Effect of different finishing techniques for restorative materials on surface roughness and bacterial adhesion

Surface sealants are reported to ensure surface smoothness and improve the surface quality of composite restorations. These sealants should also reduce the bacterial adhesion on composite surfaces however, there is not much information regarding their performance on bulk-fill composite materials. The aim of this study was to evaluate the effect of surface sealant application on surface roughness and bacterial adhesion of various restorative materials. Disc-shaped samples were prepared from a compomer, a conventional composite and three bulk-fill composites. Specimens of each group were divided into two groups (n = 9): with/without surface sealant (Biscover LV, [BLV]). Surface roughness values were examined by profilometry and two samples of each group were examined for bacterial adhesion on a confocal laser scanning microscope (CLSM). Bacterial counts were calculated by both broth cultivation and microscopic images. Results were analyzed with one-way ANOVA and Bonferroni/Dunn tests. Following the BLV application, there was a decrease in the surface roughness values of all groups however, only Tetric N-Ceram Bulk and Beautifil-Bulk groups showed significantly smoother surfaces (p < 0.001). There were no significant differences among material groups without BLV application. Evaluating bacterial adhesion after BLV application, conventional composite had the lowest values among all followed by the compomer group. Beautifil-Bulk had significantly the highest bacterial adhesion (p < 0.05), followed by Tetric N-Ceram Bulk group. Without BLV application, there was no significant difference among bacterial adhesion values of groups (p > 0.05). CLSM images showed cell viability in groups. Bulk-fill composites showed higher bacterial adhesion than conventional composite and compomer materials. The surface sealant was found to be highly effective in lowering bacterial adhesion, but not so superior in smoothing the surfaces of restorative materials. So, surface sealants could be used on the restorations of patients with high caries risk.

Download Full-text

An investigation of the effect of scaling-induced surface roughness on bacterial adhesion in common fixed dental restorative materials

Journal of Prosthetic Dentistry ◽

10.1016/j.prosdent.2014.04.005 ◽

2014 ◽

Vol 112 (5) ◽

pp. 1265-1270 ◽

Cited By ~ 4

Author(s):

Matthew R. Checketts ◽

Ilser Turkyilmaz ◽

Neset Volkan Asar

Keyword(s):

Surface Roughness ◽

Bacterial Adhesion ◽

Dental Restorative Materials ◽

Restorative Materials ◽

Dental Restorative

Download Full-text

Adherence of Streptococcus mutans to Fiber-Reinforced Filling Composite and Conventional Restorative Materials

The Open Dentistry Journal ◽

10.2174/1874210600903010227 ◽

2009 ◽

Vol 3 (1) ◽

pp. 227-232 ◽

Cited By ~ 16

Author(s):

Lippo V.J Lassila ◽

Sufyan Garoushi ◽

Johanna Tanner ◽

Pekka K Vallittu ◽

Eva Söderling

Keyword(s):

Surface Roughness ◽

Streptococcus Mutans ◽

Polymer Matrix ◽

Bacterial Adhesion ◽

Glass Fibers ◽

Composite Resins ◽

Fiber Reinforced ◽

Fiber Reinforced Composite ◽

Reinforced Composite ◽

Restorative Materials

Objectives. The aim was to investigate the adhesion of Streptococcus mutans (S. mutans) to a short glass fibers reinforced semi-IPN polymer matrix composite resin. The effect of surface roughness on adhesion was also studied. For comparison, different commercial restorative materials were also evaluated. Materials and Methods. Experimental composite FC resin was prepared by mixing 22.5 wt% of short E-glass fibers, 22.5 wt% of IPN-resin and 55 wt% of silane treated silica fillers using high speed mixing machine. Three direct composite resins (Z250, Grandio and Nulite), resin-modified glass ionomers (Fuji II LC), amalgam (ANA 2000), fiber-reinforced composite (FRC) (everStick and Ribbond), and pre-fabricated ceramic filling insert (Cerana class 1) were tested in this study. Enamel and dentin were used as controls. The specimens (n=3/group) with or without saliva were incubated in a suspension of S. mutans allowing initial adhesion to occur. For the enumeration of cells on the disc surfaces as colony forming units (CFU) the vials with the microbe samples were thoroughly Vortex-treated and after serial dilutions grown anaerobically for 2 days at +37°C on Mitis salivarius agars (Difco) containing bacitracin. Bacterial adhesion was also evaluated by using scanning electron microscopy. Surface roughness (Ra) of the materials was also determined using a surface profilometer. All results were statistically analyzed with one-way analysis of variance (ANOVA). Results. Composite FC resin and other commercial restorative materials showed similar adhesion of S. mutans, while adhesion to dentin and enamel was significantly higher (p<0.05). Surface roughness had no effect on bacterial adhesion. Saliva coating significantly decreased the adhesion for all materials (p<0.05). Composite FC resin had a significantly higher Ra value than control groups (p<0.05). Conclusions. Short fiber-reinforced composite with semi-IPN polymer matrix revealed similar S. mutans adhesion than commercial restorative materials.

Download Full-text

Effect of different finishing techniques for restorative materials on surface roughness and bacterial adhesion

Journal of Prosthetic Dentistry ◽

10.1016/s0022-3913(10)60034-0 ◽

2010 ◽

Vol 103 (4) ◽

pp. 221-227 ◽

Cited By ~ 114

Author(s):

Filiz Aykent ◽

Isa Yondem ◽

Atilla G. Ozyesil ◽

Solen K. Gunal ◽

Mustafa C. Avunduk ◽

...

