Which technique is commonly used to attach buccal tubes to molar bands in orthodontics?

The technique commonly used to attach buccal tubes to molar bands in orthodontics is spot welding. This method is preferred due to its efficiency and the strength it provides to the bond between the buccal tube and the molar band. Spot welding involves using electrical current to heat the metal at the joint, which creates a strong fusion without the need for additional materials that could introduce complications or weaknesses in the connection.

This process is particularly suitable for orthodontic appliances where durability and resilience to forces during treatment are critical. Additionally, spot welding allows for precise positioning of the buccal tubes, ensuring optimal alignment for the orthodontic mechanics.

Other methods, such as soldering, might involve using a filler material and heating the joint, which can be time-consuming and may introduce excess material that could create complications. Glue bonding offers a different approach but may not provide the same degree of strength and durability under the mechanical forces faced during orthodontic treatment. Crimping, on the other hand, is used for secure fittings but does not achieve the same structural integrity as welding for attachments in this context.