wet bonding is a dental adhesive technique where dentin is kept slightly moist during bonding. It helps resin-based adhesives penetrate etched dentin and form a stronger seal. It is commonly used in composite (tooth-colored) fillings, repairs, and bonding procedures. The goal is reliable adhesion while reducing gaps at the tooth–restoration interface.

The oxygen inhibition layer is a thin, tacky surface film that can remain on light-cured dental resins after curing in air. It forms because oxygen in the air interferes with the final surface polymerization (hardening) of resin materials. It is most commonly discussed with composite fillings, bonding agents (adhesives), and resin-based sealants. Clinicians may preserve it between layers for bonding, or remove it when finishing the outer surface.

The air inhibition layer is a thin, sticky surface film that can remain on light-cured dental resins after curing. It happens because oxygen in the air interferes with the final part of resin polymerization at the surface. It is commonly discussed with composite fillings, bonding agents (adhesives), sealants, and some resin cements. Clinicians may use it intentionally between layers or remove it when a final hard, polished surface is needed.

A smear plug is a small, localized “plug” of resin material placed into a prepared tooth area. It is most commonly discussed in relation to composite (tooth-colored) restorations. The goal is to help the material adapt closely to the tooth surface in tight or irregular areas. The term is often informal and may be used differently by different clinicians.

smear layer is a thin film of microscopic debris that forms on tooth surfaces after they are cut or shaped. It is made from mineralized tooth particles, organic material, and sometimes bacteria pushed into the surface. It is most commonly discussed in fillings (bonding to enamel/dentin) and root canal treatment (cleaning inside canals). Clinicians usually manage smear layer by modifying it, penetrating it, or removing it, depending on the procedure.

The hybrid layer is a thin zone where dental adhesive resin mixes with the tooth’s dentin surface. It forms during bonding procedures used for many tooth-colored fillings and some crowns or veneers. In plain terms, it is the “microscopic glue layer” that helps a restoration stick to dentin. It is most commonly discussed in adhesive dentistry when bonding composite resin to dentin.

dentin bonding is the process of attaching a resin-based dental material to dentin (the tooth layer beneath enamel). It uses an adhesive system to help restorations and sealants stick to the tooth more predictably. It is commonly used under tooth-colored fillings (composites), in repairs, and in some indirect restorations. It also plays a role in reducing microleakage, which is the passage of fluids and bacteria at the tooth–restoration edge.

etch-and-rinse is a dental bonding approach that uses an acid gel to “etch” the tooth surface and then rinses it away before applying a bonding resin. It is commonly used when placing tooth-colored fillings (composite resin), sealants, and some types of repairs to existing restorations. The goal is to create a clean, micro-textured surface so the bond can lock onto enamel and dentin. You may also hear it called a “total-etch” technique, especially when both enamel and dentin are etched.

primer is a dental liquid used to help restorative materials stick to tooth structure or other dental surfaces. It is most commonly part of an “adhesive system” used with tooth-colored fillings (composites), sealants, and some repair procedures. In simple terms, primer “prepares” a surface so a bonding resin can hold more reliably. Dentists may also use specific primers for metals, ceramics, or zirconia when repairing or cementing restorations.

An adhesive system is a set of dental materials used to bond a restoration to a tooth. It commonly includes an etchant (acid gel), a primer, and an adhesive resin (bond). Dentists use it most often with tooth-colored fillings (composites), sealants, and some ceramic restorations. Its goal is to help restorative materials stick predictably to enamel and dentin.