Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins
Experimental adhesives containing co-doped metaloxide nanoparticles were demonstrated to display strong and long-term antibacterial properties against <i>Streptococcus mutans</i> biofilms. The present study represents an effort to characterize the shear-bond strength (SBS) and color stab...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/1/1 |
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| author | Qing Hong Alexandra C. Pierre-Bez Matheus Kury Mark E. Curtis Rochelle D. Hiers Fernando L. Esteban Florez John C. Mitchell |
| author_facet | Qing Hong Alexandra C. Pierre-Bez Matheus Kury Mark E. Curtis Rochelle D. Hiers Fernando L. Esteban Florez John C. Mitchell |
| author_sort | Qing Hong |
| collection | DOAJ |
| description | Experimental adhesives containing co-doped metaloxide nanoparticles were demonstrated to display strong and long-term antibacterial properties against <i>Streptococcus mutans</i> biofilms. The present study represents an effort to characterize the shear-bond strength (SBS) and color stability (CS) of these novel biomaterials. Experimental adhesives were obtained by dispersing nitrogen and fluorine co-doped titanium dioxide nanoparticles (NF_TiO<sub>2</sub>, 10%, 20% or 30%, <i>v</i>/<i>v</i>%) into OptiBond Solo Plus (OPTB). Dentin surfaces were wet-polished (600-Grit). Specimens (n = 5/group) of Tetric EvoCeram were fabricated and bonded using either OPTB or experimental (OPTB + NF_TiO<sub>2</sub>) adhesives. Specimens were stored in water (37 °C) for twenty-four hours (T1), three months (T2), and six months (T3). At T1, T2, or T3, specimens were removed from water storage and were tested for SBS. Disc-shaped specimens (<i>n</i> = 10/group; d = 6.0 mm, t = 0.5 mm) of adhesives investigated were fabricated and subjected to thermocycling (10,000 cycles, 5–55 °C, 15 s dwell time). Specimens’ colors were determined with a VITA Easyshade<sup>®</sup> V spectrophotometer (after every 1000 cycles). SBS data was analyzed using two-way ANOVA and post-hoc Tukey tests, while CS data was analyzed using one-way ANOVA and post-hoc Tukey tests (α = 0.05). Mean values of SBS ranged from 16.39 ± 4.20 MPa (OPTB + 30%NF_TiO<sub>2</sub>) to 19.11 ± 1.11 MPa (OPTB), from 12.99 ± 2.53 MPa (OPTB + 30% NF_TiO<sub>2</sub>) to 14.87 ± 2.02 (OPTB) and from 11.37 ± 1.89 (OPTB + 20% NF_TiO<sub>2</sub>) to 14.19 ± 2.24 (OPTB) after twenty-four hours, three months, and six months of water storage, respectively. Experimental materials had SBS values that were comparable (<i>p</i> > 0.05) to those from OPTB independently of nanoparticle concentration or time-point considered. Experimental materials with higher NF_TiO<sub>2</sub> concentrations had less intense color variations and were more color stable than OPTB even after 10,000 thermocycles. In combination, the results reported have demonstrated that experimental adhesives can establish strong and durable bonds to human dentin while displaying colors that are more stable, thereby suggesting that the antibacterial nanotechnology investigated can withstand the harsh conditions within the oral cavity without compromising the esthetic component of dental restorations. |
| first_indexed | 2024-04-11T00:38:09Z |
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| language | English |
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| spelling | doaj.art-77df6cb81dd8481f873fa693a1b07b162023-01-06T14:21:56ZengMDPI AGNanomaterials2079-49912022-12-01131110.3390/nano13010001Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive ResinsQing Hong0Alexandra C. Pierre-Bez1Matheus Kury2Mark E. Curtis3Rochelle D. Hiers4Fernando L. Esteban Florez5John C. Mitchell6College of Dental Medicine, Midwestern University, Glendale, AZ 85308, USACollege of Dental Medicine, Midwestern University, Glendale, AZ 85308, USADivision of Operative Dentistry, Department of Restorative Dentistry, Piracicaba School of Dentistry, University of Campinas, Piracicaba 13414-903, BrazilMewbourne School