Related Experiment Video
Updated: Jul 16, 2026

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
Published on: January 17, 2017
A clinical comparison of bracket bond failures in association with direct and indirect bonding
S Thiyagarajah1, D J Spary, W P Rock
1Department of Orthodontics, School of Dentistry, Birmingham, UK.
Objective:
To compare bond failure rates between direct and indirect techniques for bonding orthodontic brackets.
Design:
A two-centre single blinded prospective randomized controlled clinical trial.
Materials And Methods:
This study was undertaken at the Birmingham Dental Hospital and Good Hope Hospital, Sutton Coldfield. Thirty-three subjects meeting the inclusion criteria were selected from orthodontic waiting lists and assigned to either of two study groups according to a split-mouth study design. The number and site of bracket failures between tooth types was recorded over 1 year. Statistical analysis was carried out using chi-square tests.
Results:
Brackets were lost from 14 of the 553 teeth bonded, giving an overall bond failure rate of 2.5%. There were no significant differences in bond failures between direct and indirect bonding or in the tooth types of the failures.
Conclusions:
There was no significant difference in the bond failure rates between direct and indirect bonding.
More Related Videos
05:26Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
Published on: October 19, 2022
07:42Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Related Concept Videos
Bonding in Metals
Valence Bond Theory
Chemical Bonds
Atoms participate in a chemical bond formation to acquire a completed valence-shell electron configuration similar to that of the noble gas nearest to it in atomic number. Ionic, covalent, and metallic bonds are some of the important types of chemical bonds. Bond energy and bond length determine the strength of a chemical bond.
Types of Chemical Bonds
An ionic bond is formed due to electrostatic attraction between cations and anions. Often, the ions are formed by the transfer of electrons from...
Brick Masonry
For thicker walls, multiple wythes are bonded together using...
Bonding and Strength of Aggregate
Microcracking in Concrete