What is the primary purpose of a conditioner in dental procedures?

The primary purpose of a conditioner in dental procedures is to modify the smear layer and increase permeability. In dentistry, particularly during restorative procedures, the smear layer can form as a result of the mechanical action of cutting tooth structure with dental instruments. This layer can hinder the bonding of restorative materials to the tooth surface.

By using a conditioner, typically an acid etchant, the smear layer is disrupted and removed, allowing for better penetration of bonding agents and restorative materials into the underlying dentin and enamel. This action not only enhances the adhesion between the tooth structure and the restorative material but also improves the long-term success of the dental restoration by ensuring a stronger bond.

This process is crucial in maximizing the effectiveness of the bonding agents that are applied subsequently, enabling more durable and reliable dental work.