conventional glass ionomer is a tooth-colored dental material used to repair teeth and protect tooth surfaces. It is made by mixing a glass powder with an acidic liquid, forming a set (hardened) material in the mouth. It is commonly used for small restorations (fillings), linings/bases under other materials, and some types of cementation. It is often chosen when fluoride release and bonding to tooth structure are desirable.

mechanical exposure is an opening into the dental pulp (the tooth’s nerve and blood supply) caused by instrumentation or trauma rather than decay. It most commonly refers to an iatrogenic pulp exposure that occurs during cavity preparation, crown preparation, or removal of an old restoration. In simple terms, it means the pulp chamber was “accidentally uncovered” while working on the tooth. It is discussed in restorative dentistry and endodontics because the next steps focus on keeping the tooth sealed and healthy.

carious exposure means the tooth’s pulp (“nerve” and blood supply) becomes exposed because a cavity (dental caries) has progressed deeply into the tooth. It is most commonly identified during cavity removal or when a cavity breaks into the pulp chamber. Dentists use the term carious exposure to describe a specific clinical finding that can affect treatment planning and prognosis. In simple terms, it is “a cavity that has reached the tooth’s living center.”

pulp exposure is when the dental pulp (the tooth’s inner “nerve and blood supply” tissue) becomes open to the mouth. pulp exposure can happen from tooth decay, dental procedures, or trauma. pulp exposure is discussed in restorative dentistry and endodontics because the pulp needs protection from bacteria and irritation. pulp exposure is commonly identified during cavity preparation, after a fracture, or when a deep filling is removed.

pulpotomy (vital pulp therapy) is a dental procedure that treats an inflamed or exposed tooth nerve (the pulp) while keeping the remaining pulp alive. It removes the affected pulp tissue in the crown of the tooth and places a protective material over the healthy pulp below. It is commonly used in children’s baby teeth and, in selected situations, in permanent teeth. The goal is to preserve the tooth and reduce the need for more extensive treatment.

direct pulp capping is a dental procedure used when the tooth’s pulp is directly exposed. The pulp is the soft tissue inside the tooth that contains nerves and blood vessels. A protective material is placed over the exposure to help the pulp stay healthy and sealed. It is most commonly used during cavity treatment or after an accidental (mechanical) exposure in restorative work.

indirect pulp capping is a conservative dental procedure used when a cavity is close to the tooth’s pulp (the nerve and blood supply) but the pulp is not exposed. It involves leaving a thin layer of affected dentin in place, then sealing it under a protective material and a final restoration. It is commonly used in deep cavities to reduce the chance of exposing the pulp during decay removal. The goal is to keep the tooth vital (alive) while restoring function and comfort.

pulp protection is the use of materials and techniques to shield the tooth’s pulp during or after dental treatment. The pulp is the soft living tissue inside a tooth that contains nerves and blood vessels. pulp protection is commonly used when treating cavities, placing fillings, or repairing teeth close to the pulp. Its goal is to help the tooth tolerate a restoration by reducing irritation and improving the seal.

cavity varnish is a thin, paint-on resin coating applied to the walls of a prepared tooth cavity before a restoration is placed. It is most commonly used as a protective seal under certain fillings to reduce fluid movement and irritation at the dentin surface. In modern practice, it may be used selectively because many restorations rely on adhesive bonding systems instead. It is different from fluoride varnish, which is applied to tooth surfaces to help prevent cavities.

An RMGI liner is a thin layer of resin-modified glass ionomer placed inside a tooth before a filling. It is commonly used under composite (tooth-colored) restorations and sometimes under other restorative materials. It helps protect and seal the dentin (the sensitive layer under enamel) during restorative care. It is typically applied in small amounts as a liner, not as the main filling material.