Preparation and antimicrobial assay of ceramic brackets coated with TiO<sub>2</sub>thin films

Cao, Shuai; Wang, Ye; Cao, Lin; Wang, Yu; Lin, Bingpeng; Lan, Wei; Cao, Baocheng

doi:10.4041/kjod.2016.46.3.146

Cited by 17 publications

(13 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The exact expression of this field is still unknown. At least in the single-chain slip-spring model, the velocity of the TR slip-link drift is found to increase with time in an exponential form when approaching the arm-end,63 which can also be seen in the simulation results of the simplified single-chain model with bimodal CR spectrum (triangles) inFig. 11.…”

mentioning

confidence: 59%

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Cao

Wang

2016

Macromolecules

View full text Add to dashboard Cite

The constraint release (CR) effect in entangled branched polymers is generally described by the widely accepted Dynamic Tube Dilation (DTD) theory based on the tube model, which predicts the stress relaxation function reasonably well, but not the dielectric or arm end-to-end vector relaxation. The microscopic picture of entanglement dynamics even in the simple case of star polymers is still not fully resolved. In this * To whom correspondence should be addressed entanglements sitting on a target star arm, only those destroyed by the arm free end dominate the arm end-to-end vector relaxation, while the constraint release events produce an accelerated drift of the mean positions of these specific entanglements towards the arm-end, which is an essential mechanism for understanding the relaxation of star polymers in concentrated solutions or melts. Our findings call for an examination of the microscopic foundation of conventional DTD picture and inspire the development of quantitative theories with consideration of more microscopic details.

show abstract

mentioning

confidence: 59%

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Cao

Wang

2016

Macromolecules

View full text Add to dashboard Cite

show abstract

“…The most frequently isolated bacteria from the human oral cavity are the following strains: Lactobacillus acidophilus, Porphyromonas gingivalis, Aggregatibacter actinomycetemco-mitans and yeast Candida albicans [ 11 , 40 , 67 , 69 , 71 , 79 , 80 ]. Numerous investments have been carried out to create an antibacterial orthodontic adhesive system to protect the enamel demineralization at the junction.…”

Section: Resultsmentioning

confidence: 99%

“…Cao et al [ 69 ] performed a study of assessing antimicrobial adhesive properties of a thin film of nitrogen-doped TiO 2 NPs. Stainless steel orthodontic brackets were used as a basic material.…”

Section: Resultsmentioning

confidence: 99%

Functional Coatings for Orthodontic Archwires—A Review

et al. 2020

View full text Add to dashboard Cite

In this literature review, the current state-of-art of coatings for orthodontic archwires’ increasing antimicrobial and relevant mechanical properties, such as surface topography, friction or corrosion resistance, has been presented. There is a growing request for orthodontic appliances, therefore, most researchers focus on innovative functional coatings to cover orthodontic archwires and brackets. Orthodontic appliances are exposed to the unfavorable oral cavity environment, consisting of saliva flow, food, temperature and appliance force. As a consequence, friction or biocorrosion processes may occur. This can affect the functionality of the orthodontic elements, causing changes in their microstructure, surface topography and mechanical properties. Furthermore, the material which the orthodontic archwire is made from is of particular importance in terms of the possible corrosion resistance. This is especially important for patients who are hypersensitive to metals, for example, nickel, which causes allergic reactions. In the literature, there are some studies, carried out in vitro and in vivo, mostly examining the antibacterial, antiadherent, mechanical and roughness properties of functional coatings. They are clinically acceptable but still some properties have to be studied and be developed for better results. In this paper the influence of additives such as nanoparticles of silver and nitrogen-doped TiO2 applied on orthodontic brackets by different methods on the antimicrobial properties was analyzed. Future improvement of coating techniques as well as modification of the archwire composition can reduce the release of nickel ions and eliminate friction and bacterial adhesion problems, thus accelerating treatment time.

show abstract

“…The anatase phase of TiO 2 nanoparticles has a proven photocatalytic activity and high stability 48) .…”

Section: Discussionmentioning

confidence: 99%

Synergistic effects of titanium dioxide and cellulose on the properties of glassionomer cement

Sun

Zhu

et al. 2019

Dental Materials Journal

Self Cite

View full text Add to dashboard Cite

In this study, we evaluate the effect of co-doping with TiO2 nanoparticles and sisal cellulose nanocrystals (CNCs) on the physical and biological properties of a conventional glass-ionomer cement (GIC). Test samples were characterized by scanning electron microscopy, and Fourier-transform infrared spectroscopy, and subjected to mechanical tests to evaluate the mechanical performances. Antimicrobial activity was evaluated against Candida albicans, and cytotoxicity experiments were conducted using L-929 cells. Unmodified GIC served as a control. Compared with the control group, the co-doped group demonstrated an increased compressive strength of 18.9%, an increased shear bond strength of 51%, the dissolution decreased by 18.3%, the volume wear rate was reduced by 5%. The antifungal effect against C. albicans was increased by 22%. In cytotoxicity experiments, the co-doped group had a slightly negative effect on the viability of L-929 cells.

show abstract

Preparation and antimicrobial assay of ceramic brackets coated with TiO₂thin films

Cited by 17 publications

References 45 publications

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Functional Coatings for Orthodontic Archwires—A Review

Synergistic effects of titanium dioxide and cellulose on the properties of glassionomer cement

Contact Info

Product

Resources

About

Preparation and antimicrobial assay of ceramic brackets coated with TiO2thin films

Cited by 17 publications

References 45 publications

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Microscopic Picture of Constraint Release Effects in Entangled Star Polymer Melts

Functional Coatings for Orthodontic Archwires—A Review

Synergistic effects of titanium dioxide and cellulose on the properties of glassionomer cement

Contact Info

Product

Resources

About

Preparation and antimicrobial assay of ceramic brackets coated with TiO₂thin films