نتایج جستجو برای: sandblasting

تعداد نتایج: 493  

2015
Mu-Hyon Kim Kyeongsoon Park Kyung-Hee Choi Soo-Hong Kim Se Eun Kim Chang-Mo Jeong Jung-Bo Huh Mohamed N. Rahaman

The authors describe a new type of titanium (Ti) implant as a Modi-anodized (ANO) Ti implant, the surface of which was treated by sandblasting, acid etching (SLA), and anodized techniques. The aim of the present study was to evaluate the adhesion of MG-63 cells to Modi-ANO surface treated Ti in vitro and to investigate its osseointegration characteristics in vivo. Four different types of Ti imp...

2017
Jihun Kim Chanhee Park Jeong-Sub Lee Jungho Ahn Yoon Lee

The purpose of this study was to investigate the combined effect of mechanical and chemical treatments on the shear bond strength (SBS) of metal orthodontic brackets on zirconia restoration. The zirconia specimens were randomly divided into 12 groups (n = 10) according to three factors: AL (Al2O3) and CO (CoJet™) by sandblasting material; SIL (silane), ZPP (Zirconia Prime Plus), and SBU (Single...

Journal: :The International journal of oral & maxillofacial implants 2000
G Orsini B Assenza A Scarano M Piattelli A Piattelli

Initially, implant surface analyses were performed on 10 machined implants and on 10 sandblasted and acid-etched implants. Subsequently, sandblasted and acid-etched implant cytotoxicity (using L929 mouse fibroblasts), morphologic differences between cells (osteoblast-like cells MG63) adhering to the machined implant surfaces, and cell anchorage to sandblasted and acid-etched implant surfaces we...

Journal: :European journal of orthodontics 1999
C D Johnston P F McSherry

This study evaluated the effect of sandblasting foil mesh molar tube bases on the shear bond strength obtained when bonding to first molar teeth. Fifty-two recently extracted first molar teeth were etched with 35 per cent phosphoric acid gel for 30 seconds. Twenty-six sandblasted 'A' Company molar tube attachments and 26 non-sandblasted attachments were then bonded to the teeth using Phase II o...

Journal: :Arhiv za higijenu rada i toksikologiju 2013
Saziye Sezin Palabiyik Gözde Girgin Engin Tutkun Omer Hinc Yilmaz Terken Baydar

Workers in denim sandblasting are at a high risk of developing silicosis, an occupational lung disease caused by inhaling crystalline silica dust. The development and progress of silicosis is associated with the activation of the immune system and oxidative stress. In the former, interferon-gamma induces both neopterin release and the enzyme indoleamine [2, 3]-dioxygenase (IDO) in various cells...

2007
Yoshikazu Kobayashi Kenji Shirai

Surface texture is an important aspect in enhancing the aesthetic and tactile qualities of products as well as their mechanical properties. Surface texture is generated over a wide area to produce various characteristics such as patterns of tiles, annular rings, or skin. A rough texture on a product surface is generally obtained by etching or sandblasting, which produces a roughness of several ...

2015
Soghra Yassaei Hossein Agha Aghili Abdolrahim Davari Seyed Morteza Saadat Mostafavi

OBJECTIVES Providing reliable attachment between bracket base and zirconia surface is a prerequisite for exertion of orthodontic force. The purpose of the present study was to evaluate the effect of four zirconium surface treatment methods on shear bond strength (SBS) of orthodontic brackets. MATERIALS AND METHODS One block of zirconium was trimmed into four zirconium surfaces, which served a...

2012
Hasan Kaynar Yener Aydın Metin Akgün Atila Türkyılmaz Atilla Eroğlu

Amaç: Bu çalışmada kot taşlama işine bağlı silikozisin akut ve hızlandırılmış formlarında seyreden sekonder spontan pnömotoraks olguları bildirildi. Ça­lış­ma­ pla­nı:­Çalışmaya son beş yıl içerisinde taşlanmış kot pantolonu üreten küçük işyerlerinde çalışan ve silikozise bağlı sekonder spontan pnömotoraks gelişen yedi erkek hasta (ort. yaş 20.4 yıl; dağılım 17-23 yıl) dahil edildi. Pnömotoraks...

Journal: :The Eurasian journal of medicine 2010
Selim Doganay Hayrettin Gocmen Ali Yikilmaz Abdulhakim Coskun

OBJECTIVE Occupational lung disease due to silica dust is one of the most common work-related injuries. In denim sandblasting, workers are exposed to silica that may cause immediate mortality, especially in young people. The aim of this study was to assess the multidetector computed tomography (MDCT) findings of silicosis in denim sandblasters and to better define the role of MDCT in the early ...

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