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 calcium hydroxide a base or liner?

Calcium hydroxide is a low strength base that can be used as a liner, intermediary base or pulp-capping agent.

What are the main purposes of placing calcium hydroxide?

Calcium hydroxide can be used as linings, for indirect and direct pulp cupping, root dressing, root canal sealant, apical closure.

Is calcium hydroxide a cavity liner?

Calcium Hydroxide Cavity Liners

Calcium hydroxide cements are used for lining specific areas of deep cavities or for direct pulp capping. The antibacterial action of calcium hydroxide makes these cements useful in indirect pulp-capping procedures involving carious dentin.

Why is calcium hydroxide used in Endo?

The goal of endodontic treatment is the prevention and control of pulpal and periradicular infections. Calcium hydroxide (Ca(OH)₂) has been widely used in endodontics as an intracanal medicament to eliminate the remaining microorganisms after chemomechanical preparation.

Intermediary Base - Calcium Hydroxide and Zinc Oxide Eugenol

What is a calcium hydroxide 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.

How does calcium hydroxide work in pulp capping?

Calcium hydroxide possesses antibacterial properties, and this can minimize or eliminate bacterial penetration to the pulp. Traditionally, it has been believed that calcium hydroxide's high pH causes irritation of the pulp tissue, which stimulates repair via some unknown mechanism.

Why is calcium hydroxide used in dentistry?

Calcium hydroxide is used in both the preservation of the vital pulp and the disinfection of the prepared root canal system. To achieve success in direct pulp capping a strict aseptic regime must be followed. Various forms of root resorption, their aetiology and treatment, are considered.

What does calcium hydroxide do in concrete?

Carbon dioxide from the air reacts with the calcium hydroxide in concrete to form calcium carbonate. This reaction, called carbonatation, is a slow and continuous progression from the outer surface inward. Carbonatation increases the mechanical strength of concrete, but it also decreases the pH.

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 are the advantages of calcium hydroxide?

The main advantage of calcium hydroxide is that it has an effect on microorganisms in the absence of direct contact, not only by creating a high pH environment but also by absorbing CO2 required for bacterial growth. The best technique for using calcium hydroxide is to place and condense the paste into the canals.

Why do we use Dycal?

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 materials can be used as a liner?

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

What is the difference between liner and base?

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 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.

Is calcium hydroxide found in cement?

Abstract. Calcium hydroxide is one of the main reaction products resulting from the hydration of Portland cement with water. It is also one of the more soluble phases found in hydrated cement systems.

What is the effect of calcium in cement?

calcium chloride compensates for the reduction in strength with a higher cement factor concrete. Reduces bleeding... this is due to the early stiffening produced by acceleration and allows earlier final finishing. These advantages combine to produce better quality concrete faster.

What causes concrete leaching?

The leaching occurs when water leaks into concrete dissolving the calcium causing a staining to occur on top of the surface. The build up at Questacon was a combination of dirt and lime/calcium build up and required specialised cleaning chemicals, machinery and processes in order to remove the stain.

How does calcium hydroxide form reparative dentin?

Indirect capping produced reactionary dentin, while direct pulp capping led to the formation of reparative dentin by a dentinal bridge, closing almost the whole pulp exposure. Since the pioneering work of Hermann (Hermann 1930), calcium hydroxide [Ca(OH)₂] is recognized as a beneficial pulp capping agent in dentistry.

What are some advantages of MTA over calcium hydroxide as a direct pulp capping agent?

MTA is more effective and superior comparing the Calcium Hydroxide as a direct pulp capping material, showed higher success rate with favorable outcomes in maintaining long term tooth vitality and easier to use in pulp capping. MTA is less toxic, less pulpal inflammation capping compared to Calcium Hydroxide.

How do you stop pulp from bleeding?

Sodium hypochlorite (NaOCl) at a concentration of 5% can be applied for 30 seconds to stop bleeding as shown by Dammaschke et al. (13) and Asgary et al. (14). In addition, NaOCl demonstrated moderate/high rate of pulp survival.

When should I use pulp capping?

Direct pulp capping is used when the pulp is visibly exposed (vital pulp exposure) due to caries, trauma, or iatrogenic insult such as accidental exposure during tooth preparation or caries removal.

On what tooth structure is calcium hydroxide placed?

As shown, calcium hydroxide is placed over the deepest portion of the pulpal floor, and only on dentin.

Would cavity varnish be placed under or over calcium hydroxide?

Be sure that if calcium hydroxide is indicated, it is placed prior to cavity varnish, and is set before applying the varnish. 4.

What is a liner in packaging?

Liner is a piece of material that sits between the cap and the bottle. It's primary function is to offer proper sealing of the product and often times it determines the closure's fit and function viability. Since the liner facing is in direct contact with the product, chemical compatibility is critical.