Keyword(s):

Surface Roughness ◽

Bacterial Adhesion ◽

Restorative Materials

Download Full-text

Effect of two different polishing systems on fluoride release, surface roughness and bacterial adhesion of newly developed restorative materials

Journal of Esthetic and Restorative Dentistry ◽

10.1111/jerd.12313 ◽

2017 ◽

Vol 29 (6) ◽

pp. 424-434 ◽

Cited By ~ 7

Author(s):

Gokcen Deniz Bayrak ◽

Nuket Sandalli ◽

Senem Selvi-Kuvvetli ◽

Nursen Topcuoglu ◽

Guven Kulekci

Keyword(s):

Surface Roughness ◽

Bacterial Adhesion ◽

Fluoride Release ◽

Restorative Materials

Download Full-text

Effect of different polishing techniques on surface roughness and bacterial adhesion of three glass ionomer-based restorative materials: In vitro study

Journal of Clinical and Experimental Dentistry ◽

10.4317/jced.56616 ◽

2020 ◽

pp. e620-e625

Author(s):

HS. Ismail

Keyword(s):

Surface Roughness ◽

Bacterial Adhesion ◽

In Vitro Study ◽

Vitro Study ◽

Glass Ionomer ◽

Restorative Materials

Download Full-text

Assessing the Functional Properties of TiZr Nanotubular Structures for Biomedical Applications, through Nano-Scratch Tests and Adhesion Force Maps

Molecules ◽

10.3390/molecules26040900 ◽

2021 ◽

Vol 26 (4) ◽

pp. 900

Author(s):

Maria Vardaki ◽

Aida Pantazi ◽

Ioana Demetrescu ◽

Marius Enachescu

Keyword(s):

Surface Roughness ◽

Functional Properties ◽

Bacterial Adhesion ◽

Biomedical Applications ◽

Adhesion Force ◽

Roughness Parameters ◽

Force Microscopy ◽

Atomic Force ◽

The Mean ◽

Scratch Tests

In this work we present the results of a functional properties assessment via Atomic Force Microscopy (AFM)-based surface morphology, surface roughness, nano-scratch tests and adhesion force maps of TiZr-based nanotubular structures. The nanostructures have been electrochemically prepared in a glycerin + 15 vol.% H2O + 0.2 M NH4F electrolyte. The AFM topography images confirmed the successful preparation of the nanotubular coatings. The Root Mean Square (RMS) and average (Ra) roughness parameters increased after anodizing, while the mean adhesion force value decreased. The prepared nanocoatings exhibited a smaller mean scratch hardness value compared to the un-coated TiZr. However, the mean hardness (H) values of the coatings highlight their potential in having reliable mechanical resistances, which along with the significant increase of the surface roughness parameters, which could help in improving the osseointegration, and also with the important decrease of the mean adhesion force, which could lead to a reduction in bacterial adhesion, are providing the nanostructures with a great potential to be used as a better alternative for Ti implants in dentistry.

Download Full-text

The behaviour of composites, glass ionomers and compomers in erosive conditions – in vitro study

Acta Medica Marisiensis ◽

10.2478/amma-2014-0042 ◽

2014 ◽

Vol 60 (5) ◽

pp. 200-203

Author(s):

Andreea Borş ◽

Cristina Molnar-Varlam ◽

Melinda Székely

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Erosive Wear ◽

In Vitro Study ◽

Vitro Study ◽

Initial Surface ◽

Dental Filling ◽

Filling Materials ◽

Restorative Materials

Abstract Objective: The aim of this in vitro study was to evaluate the influence of erosive conditions on the wear resistance of aesthetic direct restorative materials. Methods: Six dental filling materials were tested: two composites (Filtek Z550 and X-tra fil), two compomers (Dyract Extra and Twinky Star) and two glass ionomers (Ketac Molar and Fuji II LC). Twenty disks (10mm×2mm) of each material were prepared (n=120) and kept in artificial saliva at 37˚C for 24 hours. Specimens were cycled in acidic soft drink (Coca-Cola) 5×/day, for 5’, over 30 days. Initial surface roughness ISR (Ra-μm) and final surface roughness FSR were measured using a profilometer. The wear rate was calculated as difference of final minus the initial roughness (ΔSR=FSR-ISR). For statistical analysis t-test and one-way ANOVA test were used by GraphPad Prism version 5.03 statistical software. The level of significance was set at p<0.05. Results: The erosive wear rates (mean±SD, μm) after exposure to acidic beverage were: 0.30±0.03 (Ketac Molar), 0.28±0.04 (Fuji II LC), 0.27±0.00 (Filtek Z550), 0.23±0.01 (X-tra fil), 0.20±0.00 (Twinky Star) and 0.14±0.01 Dyract Extra, respectively. There were significant differences between the tested materials (p<0.05). Conclusions: Dental filling materials had different behaviour under the same erosive condition, however all investigated aesthetic restorative materials showed surface degradation. These findings suggest that erosive wear resistance of tooth coloured restoratives could influence their longevity in intraoral acidic conditions. Acknowledgements: The study was supported by the Internal Research Grant no. 5/30.01.2013 of the University of Medicine and Pharmacy of Tirgu Mureş.

Download Full-text