scholarly journals EFFICIENCY THE HYGIENIC PROPERTIES OF CLASP DENTURES FOR PATIENTS WITH MISSING TEETH AND PERIODONTITIS

2018 ◽  
Vol 22 (6) ◽  
pp. 285-287
Author(s):  
Malkan Abdrashitova Amhadova ◽  
D. Yu Rahaeva ◽  
S. N Garazha ◽  
Z. S-S Hubaev ◽  
E. N Grishilova ◽  
...  
Keyword(s):  
Periodontal Diseases ◽  
Dental Materials ◽  
Structural Heterogeneity ◽  
The Body ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Hygienic Measures ◽  
Method Of Evaluation ◽  
Cobalt Chromium Alloy

The ability to penetrate conditionally pathogenic microflora from defects of the oral mucosa, from the surface of dentures and tissues of the prosthetic bed into the bloodstream is extremely dangerous for the body. The method of evaluation of colonization of opportunistic microflora in the experiment in-vitro alloy samples for the manufacture of clasp prostheses allows to objectively assess the level of bacterial contamination of dental materials and predict the effectiveness of hygienic measures removable dentures, which is especially important in patients with inflammatory periodontal diseases. Structural heterogeneity, low surface purity, polished cobalt-chromium alloy provide adhesion of microbial cells, thereby increasing the colonization of microflora on the surface of the material. A sample of the alloy based on gold, and cobalt-chromium alloy with electroplating showed identical results reduced sorption of microorganisms and good hygiene quality.

Hypoxia-like effect of Cobalt Chromium alloy micro particles on fibroblasts in vitro

2010 ◽  
Vol 28 (10) ◽  
pp. 1360-1367 ◽  
Author(s):  
Bernadette K. Madathil ◽  
Qingsong Lin ◽  
Choy-Leong Hew ◽  
Mira Mohanty
Keyword(s):  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Micro Particles ◽  
Cobalt Chromium Alloy

scholarly journals Biofilm Formation on Dental Implant Biomaterials by Staphylococcus aureus Strains Isolated from Patients with Cystic Fibrosis

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2030
Author(s):  
Anna Minkiewicz-Zochniak ◽  
Sylwia Jarzynka ◽  
Agnieszka Iwańska ◽  
Kamila Strom ◽  
Bartłomiej Iwańczyk ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Staphylococcus Aureus ◽  
Biofilm Formation ◽  
Bacterial Biofilm ◽  
Chromium Alloy ◽  
Systemic Diseases ◽  
Cobalt Chromium ◽  
Bacterial Aggregation ◽  
Cobalt Chromium Alloy

Implants made of ceramic and metallic elements, which are used in dentistry, may either promote or hinder the colonization and adhesion of bacteria to the surface of the biomaterial to varying degrees. The increased interest in the use of dental implants, especially in patients with chronic systemic diseases such as cystic fibrosis (CF), is caused by an increase in disease complications. In this study, we evaluated the differences in the in vitro biofilm formation on the surface of biomaterials commonly used in dentistry (Ti-6Al-4V, cobalt-chromium alloy (CoCr), and zirconia) by Staphylococcus aureus isolated from patients with CF. We demonstrated that S. aureus adherence and growth depends on the type of material used and its surface topography. Weaker bacterial biofilm formation was observed on zirconia surfaces compared to titanium and cobalt-chromium alloy surfaces. Moreover, scanning electron microscopy showed clear differences in bacterial aggregation, depending on the type of biomaterial used. Over the past several decades, S. aureus strains have developed several mechanisms of resistance, especially in patients on chronic antibiotic treatment such as CF. Therefore, the selection of an appropriate implant biomaterial with limited microorganism adhesion characteristics can affect the occurrence and progression of oral cavity infections, particularly in patients with chronic systemic diseases.

Covalently grafted BMP-7 peptide to reduce macrophage/monocyte activity: An in vitro study on cobalt chromium alloy

2012 ◽  
Vol 110 (3) ◽  
pp. 969-979 ◽  
Author(s):  
Hark Chuan Tan ◽  
Chye Khoon Poh ◽  
Yanli Cai ◽  
Min Thun Soe ◽  
Wilson Wang
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Cobalt Chromium Alloy

scholarly journals Rapid Prototyping forIn VitroKnee Rig Investigations of Prosthetized Knee Biomechanics: Comparison with Cobalt-Chromium Alloy Implant Material

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Christian Schröder ◽  
Arnd Steinbrück ◽  
Tatjana Müller ◽  
Matthias Woiczinski ◽  
Yan Chevalier ◽  
...  
Keyword(s):  
Sliding Friction ◽  
Pressure Sensors ◽  
Knee Kinematics ◽  
Knee Biomechanics ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Friction Coefficients ◽  
Retropatellar Pressure ◽  
Cobalt Chromium Alloy

Retropatellar complications after total knee arthroplasty (TKA) such as anterior knee pain and subluxations might be related to altered patellofemoral biomechanics, in particular to trochlear design and femorotibial joint positioning. A method was developed to test femorotibial and patellofemoral joint modifications separately with 3D-rapid prototyped components forin vitrotests, but material differences may further influence results. This pilot study aims at validating the use of prostheses made of photopolymerized rapid prototype material (RPM) by measuring the sliding friction with a ring-on-disc setup as well as knee kinematics and retropatellar pressure on a knee rig. Cobalt-chromium alloy (standard prosthesis material, SPM) prostheses served as validation standard. Friction coefficients between these materials and polytetrafluoroethylene (PTFE) were additionally tested as this latter material is commonly used to protect pressure sensors in experiments. No statistical differences were found between friction coefficients of both materials to PTFE. UHMWPE shows higher friction coefficient at low axial loads for RPM, a difference that disappears at higher load. No measurable statistical differences were found in knee kinematics and retropatellar pressure distribution. This suggests that using polymer prototypes may be a valid alternative to original components forin vitroTKA studies and future investigations on knee biomechanics.

Morpho-experimental substantiation of application of electroplating dentures for patients with missing teeth and periodontitis

2019 ◽  
Vol 1 (5) ◽  
pp. 5-7
Author(s):  
M. A. Amhadova ◽  
D. Yu. Rakhaeva ◽  
S. N. Garazha ◽  
Z. S. Hubaev ◽  
E. N. Grishilova ◽  
...  
Keyword(s):  
Periodontal Diseases ◽  
Long Term Results ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Missing Teeth ◽  
Orthopedic Treatment ◽  
Biological Advantage ◽  
Cobalt Chromium Alloy ◽  
Experimental Substantiation

The choice of material for the manufacture of prostheses in patients with inflammatory periodontal diseases is of particular relevance. When using plates from cobalt-chromium alloy with electroplating destructive changes in the tissues are less pronounced. In response to damage, aseptic serous inflammation develops. Granulation tissue is formed in the wound, healing occurs by primary tension and in a shorter time. The results of the study allow to predict that the use of electroplating will significantly improve the clinical efficiency of the use of clasp prostheses in patients with periodontal disease, as the gold-containing coating has the properties of bioinert, has a clinical and biological advantage in predicting the long-term results of orthopedic treatment.

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