کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1421408 986409 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nickel release from orthodontic retention wires—The action of mechanical loading and pH
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Nickel release from orthodontic retention wires—The action of mechanical loading and pH
چکیده انگلیسی

Nickel (Ni) is a potent sensitizer and may induce innate and adaptive immune responses. Ni is an important component of orthodontic appliances (8–50 wt%). Due to chemical and mechanical factors in the oral environment, Ni is released from these appliances. Retention wires are in situ for a long period of time.ObjectivesTo quantitatively evaluate the influence of mechanical loading and pH on the nickel release from orthodontic retention wires.MethodsFive different types of multi-stranded wires (Original Wildcat, Noninium, Lingual retainer, Dentaflex 3-s, Dentaflex 6-s), were submersed for 24 h in either 10 ml of distilled water or lactic acid, both submitted to cyclic loading in a 3-point bending test (0×, 1000×, 10,000×). The solutions were analyzed by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS), and the data was statistically analyzed (ANOVA, p < 0.05).ResultsMechanical loading has a strong effect on the Ni release from orthodontic retention wires, especially in distilled water. Acidity has more impact on Ni release when compared to mechanical loading. Manganese-steel “Ni-free” wires released quantifiable amounts of Ni due to trace elements of Ni within the wire.SignificanceAll investigated wires release considerable amounts of Ni to which exposure may have biological implications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dental Materials - Volume 28, Issue 5, May 2012, Pages 548–553
نویسندگان
, , , , ,