Adhesive systems for CAD-CAM customised lingual orthodontic brackets: which one is better?

Authors

  • A Scribante Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia
  • MF Sfondrini Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia
  • D Fraticelli Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia
  • M Malfatto Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia
  • P Gandini Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia

DOI:

https://doi.org/10.23804/ejpd.2017.18.03.04

Keywords:

Adhesive, Bond strength, CAD-CAM, Customised, Lingual bracket, Orthodontics

Abstract

AIM: Aesthetic orthodontic treatment demand is constantly increasing also for patients in adolescent age. New orthodontic protocols with CAD-CAM customised bracket bases have been introduced for lingual orthodontic therapy. The aim of the present study was to compare the shear bond strength (SBS) and Adhesive Remnant Index (ARI) scores of customised lingual brackets bonded with different adhesive systems. METHODS: Study design: Customised CAD-CAM lingual bracket bases were tested for shear bond strength and adhesive remnant index scores using three different adhesive systems. Sixty human permanent premolars were extracted for orthodontic reasons and embedded in resin blocks. Customised CAD-CAM lingual bracket bases were prepared and bonded using a pre-mix chemical cure adhesive (Transbond IDB), a chemical cure adhesive system (Maximum Cure) and a dual-cure self-adhesive resin cement (RelyX Unicem 2). All samples were tested in shear mode on a Universal Testing Machine. SBS and ARI scores were calculated. Statistics: Statistical analysis included ANOVA and Tukey tests for SBS and Chi squared for ARI Scores.