title: Corrosion Analysis of an Experimental Noble Alloy on Commercially Pure Titanium Dental Implants.
abstract: OBJECTIVE
  To determine whether theNoble Bond®Argen®alloy was electrochemically suitable for the manufacturing of prosthetic superstructures over commercially pure titanium (c.p. Ti) implants. Also, the electrolytic corrosion effects over three types of materials used on prosthetic suprastructures that were coupled with titanium implants were analysed:Noble Bond®(Argen®),Argelite 76sf +®(Argen®), and commercially pure titanium.
  
  
  METHODS
  15 samples were studied, consisting in 1 abutment and one c.p. titanium implant each. They were divided into three groups, namely:Control group:five c.p Titanium abutments (B&W®),Test group 1:fiveNoble Bond®(Argen®) cast abutments and,Test group 2:fiveArgelite 76sf +®(Argen®) abutments. In order to observe the corrosion effects, the surface topography was imaged using a confocal microscope. Thus, three metric parameters (Sa:Arithmetical mean height of the surface.Sp:Maximum height of peaks.Sv:Maximum height of valleys.), were measured at three different areas: abutment neck, implant neck and implant body. The samples were immersed in artificial saliva for 3 months, after which the procedure was repeated. The metric parameters were compared by statistical analysis.
  
  
  RESULTS
  The analysis of the Sa at the level of theimplant neck, abutment neck and implant body,showed no statistically significant differences on combining c.p. Ti implants with the three studied alloys. The Sp showed no statistically significant differences between the three alloys. The Sv showed no statistically significant differences between the three alloys.
  
  
  CONCLUSIONS
  The effects of electrogalvanic corrosion on each of the materials used when they were in contact with c.p. Ti showed no statistically significant differences.
authors.affiliation: Prosthodontics, Private Practice, Santa Rosa, La Pampa, Argentina.
authors.forename: Manuel Alberto
authors.initials: MA
authors.lastname: Bortagaray
authors.affiliation: Career Specialization in Oral Implantology, Faculty of Medicine, Catholic University of Córdoba,Argentina.
authors.forename: Claudio Arturo Antonio
authors.initials: CA
authors.lastname: Ibañez
authors.affiliation: Oral Implantology, Career Specialization in Oral Implantology, Faculty of Medicine, Catholic University of Córdoba,Argentina.
authors.forename: Maria Constanza
authors.initials: MC
authors.lastname: Ibañez
authors.affiliation: Dentistry, Career Specialization in Oral Implantology, Faculty of Medicine, Catholic University of Córdoba,Argentina.
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Ibañez
keywords: Dental implants; Galvanic corrosion; Noble alloys; Noble bond®; Suprastructure; Titanium