Orthodontic Assistant Practice Exam

How can anterior plastic brackets be attached directly to teeth?

1. Using dental glue

2. By acid etch bonding

3. With a surgical adhesive

4. Using wire ligatures

The correct answer is: By acid etch bonding

The attachment of anterior plastic brackets directly to teeth is commonly accomplished through acid etch bonding. This method utilizes a special acidic solution to prepare the enamel surface of the tooth, creating a roughened texture that enhances the mechanical bond between the tooth and the adhesive used for the bracket. After etching, an adhesive resin is applied, bonding the bracket firmly in place. This technique is favored in orthodontics because it provides a strong and reliable attachment while minimizing the risk of damage to the enamel compared to other methods. The etching process essentially increases the surface area for the bonding material to adhere to, allowing for an effective and durable connection essential during orthodontic treatment. In contrast, the other choices would not achieve the same level of effectiveness or appropriateness for bracket attachment. For instance, wire ligatures are primarily used to hold archwires in place, not for direct attachment of brackets to teeth. Dental glue and surgical adhesive are not intended for orthodontic applications and may not provide the necessary bond strength or biocompatibility required for long-term orthodontic treatment.