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Full-Text Articles in Dentistry
Accuracy And Consistency Of Preformed Orthodontic Arch Wires And The Effect Of Energy Drinks, Caroline Albea
Accuracy And Consistency Of Preformed Orthodontic Arch Wires And The Effect Of Energy Drinks, Caroline Albea
Student Theses, Dissertations and Capstones
Introduction: Selection of the proper arch wire requires a thorough knowledge and understanding of the mechanical properties of wires as well as the system being used. Even with careful selection, orthodontists may experience different results due to the inaccuracy of the stated wire dimensions. Previous studies by Melling et al. have shown nickel titanium, stainless steel, and chrome-cobalt arch wires to be thinner than their marketed values.1 However, the literature is lacking information regarding (1) accuracy of the currently available orthodontic arch wires and (2) the consistency of the arch wire size. Orthodontic wires are also exposed to various chemical …
Effect Of Surface Preparation On The Shear Bond Strength Of Orthodontic Brackets Bonded To Zirconia : An In-Vitro Study, Nathaniel Wieder
Effect Of Surface Preparation On The Shear Bond Strength Of Orthodontic Brackets Bonded To Zirconia : An In-Vitro Study, Nathaniel Wieder
Student Theses, Dissertations and Capstones
Objectives: The purpose of this in-vitro study was to evaluate the effects of three different surface preparation methods on the shear bond strength of orthodontic brackets bonded to zirconia and determine the most appropriate method. Methods: 45 zirconia and 30 leucite-reinforced porcelain mandibular premolar crowns were divided into 5 groups and received the following surface preparations: 37% phosphoric acid and non-hydrolyzed silane, 4% hydrofluoric acid and hydrolyzed silane, microetch with 50μ Al 2 O3 particles. A universal adhesive primer containing MDP was applied and the brackets were bonded with a bis-GMA composite resin. Shear bond strength (SBS) at bond …