What lining can be used under a composite filling?

What lining can be used under a composite filling?

In our practice, we have traditionally used resin modified glass ionomer (RMGI) liner/bases for deep cavities and composite procedures. By their nature, RMGI liners are typically fluid materials that can adapt more readily to the internal aspects of a cavity preparation.

Can you use IRM under composite?

Related to microhardness test, IRM can be used safely underneath composite restorations or GI restorations.

Does resin bond to glass ionomer?

Resin-modified glass ionomers were first introduced in 1992. These combine an acid-base reaction of the traditional glass ionomer with a self-cure amineperoxide polymerization reaction. They also are easily bonded to resins and have higher strength properties comparable to conventional glass-ionomer cements.

Is glass ionomer a cavity liner?

Resin-Modified Glass Ionomers as Cavity Liners Resin-modified glass ionomers can also be used to line the dentin walls of a deep cavity. When used as a cavity liner, these materials provide thermal insulation.

Why are linings used under fillings?

Since the 19th century liners have often been placed in cavities in the teeth under the filling material. The liners are thought to protect the living pulp of the tooth from filling materials themselves and also from their potential to allow more heat or cold through than the natural tooth would.

What material can we not use under a composite restoration?

… Traditional base materials, such as zinc oxide-eugenol cements, have been contraindicated for composite restorations due to inhibition of resin polymerization by the phenolic hydrogen of eugenol.

Can Dycal be used under composite?

Further studies are necessary to suggest that Dycal can be used without any inhibitions under composite resin restorations, may be in vivo studies with long-term follow-up of the outcome are required.

Does composite bond to glass ionomer?

In the present study, resin-modified glass ionomer cement (Vitremer) showed the highest bond strength to composite resin. These results suggested that because this material exhibited a higher cohesive strength, the evaluation reflected higher real bond strength values at the composite resin/adhesive/GIC interface.

Does glass ionomer need bonding agent?

Glass ionomer cement does not require any binding agent when placed in cavities [110]. Glass ionomer cement also does not undergo any shrinkage or micro-leakage; these are chemically set by an acid base reaction. It also releases fluoride, which helps in preventing carious lesions.

What is glass ionomer liner?

These materials are dimensionally very stable, they bond to dentin, and release fluoride. They also reduce stress on the tooth and can inhibit microleakage. Glass-ionomer (GI) and RMGI liners are perhaps what many dentists envision first when they consider using a liner.

What’s the difference between liner and base?

Liners are defined as materials that are placed as thin (0.5 mm) coatings under a restoration. They are used to provide a barrier to chemical irritants and to reduce microleakage. In comparison, a base not only provides a barrier to chemical irritation, but can also provide thermal insulation.