The effect of air abrasion on the retention of metallic brackets bonded to fluorosed enamel surface

Suma, S.; Anita, G.; Chandra Shekar, B. R.; Kallury, Amitabh
March 2012
Indian Journal of Dental Research;Mar/Apr2012, Vol. 23 Issue 2, p230
Academic Journal
Background: Bonding brackets to fluorosed enamel remains a clinical challenge and bracket failure at the compromised enamel interface is common. Objective: To check the effect of air abrasion on the retention of metallic brackets bonded to fluorosed enamel surface. Materials and Methods: Sixty freshly extracted human premolar teeth having moderate to severe dental fluorosis as per Dean's criteria were collected and divided into three groups of 20 each. The groups were treated as follows: In group I, acid etching was followed by bonding with Transbond XT®; in group II, sandblasting and acid etching was followed by bonding with Transbond XT®; and in group III, sandblasting and acid etching was followed by bonding with Enlight LC®. An Instron™ universal testing machine was used for determining the debonding force, and from this the shear bond strength was computed. The sample with highest shear bond strength from each group was selected for the scanning electron microscopy (SEM) study. The prepared specimens were examined under a JSM-840A scanning electron microscope (JEOL Ltd, Tokyo, Japan) operated at 20 kV. Photographs were taken at progressively higher magnifications of ×50, ×100, ×500, and ×1000 to view the enamel surface and the adhesive remaining on the enamel surface after debonding. The shear bond strengths of the groups were compared using the one-way ANOVA (analysis of variance) and Tukey post hoc test. The distribution of adhesive remnant index (ARI) score was compared using the Chi-square test. Results: The mean shear bond strength in group I was 10.36 MPa, with a standard deviation of 0.225. The corresponding values in group II and group III were 11.41±0.237 MPa and 11.39±0.201 Mpa, respectively. There was a statistically significant difference between the three groups in the mean shear bond strength values. Conclusion: Sandblasting followed by acid etching provides significantly higher bond strength values compared to acid etching alone, irrespective of the bonding material employed.


Related Articles

  • Avaliação Comparativa in vitro da Resistência à Força de Cisalhamento Apresentada pelo Bráquete Cerâmico InVu. Dutra, Graziele Alves Araújo; da Rocha, José Maurício; Fraga, Marcelo Reis; Vitral, Robert Willer Farinazzo // Pesquisa Brasileira em Odontopediatria e Clinica Integrada;2009, Vol. 9 Issue 2, p173 

    Objective: To assess in vitro the shear bond strength and the adhesive remnant index (ARI) in enamel of ceramic orthodontic brackets. Method: Sixty human premolars with brackets bonded to their buccal surfaces were fixed in PVC cylinders and were randomly assigned to 4 groups: Clarity (3M...

  • Evaluation of the debonding strength of orthodontic brackets using three different bonding systems. Valletta, R.; Prisco, D.; De Santis, R.; Ambrosio, L.; Martina, R. // European Journal of Orthodontics;Dec2007, Vol. 29 Issue 6, p571 

    The aim of this work was to investigate the stability of the bracket-adhesive-enamel interface, as a function of adhesive material and of debonding procedure, in order to assess which debonding technique is the least detrimental to the enamel. Ninety lower adult bovine incisors were selected and...

  • Bonding characteristics of a self-etching primer and precoated brackets: an in vitro study. Hirani, Sunil; Sherriff, Martyn // European Journal of Orthodontics;Aug2006, Vol. 28 Issue 4, p400 

    Little is known about the performance of Transbond� Plus Self-Etching Primer (TPSEP), especially when used with Adhesive Precoated Brackets� (APC 1 and APC 2). The aim of this study was to compare the shear bond and rebond strengths and failure sites of APC 1 and APC 2 with a...

  • Effect of moisture on dental enamel in the interaction of two orthodontic bonding systems. Pinheiro de Magalhães Bertoz, André; Tescaro Narcizo de Oliveira, Derly; Melleiro Gimenez, Carla Maria; Fraga Briso, André Luiz; Bertoz, Francisco Antonio; Almada Santos, Eduardo César // Dental Press Journal of Orthodontics;Jul/Aug2013, Vol. 18 Issue 4, p89 

    Objective: The purpose of this study was to assess by means of scanning electron microscopy (SEM) the remaining adhesive interface after debonding orthodontic attachments bonded to bovine teeth with the use of hydrophilic and hydrophobic primers under different dental substrate moisture...

  • Bacterial colonization associated with fixed orthodontic appliances. A scanning electron microscopy study. Sukontapatipark, Warat; El-Agroudi, Mohammad A.; Selliseth, Nils J.; Thunold, Kirsten; Selvig, Knut A. // European Journal of Orthodontics;Oct2001, Vol. 23 Issue 5, p475 

    This investigation was undertaken to assess bacterial plaque accumulation adjacent to orthodontic brackets. Experiments were carried out on 11 subjects who were scheduled for orthodontic treatment including extraction of two or four premolars. Metal brackets were bonded to the premolars to be...

  • Effects of Phosphoric Acid Pretreatment and Substitution of Bonding Resin on Bonding Effectiveness of Self-etching Systems to Enamel. Rotta, Marina; Bresciani, Priscila; Moura, Sandra Kiss; Grande, Rosa Helena Miranda; Hilgert, Leandro Augusto; Baratieri, Luz Narciso; Loguercio, Alessandro Dourado; Reis, Alessandra // Journal of Adhesive Dentistry;2007, Vol. 9 Issue 6, p537 

    Purpose: To examine the etching efficacy of three self-etching systems to unconditioned enamel and to phosphoric acid conditioned enamel using scanning electron microscopy (SEM), and to investigate the microtensile bond strength (µTBS) of three self-etching adhesives to unconditioned enamel...

  • Effect of Re-etching Oxalate-occluded Dentin and Enamel on Bonding Effectiveness of Etch-and-rinse Adhesives. Yousry, Mai Mahmoud // Journal of Adhesive Dentistry;2012, Vol. 14 Issue 1, p31 

    Purpose: To determine whether or not re-etching of oxalate-treated dentin and enamel increases microshear bond strength (µSBS) and improves hybridization. Materials and Methods: Two single-bottle etch-and-rinse adhesives, SingleBond (3M/ESPE) and OptiBond S (Kerr), were bonded to deep...

  • A New Solvent-free One-Step Self-Etch Adhesive: Bond Strength to Tooth Structures. Shirban, Farinaz; Khoroushi, Maryam; Shirban, Mohammadreza // Journal of Contemporary Dental Practice;Mar/Apr2013, Vol. 14 Issue 2, p269 

    Introduction: In recent years some new solvent-free dental adhesives have been marketed. This study evaluated bonding effectiveness of a new one-step solvent-free self-etch adhesive in comparison with a common two-step self-etch adhesive used as gold standard. Materials and methods: Flat enamel...

  • The Shear Bond Strength of Acetone and Ethanol-based Bonding Agents to Bleached Teeth. Montalvan, Ericka; Vaidyanathan, Tritala K.; Zia Shey; Janal, Malvin N.; Caceda, Jorge H. // Pediatric Dentistry;Nov/Dec2006, Vol. 28 Issue 6, p531 

    Purpose: The purpose of this in vitro study was to evaluate the: (1) shear bond strength (SBS) of acetone and ethanol-based bonding agents to composite resin 24 hours after being bleached with 35% hydrogen peroxide; and (2) interface morphology and mode of fracture (IMMF) between composite resin...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics