Enhancing the physical properties of acrylic resilient denture liner using graphene oxide nanosheets

Abstract

Resilient denture liners (RDLs) change their hardness in a short time. Hence, their usefulness is limited to the short term only. Therefore, this laboratory study investigated the influence of graphene oxide (GO) nanosheets incorporation on the longevity of a commercially available RDL material. An autopolymerizing acrylic-based RDL was selected for this purpose. The control group (G 0 ) was prepared as such according to the manufacturer's instructions.However, for the G 1 group, 0.1 wt/wt% of GO nanosheet was incorporated in powder of RDL. Similarly, G 2 group and G 3 group were the composites of 0.3 and 0.6 wt/wt% of the GO-resin matrix. A total of 60 disk-shaped samples were prepared, having three subgroups with 15 disks each (n = 15). Surface roughness, water contact angle, Shore A hardness, water sorption, and solubility parameters were evaluated using a two-way analysis of variance (p < .05). GO nanosheets facilitated in reducing the hardness of RDL without affecting the surface roughness and wettability properties. Additionally, statistically reduced water solubility and sorption values were observed in G 3 group, that is, 0.69 ± 0.25% and 0.93 ± 0.18%, respectively, compared to 1.17 ± 0.13% and 1.41 ± 0.18%, respectively, of the control group at the end of 14-day water immersion. The incorporation of GO nanosheets seems a viable option for the enhanced physical properties and clinical life of RDLs.

Graphene loaded into dental polymers as reinforcement of mechanical properties: A systematic review

“…Table 2 shows detailed information regarding the included studies. The studies included in this review evaluated polymers used in dentistry as Polymethylmethacrylate (PMMA) [20] , [21] , [22] , [23] , [24] , [38] , [39] , [40] , [41] and Poly-ether-ether-ketone (PEEK) [11] , [12] incorporated with graphene oxide (GO), [20] , [21] , [22] , [23] , [24] , [39] , [40] , [41] reduced graphene oxide (rGO) [38] and graphene nanoplatelets (GNP) [11] , [12] in concentrations ranging from 0.1 to 10 wt%.…”

“…Studies that incorporated graphene compounds into dental polymers to positively alter their mechanical properties [11] , [12] , [20] , [21] , [22] , [23] , [24] , [38] , [39] , [40] , [41] observed that, depending on the concentration and method of incorporation, these properties are negatively affected. [11] , [21] , [38] , [41] Thus, due to the versatility and graphene potential application in dentistry, this review evaluated which graphene compounds incorporated into dental polymers provide the increase in mechanical properties.…”

An Updated Review of Salivary pH Effects on Polymethyl Methacrylate (PMMA)-Based Removable Dental Prostheses

“…One of the common drawbacks of soft denture liners is water sorption and solubility, and it was found that soft linings exhibited high solubility in artificial saliva [23]. This issue is correlated with the changes in the structure, physical properties [52], and the dimensional stability of the materials that may cause swelling, distortion, change in color, increased Candida albicans growth, and reduced bond strength by causing tensions at the liner denture base interface [50].…”

Electron beam radiation constructed and improved bone repairing performance based on hierarchical thermoplastic polyurethane/graphene oxide/hydroxyapatite hot melt adhesive with high flow ductility

“…It facilitates cell adhesion, proliferation, and differentiation, thereby contributing to the regeneration of bone tissue. Meanwhile, the incorporation of GO into bone graft materials can enhance their mechanical strength and stability 24,25 . In addition, Kolanthai et al 26 found that the addition of GO could enhance the cross‐linking between the polymer matrix and the filler to increase the mechanical strength after γ‐ray radiation.…”