scholarly journals In vitro evaluation of visible light-activated titanium dioxide photocatalysis for in-office dental bleaching

2019 ◽  
Vol 38 (1) ◽  
pp. 68-74 ◽  
Author(s):  
Marla CUPPINI ◽  
Vicente Castelo Branco LEITUNE ◽  
Marcela de SOUZA ◽  
Annelise Kopp ALVES ◽  
Susana Maria Werner SAMUEL ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Dental Bleaching ◽  
Titanium Dioxide Photocatalysis

scholarly journals Osseointegrating and phase-oriented micro-arc-oxidized titanium dioxide bone implants

2021 ◽  
Vol 19 ◽  
pp. 228080002110068
Author(s):  
Hsien-Te Chen ◽  
Hsin-I Lin ◽  
Chi-Jen Chung ◽  
Chih-Hsin Tang ◽  
Ju-Liang He
Keyword(s):  
Titanium Dioxide ◽  
High Surface ◽  
Cell Activity ◽  
Active Surface ◽  
Rutile Phase ◽  
Hydroxyl Groups ◽  
Bone Implant ◽  
Implant System

Here, we present a bone implant system of phase-oriented titanium dioxide (TiO2) fabricated by the micro-arc oxidation method (MAO) on β-Ti to facilitate improved osseointegration. This (101) rutile-phase-dominant MAO TiO2 (R-TiO2) is biocompatible due to its high surface roughness, bone-mimetic structure, and preferential crystalline orientation. Furthermore, (101) R-TiO2 possesses active and abundant hydroxyl groups that play a significant role in enhancing hydroxyapatite formation and cell adhesion and promote cell activity leading to osseointegration. The implants had been elicited their favorable cellular behavior in vitro in the previous publications; in addition, they exhibit excellent shear strength and promote bone–implant contact, osteogenesis, and tissue formation in vivo. Hence, it can be concluded that this MAO R-TiO2 bone implant system provides a favorable active surface for efficient osseointegration and is suitable for clinical applications.

scholarly journals β-Cyclodextrin/Triclosan Complex-Grafted Methacrylated Glycol Chitosan Hydorgel by Photocrosslinking via Visible Light Irradiation for a Tissue Bio-Adhesive

2021 ◽  
Vol 22 (2) ◽  
pp. 700
Author(s):  
Young Jae Moon ◽  
Sun-Jung Yoon ◽  
Jeung-Hyun Koo ◽  
Yihyun Yoon ◽  
Hye Jun Byun ◽  
...  
Keyword(s):  
Wound Healing ◽  
Bacterial Infection ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Tissue Adhesive ◽  
Proton Nuclear Magnetic Resonance ◽  
Scanning Calorimetry ◽  
Glycol Chitosan

Accelerating wound healing with minimized bacterial infection has become a topic of interest in the development of the new generation of tissue bio-adhesives. In this study, we fabricated a hydrogel system (MGC-g-CD-ic-TCS) consisting of triclosan (TCS)-complexed beta-cyclodextrin (β-CD)-conjugated methacrylated glycol chitosan (MGC) as an antibacterial tissue adhesive. Proton nuclear magnetic resonance (1H NMR) and differential scanning calorimetry (DSC) results showed the inclusion complex formation between MGC-g-CD and TCS. The increase of storage modulus (G’) of MGC-g-CD-ic-TCS after visible light irradiation for 200 s indicated its hydrogelation. The swollen hydrogel in aqueous solution resulted in two release behaviors of an initial burst and sustained release. Importantly, in vitro and in vivo results indicated that MGC-g-CD-ic-TCS inhibited bacterial infection and improved wound healing, suggesting its high potential application as an antibacterial tissue bio-adhesive.

The Effect of Curcumin against In Vitro Adhesion of Implant Device-Associated Bacteria on Nanosized Titanium Dioxide

2013 ◽  
Vol 23 ◽  
pp. 83-90
Author(s):  
Seung Han Oh ◽  
In Young Na ◽  
Kyoung Hee Choi
Keyword(s):  
Titanium Dioxide ◽  
Bacterial Adhesion ◽  
Curcuma Longa ◽  
Human Tooth ◽  
Bacterial Strains ◽  
Associated Bacteria ◽  
Tooth Surfaces ◽  
Titanium Surfaces ◽  
Main Component

Although titanium dioxide (TiO2) is an implantable biomaterial with its antibacterial activity, infection on TiO2 surfaces remains a problem for medical settings. According to our previous studies, curcumin, the main component of turmeric (Curcuma longa), partially hindered the attachment of Streptococcus mutans to human tooth surfaces. Therefore, it was examined whether several implant device-associated bacteria were able to adhere to nanosized TiO2 surfaces. In addition, the effect of curcumin on the bacterial adhesion was investigated. Bacterial strains were cultured on pure Ti and TiO2 surfaces with various nanotube sizes in the absence or presence of curcumin and observed by scanning electron microscopy. Consequently, most bacteria adhered to Ti and TiO2 surfaces. However, curcumin increased the adhesion of bacteria including S. mutans. The results suggest that bacterial adhesion to implant titanium surfaces can be augmented via curcumin ingestion.

Removal of naphthalene from aqueous solutions by phosphorus doped-titanium dioxide coated on silica phosphoric acid under visible light

2021 ◽  
Vol 224 ◽  
pp. 187-196
Author(s):  
Bahman Banaei ◽  
Amir Hessam Hassani ◽  
Farhang Tirgir ◽  
Abdolmajid Fadaei ◽  
Seyed Mehdi Borghaei
Keyword(s):  
Titanium Dioxide ◽  
Phosphoric Acid ◽  
Aqueous Solutions ◽  
Visible Light ◽  
Doped Titanium Dioxide ◽  
Phosphorus Doped
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