of Petroleum and Geological Engineering, University of Oklahoma, Norman, OK 73019, USADivision of Dental Biomaterials, Department of Restorative Sciences, College of Dentistry, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73117, USADivision of Dental Biomaterials, Department of Restorative Sciences, College of Dentistry, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73117, USACollege of Dental Medicine, Midwestern University, Glendale, AZ 85308, USAExperimental adhesives containing co-doped metaloxide nanoparticles were demonstrated to display strong and long-term antibacterial properties against <i>Streptococcus mutans</i> biofilms. The present study represents an effort to characterize the shear-bond strength (SBS) and color stability (CS) of these novel biomaterials. Experimental adhesives were obtained by dispersing nitrogen and fluorine co-doped titanium dioxide nanoparticles (NF_TiO<sub>2</sub>, 10%, 20% or 30%, <i>v</i>/<i>v</i>%) into OptiBond Solo Plus (OPTB). Dentin surfaces were wet-polished (600-Grit). Specimens (n = 5/group) of Tetric EvoCeram were fabricated and bonded using either OPTB or experimental (OPTB + NF_TiO<sub>2</sub>) adhesives. Specimens were stored in water (37 °C) for twenty-four hours (T1), three months (T2), and six months (T3). At T1, T2, or T3, specimens were removed from water storage and were tested for SBS. Disc-shaped specimens (<i>n</i> = 10/group; d = 6.0 mm, t = 0.5 mm) of adhesives investigated were fabricated and subjected to thermocycling (10,000 cycles, 5–55 °C, 15 s dwell time). Specimens’ colors were determined with a VITA Easyshade<sup>®</sup> V spectrophotometer (after every 1000 cycles). SBS data was analyzed using two-way ANOVA and post-hoc Tukey tests, while CS data was analyzed using one-way ANOVA and post-hoc Tukey tests (α = 0.05). Mean values of SBS ranged from 16.39 ± 4.20 MPa (OPTB + 30%NF_TiO<sub>2</sub>) to 19.11 ± 1.11 MPa (OPTB), from 12.99 ± 2.53 MPa (OPTB + 30% NF_TiO<sub>2</sub>) to 14.87 ± 2.02 (OPTB) and from 11.37 ± 1.89 (OPTB + 20% NF_TiO<sub>2</sub>) to 14.19 ± 2.24 (OPTB) after twenty-four hours, three months, and six months of water storage, respectively. Experimental materials had SBS values that were comparable (<i>p</i> > 0.05) to those from OPTB independently of nanoparticle concentration or time-point considered. Experimental materials with higher NF_TiO<sub>2</sub> concentrations had less intense color variations and were more color stable than OPTB even after 10,000 thermocycles. In combination, the results reported have demonstrated that experimental adhesives can establish strong and durable bonds to human dentin while displaying colors that are more stable, thereby suggesting that the antibacterial nanotechnology investigated can withstand the harsh conditions within the oral cavity without compromising the esthetic component of dental restorations.https://www.mdpi.com/2079-4991/13/1/1metaloxide nanoparticlesantibacterialshear-bond strengthdental materialshuman dentin |
| spellingShingle | Qing Hong Alexandra C. Pierre-Bez Matheus Kury Mark E. Curtis Rochelle D. Hiers Fernando L. Esteban Florez John C. Mitchell Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins Nanomaterials metaloxide nanoparticles antibacterial shear-bond strength dental materials human dentin |
| title | Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins |
| title_full | Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins |
| title_fullStr | Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins |
| title_full_unstemmed | Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins |
| title_short | Shear Bond Strength and Color Stability of Novel Antibacterial Nanofilled Dental Adhesive Resins |
| title_sort | shear bond strength and color stability of novel antibacterial nanofilled dental adhesive resins |
| topic | metaloxide nanoparticles antibacterial shear-bond strength dental materials human dentin |
| url | https://www.mdpi.com/2079-4991/13/1/1 |
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