A 5th generation, single component, multi-use adhesive, which is hydrophilic and suitable for use on moist dentin (wet bonding technique).
The adhesive incorporates aspects of a primer and bonding resin in a single bottle designed to bond composites and compomers to dentin and enamel as well as treated amalgam, metal, and ceramic surfaces.
A dentin bonding agent can be defined as a thin layer of (usually unfilled) resin applied between the conditioned dentin and resin matrix of a composite. The adhesive promotes bonding between enamel or dentin and resin composite restorative material or resin cement.
A dentin bonding agent, also known as a dentin adhesive or dental adhesive, is a dental material used to bond restorative materials, such as composite resin or dental cement, to the dentin surface of a tooth. It creates a strong and durable bond, allowing for the successful placement of various dental restorations.
Here's a general overview of the components and application process of a dentin bonding agent:
Components: Dentin bonding agents typically consist of several components, including:

a. Primer: The primer is a hydrophilic solution that is applied to the etched dentin surface. It infiltrates the dentinal tubules, moistens the collagen fibers, and helps to create a stable bond.

b. Adhesive: The adhesive is a hydrophobic resin-based material that is applied over the primer. It forms a chemical bond with the dentin and provides the necessary strength and durability for the bond.
Acid etching: Prior to applying the bonding agent, the dentin surface is usually acid-etched with a mild acid, such as phosphoric acid. This etching process creates microscopic porosities in the dentin, increasing surface area and allowing for better adhesive penetration.
Application: The steps involved in applying a dentin bonding agent can vary depending on the specific product. Generally, the process involves the following:

a. Isolation: The tooth is isolated using a dental dam or a cotton roll to maintain a dry working environment.

b. Etching: The acid etchant is applied to the dentin surface for a specified time, usually around 15-30 seconds. It is then rinsed off and the tooth surface is dried.

c. Primer application: The primer is applied to the etched dentin surface. It is often gently agitated or rubbed in to ensure thorough coverage. The excess primer is then removed, leaving a thin layer on the dentin.

d. Adhesive application: The adhesive is applied over the primed dentin surface. It is carefully spread and thinned using an air syringe or gentle airflow to remove excess solvent and ensure an even layer.
Light curing: Once the adhesive is applied, it is light-cured using a dental curing light. The light activates the photo-initiators in the adhesive, initiating polymerization and creating a strong bond between the dentin and the restorative material.
Restorative placement: After the dentin bonding agent is cured, the restorative material, such as composite resin or dental cement, can be placed on top of it. The bonding agent acts as an intermediary layer, providing adhesion and retention for the restoration.
Dentin bonding agents are essential in modern restorative dentistry, as they improve the bond strength between the tooth and restorative materials, reduce post-operative sensitivity, and enhance the longevity and success of dental restorations. It's important to follow the manufacturer's instructions and consult with a dental professional for specific recommendations regarding the selection and application of a dentin bonding agent.