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Abstract
Dentin adhesives (DAs) play a critical role in the clinical success of dental resin composite (DRC) restorations. A strong bond between the adhesive and dentin improves the longevity of the restoration, but it is strongly dependent on the various properties of DAs. The current review was aimed at summarizing the information present in the literature regarding the improvement of the properties of DAs noticed after the addition of bioactive inorganic fillers. From our search, we were able to find evidence of multiple bioactive inorganic fillers (bioactive glass, hydroxyapatite, amorphous calcium phosphate, graphene oxide, calcium chloride, zinc chloride, silica, and niobium pentoxide) in the literature that have been used to improve the different properties of DAs. These improvements can be seen in the form of improved hardness, higher modulus of elasticity, enhanced bond, flexural, and ultimate tensile strength, improved fracture toughness, reduced nanoleakage, remineralization of the adhesive–dentin interface, improved resin tag formation, greater radiopacity, antibacterial effect, and improved DC (observed for some fillers). Most of the studies dealing with the subject area are in vitro. Future in situ and in vivo studies are recommended to positively attest to the results of laboratory findings.
Highlights
Dental resin composites (DRCs) are polymeric materials used for restorative and aesthetic repairs [1]
Jun et al revealed that the addition of copper doped Bioactive Glass (BG) fillers in the adhesive resulted in the remineralization of the adhesive–dentin interface [22]
The positive impact on the properties observed for the addition of Graphene Oxide (GO) fillers in the Dentin adhesives (DAs) could be attributed to their hydrophilic nature that could attract calcium ions to form HA, promoting remineralization of the adhesive–dentin interface [57]
Summary
Dental resin composites (DRCs) are polymeric materials used for restorative and aesthetic repairs [1]. The most common reasons for the failure of DRCs include polymerization shrinkage, microleakage, and consequent secondary caries development [6]. Since their introduction in the market six decades ago, various modifications have been made in the composition of their polymer matrix and adhesive component in order to improve their longevity [1]. ThVeamriiocruos-psotrousditiieess(chreaavteedpbryoeptcohsinegd) itnhtahet ttohoethasdtrvuactnurceetsoidnevpeololpyrmeseinr tcahgse[m8].istry and incorporation T[9oh]f.esVbeaitroaioaguscstfoisvrtumediafiesmllheeacrvhpeanapirrcotapilcoinlseteesdrlhtohcaakvtintehgeabauedtgwvmaeneecnensthtieendapdothlhyeemsiveperrcaohnpedmetrhistetiretyosoaonthdfsDitnrcuAocrtsupro[e1- 0,11] These properties rtahtioant oafrbeioimactpivreofvilleerdpbarytictlhesehianvceoarupgmoreantteidontheofprboipoeratcietsivofeDinAos r[1g0a,1n1]i.cTfihelslee rs in the adhesives are psruopmermtieas rthizateadreaimndpropvreedsbeynttheedinicnorFpoigrautiroen o1f.
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