Dentonics Light-Cure Cavity Liner · 4 × 1.5 g syringes with 20 tips

Calcium hydroxide has long been the most widely used liner, and conventional calcium hydroxide liners have a low elastic modulus, low compressive strength and high solubility. Light-curable calcium hydroxide cements made with methacrylate monomers were developed for that reason, and they give a controlled working time, low solubility in acid and their full mechanical properties as soon as they are cured. When resin-containing materials are used in deep cavities, unpolymerised monomers can diffuse into the pulp tissue through the dentinal tubules.

Glass ionomer is a cement, luting or restorative agent made of an acid-soluble glass, polyacrylic acid and water that sets by an acid-base reaction. Glass ionomers are traditionally classified into four types by what they are used for, and the lining and base cements are Type III.

Cavity varnish is a combination of copal resin or other synthetic resins dissolved in an organic solvent. Zinc oxide-eugenol is listed by the FDA as a base cement and as a temporary tooth filling, and as a material applied to a tooth to protect the pulp.

Standard: ISO 9917-1 covers acid-base dental cements for permanent cementation, lining and restoration, and sets its limits according to whether the cement is meant as a luting agent, a base or liner, a restorative material or a pit and fissure sealing cement. Strength: the ADA standard for dental cements sets a minimum compressive strength of 50 MPa for luting, base and lining cements, and 100 MPa for restorations.

Particle size: smaller glass particles of about 15 microns serve as cements and larger ones of about 50 microns as restoratives, and film thickness and the powder-to-liquid ratio shape how a glass ionomer is classified and used.