نتایج جستجو برای: cement utility

تعداد نتایج: 167686  

2017
Yu-Hao Chen Jui-Ming Sun Chih-Ju Chang Cheng-Ta Hsieh

Bone cement augmentation of pedicle screw is an important surgical procedure for osteoporotic vertebral collapse, preventing screw loosening, migration or back-out. Bone cement leakage may develop and mostly does not compress the peripheral tissue of the vertebral body including the spinal cord. However, to our best knowledge, bone cement leakage into the inferior vena cava during cement augmen...

2014
D. Tsamatsoulis

Cement is produced by co-grinding clinker, gypsum and other components defined in the Cement Standards like limestone, pozzolans, fly ash and slag. The grinding is usually performed in horizontal ball mills. Gypsum is typically the basic source of sulphates (SO3) in the cement. The effect of gypsum on the cement quality is critical and twofold. It affects two of the main properties of this prod...

Journal: :Pediatric dentistry 1999
T P Croll

Use of Vitremer Core Buildup/Restorative Cement (3M Dental Products Division) as a luting cement for orthodontic bands and space maintainers was described in 1994. For use as a luting agent, the restorative cement is mixed with a slightly lower powder liquid ratio so the blend is more fluid than one used for a dental restoration. A chief advantage of using Vitremer Restorative Cement for luting...

2014
Hao Ding Cun-Ju Zhao Xu Cui Yi-Fei Gu Wei-Tao Jia Mohamed N. Rahaman Yang Wang Wen-Hai Huang Chang-Qing Zhang

BACKGROUND A novel injectable cement composed of chitosan-bonded borate bioactive glass (BG) particles was evaluated as a carrier for local delivery of vancomycin in the treatment of osteomyelitis in a rabbit tibial model. MATERIALS AND METHODS The setting time, injectability, and compressive strength of the borate BG cement, and the release profile of vancomycin from the cement were measured...

2017
Jarrah Alzubi

Corresponding Author: Saeid Abu-Romman Department of Biotechnology, Faculty of Agricultural Technology, Al-Balqa’ Applied University, Al-Salt 19117, Jordan Tel: ++962 5 3532519; Fax: ++962 5 3530469. Email:[email protected] Abstract: Air pollution exerts detrimental effects on plant ecosystems and restricts agricultural productivity. Cement dust is considered to be one of the most harmful air...

2016
Nur Balci Umut Cakan Burak Aksu Oncu Akgul Nurver Ulger

BACKGROUND The purpose of this study was to compare the effects of selected cements, or their combination with titanium, on the growth of two periodontopathic bacteria: Prevotella intermedia (Pi) and Fusobacterium nucleatum (Fn). MATERIAL AND METHODS This study was comprised of several experimental groups: 1) Dental luting cements (glass ionomer cement, methacrylate-based resin cement, zinc-oxi...

2018
Dongkyoung Lee Sukhoon Pyo

This study successfully applied multi-mode laser cutting with the variation of the laser cutting speed to cement mortar for the first time. The effects of the amount of silica sand in the cement mortar on laser cutting are tested and analyzed. The kerf width and penetration depth of the specimens after laser cutting are investigated. As the laser cutting speed increases, the penetration depth d...

2017
Dennis Flanagan

Implant-supported dental prostheses can be retained by a screw or cement. Implant-supported fixed partial dentures have a passive fit. A passive fit means there is an internal gap between the abutment surface and the intaglio of the retainer to insure that there is no lateral pressure on the supporting implants or friction upon seating of the prosthesis. This gap is filled with cement for reten...

Journal: :Journal of biomedical materials research. Part A 2009
Hideo Kobayashi Takaaki Fujishiro Stephen M Belkoff Naomi Kobayashi A Simon Turner Howard B Seim Joseph Zitelli Monica Hawkins Thomas W Bauer

We investigated histological and compressive properties of a calcium phosphate bone cement (BoneSource (CPC); Stryker Orthopaedics, Mahwah, New Jersey) plus carboxymethyl cellulose (CMC) using a sheep vertebral bone void model. Bone voids were surgically created in L3 and L5 in each of 40 sheep, and the voids were filled with the cement. Histological and radiographic evaluations were performed ...

2015
De-Ye Song Xin-Zhan Mao Mu-liang Ding Jiang-Dong Ni

Objective. Aim to study how the content of alendronate affected shear strengths at bone-bone cement-metal interfaces. Methods. All samples were divided into 6 groups, G0-G5. On the 1st and 60th day after surgery, bone-bone cement interface shear strengths and bone densities were examined. Interface strengths of metal-bone cement specimens were studied before immersion and 4 weeks after immersio...

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