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.

Which base is under composite restoration?

A suitable base material for composite resin restorations: zinc oxide eugenol.

What materials can be used as a liner?

Varnish, calcium hydroxide, zinc phosphate, glass ionomer, and resin can be used as a liner.

Why is a lining used under a filling?

Dental cavity liners have historically been used to protect the pulp from the toxic effects of some dental restorative materials and to prevent the pain of thermal conductivity by placing an insulating layer between restorative material and the remaining tooth structure.

What is a base for a filling?

Common bases under dental fillings are glass ionomer cement and zinc phosphate cement. The purpose of the base is to insulate the tooth and protect it from temperature changes in the mouth. Both the dentist and patient can choose various materials to be used as the tooth filling.

TheraCal LC as a liner in a Class II resin based composite restoration

Can you use Dycal 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.

What is a cavity lining material?

A layer of material applied to a cavity preparation to protect the pulp of the tooth. It is usually a suspension of zinc phosphate or calcium hydroxide and is used to neutralize the acidity of the base or cement material.

Is Dycal a liner or base?

Dycal® Calcium Hydroxide Liner is a two-component, rigid-setting, self-curing material designed for use in direct and indirect pulp capping and as a protective liner under dental adhesives, varnishes, filling materials, cements, and other base materials.

What is the difference between base and liner?

Liners do not have the sufficient thickness, hardness, or strength to be used alone in a deep cavity, nor should they be used to achieve thermal protection or as a buildup material in a cavity preparation. In comparison, a base not only provides a barrier to chemical irritation, but can also provide thermal insulation.

What are liners and bases?

Bases and liners are 'sandwiched' between the cavity preparation and the restorative material of the operator's choice; they may be referred to as intermediary materials. Although the function of a base and a liner is pulpal protection, the way this is achieved varies depending on the properties of the materials.

What is a foam liner?

Foam liner is a general purpose liner, made of compressible polyethylene foam. These do not create a seal, and is often used for leak prevention.

What is a pulp liner?

Pulp & Poly

This liner is made of two layers of material: Pulp, which is a cardboard type material, which faces the cap and polyvinyl chloride (PVC), which faces the product. This liner is commonly found in our metal CT caps, and is generally suitable for solid or liquid food items such as jams and jellies.

What is considered the best pulp protection?

Calcium hydroxide remains the “gold standard” for direct pulp capping. It has the longest track record of clinical success, is the most cost-effective and is the likely effective component in MTA.

Can we use glass ionomer under composite?

Glass ionomer cement can be used as a restorative material in its own right or as a base for a composite resin overlay (sandwich restoration) where the remaining tooth structure is unsupported and requires a bonded composite to maintain its structural integrity.

Can you use Dycal under GIC?

CaOH under GIC is redundant and counterproductive. One is placing a hard compressive strength materiral (GIC) on a softer one (Dycal). The rate of reparative dentin is constant and is not determined by the use of Dycal.

Can calcium hydroxide be used under composite?

Studies have shown that calcium hydroxide “softens” under amalgam and resin-based composite restorations. The results are attributed to hydrolysis of the calcium hydroxide by fluid contamination from dentinal tubules and microleakage.

Which of the following is contraindicated beneath composite resins as liner or base?

# Which of the following is contraindicated beneath composite resins as liner/ base? The correct answer is B. Zinc oxide -eugenol. The advantages of ZOE cement are that it gives excellent seal, has a sedative effect on prepared sensitive teeth, cost-effectiveness, and ease of removal of cemented temporary restorations.

What are liners in dentistry?

Liners are materials that are placed as a thin coating (usually 0.5 mm) on the surface of a cavity preparation. Although they provide a barrier to chemical irritants, they are not used for thermal insulation or to add bulk to a cavity preparation.

Can you use Dycal and Vitrebond together?

Both studies demonstrated that the pulp–dentin complex response to Vitrebond and Dycal indicated acceptable biocompatibility of these materials and there are no statistically significant difference between calcium hydroxide and Resin-Modified Glass Ionomer.

When is calcium hydroxide used as a liner?

Calcium hydroxide liners are used for its bioinductive and antimicrobial activity. It should be only used in the deepest spots in the cavity where the RDT is ≤0.5 mm. The placement of calcium hydroxide should be followed by a layer of RMGI to protect it from its drawbacks.

Is Dycal the same as calcium hydroxide?

Dycal is a self-set rigid dental cement based on calcium hydroxide. It is indicated for both direct and indirect pulp coating.

Can you use IRM under composite?

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

What is Copalite used for?

Copalite Varnish is applied as an insulating layer under gold and amalgam restorations. Proprietary solvents in the varnish have antimicrobial and antiviral properties. Copalite has other distinct features that are beneficial to the dentist and the patient.

What is a calcium hydroxide liner?

Calcium hydroxide is a low strength base that can be used as a liner, intermediary base or pulp-capping agent. They are supplied as two pastses: a base, and a catalyst containing calcium hydroxide and zinc oxide.