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| 1 | The effect of platform switching on the levels of metal ion release from different implant–abutment couples显示文摘The improved peri-implant bone response demonstrated by platform switching may be the result of reduced amounts of metal ions released to the surrounding tissues. The aim of this study was to compare the levels of metal ions released from platform-matched and platform-switched implant–abutment couples as a result of accelerated corrosion. Thirty-six titanium alloy(Ti-6Al-4V) and cobalt–chrome alloy abutments were coupled with titanium cylinders forming either platform-switched or platform-matched groups(n = 6). In addition, 18 unconnected samples served as controls. The specimens were subjected to accelerated corrosion by static immersion in 1% lactic acid for 1 week. The amount of metal ions ion of each test tube was measured using inductively coupled plasma mass spectrometry. Scanning electron microscope(SEM) images and energy dispersive spectroscopy X-ray analyses were performed pre- and post-immersion to assess corrosion at the interface. The platform-matched groups demonstrated higher ion release for vanadium, aluminium, cobalt, chrome, and molybdenum compared with the platform-switched groups(Po0.05). Titanium was the highest element to be released regardless of abutment size or connection(Po0.05). SEM images showed pitting corrosion prominent on the outer borders of the implant and abutment platform surfaces. In conclusion, implant–abutment couples underwent an active corrosion process resulting in metal ions release into the surrounding environment. The highest amount of metal ions released was recorded for the platform-matched groups, suggesting that platform-switching concept has a positive effect in reducing the levels of metal ion release from the implant–abutment couples. | Ghada O Alrabeah Jonathan C Knowles Haralampos Petridis | 2016 | International Journal of Oral Science2016，8，2： | 5 |
| 2 | Nitric oxide synthases: structure, function and inhibition显示文摘 | Alderton W K Cooper C E Knowles R G | 2001 | Biochem J2001，357，3： | 2 |
| 3 | Insulin-like growth Factor- Ⅰ (IGF- Ⅰ ) and especially IGF- Ⅰ variants are anabolic in dexamethasone-treated rat显示文摘 | Tomas F M Knowles S E Owens P C | 1992 | Biochem J1992，282，： | 1 |
| 4 | Inhibition of fatty acid synthase induces Caspase-8-mediated tumor cell apoptosis by up-regulating DDIT4显示文摘 | Knowles LM Yang C Osterman A | 2008 | J Biol Chem2008，283，31： | 1 |
| 5 | Utilization of aliphatic compounds by acidophilic heterotrophic bacteria: The potential for bioremediation of acidic wastewaters contaminated with toxic organic compounds and heavy metals显示文摘 | Knowles C J | 2000 | FEMS Microbiology Letters2000，192，： | 1 |
| 6 | Age and size structure analysis of Engelmann spruce,population pine,Loadgepole,and Limber pine in cororado显示文摘 | Knowles P Grant M C | 1983 | Ecology1983，64，： | 1 |
| 7 | Hydroxy- apatite and gelatin composite foams processed via novel freeze drying and crosslinking for use as temporary hard tissue scaffolds显示文摘 | Hae-Won Kin Jonathan C Knowles Hyoun-Ee Kim | 2005 | J Biomed Mater RES Part A2005，72，2： | 1 |
| 8 | Visceral hypersensitivity in nonerosive reflux disease 显示文摘 | Knowles C H Aziz Q | 2008 | Gut2008，57，5： | 1 |
| 9 | Toxicity of pyrethroids and effect of synergists to larval and adult Helicoverpa zea, Spodoptera frugiperda,and Agrotis ipsilon (Lepidoptera: Noctuidae) 显示文摘 | USMANI K KNOWLES C | 2001 | J Econ Entomol2001，94，： | 1 |
| 10 | Reconstructing the origin and transmission dynamics of the 196768 foot-and-mouth disease epidemic in the United Kingdom显示文摘 | Wright C F Knowles N J Di Nardo A | 2013 | Infection Genetics and Evolution2013，20，： | 1 |
| 11 | Phylogenetic analysis of foot-and-mouth disease viruses isolated in Argentina显示文摘 | Konig G Blanco C Knowles N J | 2001 | Virus Genes2001，23，2： | 1 |
| 12 | Hydroxyapatite /poly (ε-caprolactone) composite coatings on hydroxyapatite porous bone scaffold for drug delivery显示文摘 | Kim Hae-Won Knowles Jonathan C Kim Hyoun-Ee | 2004 | Biomaterials2004，25，： | 1 |
| 13 | Nitric oxide synthases: structure, function and inhibition显示文摘 | Alderton W Cooper C Knowles R | 2001 | Biochem J2001，，357： | 1 |
| 14 | Penicillanic acid sulfone: interaction with RTEM β -Lactamase from aeasoherichia coli at different pH values显示文摘 | Kemal C Knowles JR | 1981 | Biochemistry1981，20，： | 1 |
| 15 | Abdominal surgery for chronic constipation显示文摘 | Lindsey I Knowles C | 2011 | Colorectal Dis2011，13，12： | 1 |
| 16 | Newborn screening for con- genital heart defects : a systematic review and cost-effectiveness analy- sis 显示文摘 | Knowles R Griebsch I Dezateux C | 2005 | Health Technol Assess2005，9，1： | 1 |
| 17 | Age and size structure analysis of Engelmann spruce,population pine,loaclgepale pine,and limber pine in Colorado显示文摘 | KNOWLES P GRANFT M C | 1983 | Ecology1983，64，： | 1 |
| 18 | Nitric oxide synthases:structure,function and inhibition显示文摘 | ALDERTON W K COOPER C E KNOWLES R G | 2001 | Biochem J2001，357，3： | 1 |
| 19 | Growth mechanism and cross-sectional structure of tetrahedral amorphous carbon thin films显示文摘 | Davis C A Amaratunga G A J Knowles K M | 1998 | Phys Rev Lett1998，80，15： | 1 |
| 20 | Molecular analysis of duck hepatitis virus type 1 indicates should be assigned to a new genus 显示文摘 | Tseng C H Knowles N J Tsai H J | 2006 | Virus Research2006，07，： | 1 |
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