Adhesion strength of orthodontic brackets to acrylic surfaces. A systematic review on in vitro studies.

Abstract

a b s t r a c t a r t i c l e i n f oObjectives: The aim of this study was to systematically review the available literature about in vitro orthodontic bond strength tests regarding bonding brackets to acrylic teeth. Methods:A comprehensive electronic database search with no date or language limits was conducted. Relevant studies were selected based on predefined criteria: in vitro investigation on the shear/tensile bond strength of brackets evaluated and expressed in megapascals and/or considering the adhesive remnant index; and studies with a clear explanation of the bonding technique/protocol, bonding materials and type of surface acrylic material used.Results: 2044 published articles were presented by the four databases. Of the studies collected from all the databases, 28 based on their title and 14 based on their abstract, only 10 studies fulfilled the selection criteria after being examined twice by the two reviewers.

Effect of Different Types of Adhesive Agents on Orthodontic Bracket Shear Bond Strength: A Cyclic Loading Study

“…The crosshead speed of the testing machine varies between orthodontic bond strength studies. When the orthodontic literature is reviewed, it can be seen that the crosshead speeds for bond strength tests generally vary from 0.5 to 5 mm/min [ 34 , 35 , 36 , 37 ]. However, Çiçek et al [ 23 ] examined the shear stroke numbers of brackets using a 300 mm/min crosshead speed in their 2020 study.…”

Bond Strength of Orthodontic Brackets to Temporary Crowns: In Vitro Effects of Surface Treatment

“…The type of surface treatment technique of the provisional crown material was a crucial factor influencing the shear bond strength values in our specimen [ 12 ]. Diamond burs and sandblasting were chosen because they had been clinically used for surface roughening in the past [ 11 ]. Orthodontists commonly use diamond burs for surface preparation on provisional crowns before bracket bonding [ 17 ].…”

“…Orthodontists are concerned about the bond strength between bracket adhesive and synthetic surfaces in clinical practice [ 11 ]. A weak bond of the brackets to provisional materials will lead to a high failure rate, with adverse consequences on the cost and efficiency of orthodontic therapy and on patient comfort [ 3 , 11 ].…”

“…Orthodontists are concerned about the bond strength between bracket adhesive and synthetic surfaces in clinical practice [ 11 ]. A weak bond of the brackets to provisional materials will lead to a high failure rate, with adverse consequences on the cost and efficiency of orthodontic therapy and on patient comfort [ 3 , 11 ]. This concern has been addressed by several methods, including surface treatment by mechanical or chemical approaches to roughen the surface and increase the surface area for bonding.…”

Evaluation and comparison of shear bond strength of all surface bonding primer with a conventional primer using two different materials of brackets bonded to different surfaces: An in vitro study

“…Mechanical alteration of porcelain surfaces to increase bond strength has been achieved by sandblasting [10] . The chemical strength between the type of surface and adhesive, as well as the mechanical strength provided by the surface treatment, should be considered as intervening factors in the deficit adhesion to provisional acrylic surfaces [11] . While choosing the bonding material, some factors should be taken into consideration: resistance, longevity and removal of excess without damaging tooth surface.…”