Modification of the dentin surface by using carbon nanotubes

Abstract

Recent studies have shown that carbon nanotubes (CNTs) can be used as biomedical materials because of their unique properties. CNTs effect nucleation of hydroxyapatite, because of which considerable interest has been generated regarding the use of CNTs in dentistry. However, there are only a few reports on the use of CNTs as dental materials. In this study, we investigated the changes induced in the surfaces of tooth slices by the application of a coating of CNTs by observing CNTcoated tooth slices both macroscopically as well as under a scanning electron microscope. Further, we investigated the effect of CNT coating on the tensile bond strength of dentin adhesives. CNTs adhered easily to the tooth surfaces when tooth slices were suspended in a CNT-dispersed solution. Interestingly, it was observed that CNTs selectively adhered to the surfaces of dentin and cementum, possibly by adhering to their exposed collagen fibers. In addition, the CNT coating did not affect the tensile bond strength of dentin adhesives. These results indicate that coating of the teeth with CNTs can be a possible application of CNTs as dental materials.

RETRACTED: Influence of carbon and graphene oxide nanoparticle on the adhesive properties of dentin bonding polymer: A SEM, EDX, FTIR study

“…44 In our study, the inclusion of CNPs inside the adhesives also improved their bond strength (although less than the 2.5% GNP adhesive), and our results agree with the findings of a similar previous study. 24 CNPs interact and adhere selectively with the collagen fibers of dentin, 13,14 and this could have probably resulted in improving the bond strength of the adhesive, as seen in the current study. Most of the failures detected in the present study were adhesive in nature.…”

“…10 In dentistry, CNPs have been used for drug delivery and reinforcing restorative materials due to their apt biocompatibility and superior mechanical strength. 11,12 Previously, it was shown in a study that CNPs could adhere selectively with the collagen fibers of dentin, 13 and this could possibly boost mechanical strength of the adhesives. Suo et al also indicated that CNPs intermingle with the collagen fibers, forming a firm surface coating on dentin.…”

Nanoparticles used in dentistry: A review

“…Nanotubes can induce inflammatory and fibrotic reactions under some conditions by crossing membrane barriers. [98][99][100][101][102] Graphene Teeth coating, suitable for implantation, biofilm reduction Cost effectiveness, fracture resistant, low density form a uniform crystal lattice, treat bacterial biofilm…”

Applications of Nanotechnology in Interdisciplinary Dentistry

“…Akasaka et al coated the dentin surface with CNTs solution aimed at prevention of recurrent caries under composite restoration. The authors observed that CNTs could serve as promising pre-treatment agents under composite restoration, since they were found to bond to the collagen of dentin, serves as nucleation sites for hydroxyapatite without interfering the bond strength of composite to tooth [37]. The strength and stiffness of composite and epoxy resin were increased by incorporation of CNTs which acted as nanollers [38].…”