When using composite resin for cementation, how should the tooth surface be prepared?

The correct approach to preparing the tooth surface when using composite resin for cementation is to ensure it is free of all plaque and debris. This step is crucial because any remaining plaque, debris, or contaminants can interfere with the bond between the composite resin and the tooth structure. A clean surface promotes optimal adhesion, which is vital for the durability and effectiveness of the cementation.

In addition to being clean, the preparation may also include etching and bonding agents specific to composite materials, which can further enhance the bonding process. However, the primary focus should be on eliminating any substances that could disrupt the sealing of the composite to the tooth.

Other options, such as coating the surface with fluoride varnish or spraying it with water, do not facilitate the bonding process and may even hinder the effectiveness of the composite resin. Polishing the tooth surface to a high shine is not necessary prior to cementation as it can create a barrier and limit adhesion instead of improving it.