PMID- 27357323
OWN - NLM
STAT- MEDLINE
DCOM- 20180326
LR  - 20181202
IS  - 2049-3169 (Electronic)
IS  - 1674-2818 (Print)
IS  - 1674-2818 (Linking)
VI  - 8
IP  - 2
DP  - 2016 Jun 30
TI  - The effect of platform switching on the levels of metal ion release from 
      different implant-abutment couples.
PG  - 117-25
LID - 10.1038/ijos.2016.5 [doi]
AB  - 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 (P<0.05). Titanium was the highest element to be 
      released regardless of abutment size or connection (P<0.05). 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.
FAU - Alrabeah, Ghada O
AU  - Alrabeah GO
AD  - Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 
      University College London, London, UK.
AD  - Prosthodontic Unit, Department of Restorative Dentistry, UCL Eastman Dental 
      Institute, University College London, London, UK.
FAU - Knowles, Jonathan C
AU  - Knowles JC
AD  - Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 
      University College London, London, UK.
FAU - Petridis, Haralampos
AU  - Petridis H
AUID- ORCID: 0000-0003-4593-1127
AD  - Prosthodontic Unit, Department of Restorative Dentistry, UCL Eastman Dental 
      Institute, University College London, London, UK.
LA  - eng
PT  - Journal Article
DEP - 20160630
PL  - India
TA  - Int J Oral Sci
JT  - International journal of oral science
JID - 101504351
RN  - 0 (Chromium Alloys)
RN  - 0 (Dental Alloys)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Chromium Alloys
MH  - Corrosion
MH  - *Dental Alloys
MH  - *Dental Implant-Abutment Design
MH  - Materials Testing
MH  - Surface Properties
MH  - Titanium
PMC - PMC4932776
EDAT- 2016/07/01 06:00
MHDA- 2018/03/27 06:00
PMCR- 2016/06/01
CRDT- 2016/07/01 06:00
PHST- 2016/02/05 00:00 [accepted]
PHST- 2016/07/01 06:00 [entrez]
PHST- 2016/07/01 06:00 [pubmed]
PHST- 2018/03/27 06:00 [medline]
PHST- 2016/06/01 00:00 [pmc-release]
AID - ijos20165 [pii]
AID - 10.1038/ijos.2016.5 [doi]
PST - epublish
SO  - Int J Oral Sci. 2016 Jun 30;8(2):117-25. doi: 10.1038/ijos.2016.5.