Changes in Enamel Topography with the Contemperary Orthodontic Adhesives: A Pilot Study
Journal: Open Access Journal of Dental Sciences (OAJDS) (Vol.6, No. 2)Publication Date: 2021-04-14
Authors : Kamboj A Chopra SS Bali A Sharma A Lakhani P; Singh S;
Page : 1-8
Keywords : Transbond-XT; Transbond Plus SEP; Shear bond strength; Surface profilometry; Scanning electron microscope;
Abstract
Introduction: The self-etching primer system consists of etchant and primer dispersed in a single unit. The etching and priming are merged as a single step leading to fewer stages in bonding procedure and reduction in the number of steps that also reduces the chance of introduction of error, resulting in saving time for the clinician. It also results in smaller extent of enamel decalcification. Aim: To compare the Shear Bond Strength (SBS) of orthodontic molar tubes bonded with conventional acid etching system and Self-Etch Primers (SEP) and to study the surface appearance of enamel after debonding using surface profilometry and scanning electron microscope. Materials and Methods: The sample of this in-vitro study consisted of sixty caries free, intact extracted mandibular first molar teeth. A molar tube of 0.018” Roth prescription with micro etched base was bonded to each molar with two different bonding agents. All the molar tubes were subsequently tested for evaluation of shear bond strength with a universal testing machine. Surface Profilometry and Scanning Electron Microscope (SEM) was used to evaluate the effect of various light cure adhesives on the enamel morphology. Results: Transbond-XT exhibited the highest bond strength (22.6 MPa) closely followed by Transbond Plus SEP (19.6 MPa). However, Transbond-XT sample also had higher surface roughness and enamel alterations as compared to the Transbond Plus SEP. Conclusion: The adequate bond strength of self-etching primers, less deleterious effects on the enamel and less chair side time due to absence of acid etching makes it a good option for routine use in orthodontics.
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