafiei et al, 2018 ). In the current study, the failure types of the groups did not show a statistically significant difference ( Fig.…”

Synthesis and characterization of mesoporous zinc oxide nanoparticles and evaluation of their biocompatibility in L929 fibroblasts

“…Moreover, ZnO NPs demonstrated high safety and stability, good biocompatibility, low toxicity, and low cost (Moradpoor et al, 2021 ; Thakral et al, 2021 ). Therefore, ZnO NPs have drawn attention in many fields of dentistry, such as endodontics, restorative dentistry, prosthodontics, and periodontal fields (Jowkar, Hamidi, et al, 2020 ; Jowkar, Omidi, et al, 2020 ).…”