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Influence of Soft Drinks with Low pH on Different Ni-Ti Orthodontic Archwire Surface Patterns
Ábalos, C.; Paúl, A.; Mendoza, A.; Solano, E.; Palazon, C.; Gil Mur, Francisco Javier
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. BIBITE - Biomaterials, Biomecànica i Enginyeria de Teixits
The aim of this study was to determine the influence of soft drinks on the surface of Ni-Ti archwires and their corrosion behavior. Archwires with different patterns (smooth, scratch, dimple, and crack) were selected and characterized by scanning electron microscopy and laser confocal microscopy. Immersion tests were performed in artificial saliva (pH 6.7) with a soft drink with a pH of 2.5 for 28 days. The results showed an increase in the surface defects and/or roughness of the dimple, crack and scratch patterns with the immersion times, and a decrease in corrosion resistance. A relationship between the surface pattern and the extent of the corrosion in Ni-Ti archwires with soft drinks at low pH has been demonstrated. Pattern should be taken into account in future studies, and manufacturing processes that produce surface defects (especially cracks) should be avoided
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria dels materials
Nickel-titanium alloys
Níquel-titani -- Aliatges -- Biocompatibilitat
Attribution-NonCommercial-NoDerivs 3.0 Spain

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