Which technique is used to bond a bracket to a tooth?

The technique used to bond a bracket to a tooth is chemical adhesion. This process involves using bonding agents that create a strong bond at the molecular level between the bracket and the enamel of the tooth. Chemical adhesives typically consist of resins or glues that, when applied, fill in microscopic imperfections on the tooth surface, allowing the bracket to securely attach. This method is essential for orthodontic treatments, as it ensures that the brackets remain in place throughout the duration of treatment, allowing for effective movement of the teeth.

Mechanical retention, while relevant in orthodontics, refers to the physical interlocking of the bracket with the tooth surface rather than a chemical bond. Pressure bonding and thermal bonding are also not the primary methods for attaching brackets, as they do not create the same level of secure adhesion necessary for orthodontic devices. The chemical adhesion technique is particularly beneficial because it provides a durable and reliable bond that is critical for the effectiveness of orthodontic appliances.