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dental implant zno

Johan P Woelber, Petra Ratka-Krueger, Kirstin Vach, Eberhard Frisch
BACKGROUND: Long-term data on clinical outcomes of restorations attached to implants via zinc oxide (ZnO) cement have been sparse. PURPOSE: The purpose of this study was to retrospectively investigate decementation rates and peri-implant tissue status of implant-supported fixed restorations retained by ZnO cement. MATERIALS AND METHODS: Between 1989 and 2003, 63 partially edentulous patients received 93 implants. Of these, 27 patients received 36 screwed single crowns (SC) and served as a control (C group)...
August 12, 2015: Clinical Implant Dentistry and related Research
L Grenho, C L Salgado, M H Fernandes, F J Monteiro, M P Ferraz
Ceramic scaffolds are widely studied in the bone tissue engineering field due to their potential in regenerative medicine. However, adhesion of microorganisms on biomaterials with subsequent formation of antibiotic-resistant biofilms is a critical factor in implant-related infections. Therefore, new strategies are needed to address this problem. In the present study, three-dimensional and interconnected porous granules of nanostructured hydroxyapatite (nanoHA) incorporated with different amounts of zinc oxide (ZnO) nanoparticles were produced using a simple polymer sponge replication method...
August 7, 2015: Nanotechnology
Wenwen Liu, Penglei Su, Arthur Gonzales, Su Chen, Na Wang, Jinshu Wang, Hongyi Li, Zhenting Zhang, Thomas J Webster
To optimize mesenchymal stem cell differentiation and antibacterial properties of titanium (Ti), nano-sized zinc oxide (ZnO) particles with tunable concentrations were incorporated into TiO2 nanotubes (TNTs) using a facile hydrothermal strategy. It is revealed here for the first time that the TNTs incorporated with ZnO nanoparticles exhibited better biocompatibility compared with pure Ti samples (controls) and that the amount of ZnO (tailored by the concentration of Zn(NO3)2 in the precursor) introduced into TNTs played a crucial role on their osteogenic properties...
2015: International Journal of Nanomedicine
Guodong Jin, Huiliang Cao, Yuqin Qiao, Fanhao Meng, Hongqin Zhu, Xuanyong Liu
Titanium (Ti) and its alloys are widely used as orthopedic and dental implants. In this work, zinc (Zn) was implanted into oxalic acid etched titanium using plasma immersion ion implantation technology. Scanning electron microscopy and X-ray photoelectron spectroscopy were used to investigate the surface morphology and composition of Zn-implanted titanium. The results indicate that the depth profile of zinc in Zn-implanted titanium resembles a Gaussian distribution, and zinc exists in the form of ZnO at the surface whereas in the form of metallic Zn in the interior...
May 1, 2014: Colloids and Surfaces. B, Biointerfaces
Miguel A Vargas-Reus, Kaveh Memarzadeh, Jie Huang, Guogang G Ren, Robert P Allaker
Dental plaque accumulation may result in peri-implantitis, an inflammatory process causing loss of supporting bone that may lead to dental implant failure. The antimicrobial activities of six metal and metal oxide nanoparticles and two of their composites against bacterial pathogens associated with peri-implantitis were examined under anaerobic conditions. The activities of nanoparticles of silver (Ag), cuprous oxide (Cu(2)O), cupric oxide (CuO), zinc oxide (ZnO), titanium dioxide (TiO(2)), tungsten oxide (WO(3)), Ag+CuO composite and Ag+ZnO composite were assessed by minimum inhibitory (bacteriostatic) concentration (MIC) and minimum bactericidal concentration (MBC) determination against Prevotella intermedia, Porphyromonas gingivalis, Fusobacterium nucleatum and Aggregatibacter actinomycetemcomitans...
August 2012: International Journal of Antimicrobial Agents
H Hu, W Zhang, Y Qiao, X Jiang, X Liu, C Ding
In this work, zinc was incorporated into TiO2 coatings on titanium by plasma electrolytic oxidation to obtain the implant with good bacterial inhibition ability and bone-formability. The porous and nanostructured Zn-incorporated TiO2 coatings are built up from pores smaller than 5 μm and grains 20-100 nm in size, in which the element Zn exists as ZnO. The results obtained from the antibacterial studies suggest that the Zn-incorporated TiO2 coatings can greatly inhibit the growth of both Staphylococcus aureus and Escherichia coli, and the ability to inhibit bacteria can be improved by increasing the Zn content in the coatings...
February 2012: Acta Biomaterialia
Yin-Yu Chang, Chih-Ho Lai, Jui-Ting Hsu, Chih-Hsin Tang, Wan-Chuen Liao, Heng-Li Huang
Titanium (Ti)-based materials are widely used in biomedical implant components and are applied successfully in various types of bone-anchored reconstructions. However, in dental implants the Ti materials contact not only bone but also gingival tissues, and are partially exposed to the oral cavity that includes bacteria. This study used titania and silver (TiO(2)/Ag) compound coatings and zinc oxide (ZnO) films to enhance the antibacterial activity of the Ti-based implant. The hydrophobicity of each sample was examined by measuring the contact angle...
February 2012: Clinical Oral Investigations
M Ito
A possible bone substitute material for dental treatment was developed and tested. The material is composed of powdered hydroxyapatite (HA), ZnO and CaO, kneaded into a chitosan sol to make a quick-hardening paste. A composition was found which showed neutral pH, short setting time, and relatively high compressive strength. The use of such a paste for the treatment of periodontal defects or the augmentation of edentulous alveolar ridges may alleviate problems now associated with the implantation of particulate HA, such as early migration of particles and recontouring of the implant...
January 1991: Biomaterials
P A Scheidler, P K Bajpai
The objective of this investigation was to evaluate the suitability of zinc sulfate calcium phosphate ceramic composites as bone substitutes. ZSCAP ceramics were fabricated from stock powders of zinc sulfate, zinc oxide, calcium oxide, and phosphorous pentoxide in a ratio of 15:30:30:25 by weight of ZnSo4:ZnO:CaO:P2O5. The three oxides and zinc sulfate were mixed for 10 minutes in a blender and then calcined in a crucible at 650 degrees C for 24 hours. The calcined powder was ground in a ball mill for 0.5 hours and separated into particle sizes of 38-45, 45-63, and 65-75 microns by an automatic siever and shaker...
1992: Biomedical Sciences Instrumentation
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