What is calcium hydroxide paste?
Pure calcium hydroxide paste has a high pH (approximately 12.5-12.8) and is classified chemically as a strong base. Its main actions are achieved through the ionic dissociation of Ca(2+) and OH(-) ions and their effect on vital tissues, the induction of hard-tissue deposition and the antibacterial properties.
How does calcium hydroxide work?
Calcium hydroxide has a hard tissue inducing effect. It is a powder, that can be mixed with a physiological saline to a paste. The paste is highly alkaline with a pH 12.5 and its application to the pulp results in necrosis of the part of coronal pulp tissue shows no or only a milled inflammatory reaction.
What does calcium hydroxide do 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 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.
How long does it take for calcium hydroxide to work?
studied the antimicrobial effect of calcium hydroxide as a short-term intracanal dressing in teeth with periapical lesion. They applied it for 10 minutes and for 7 days, and reported that the effective destruction of microorganisms was complete only after 1 week.
What is Ledermix paste?
Ledermix Paste is a paste containing triamcinolone and demeclocycline with demonstrated anti-inflammatory activity that may slow down resorptive processes after severe traumatic injuries to the dentition. A total of 29 premolar roots of six mongrel dogs were extracted and instrumented with rotary nickel titanium files.
What is Ledermix used for?
Ledermix combines the antibiotic action of demeclocycline with the anti-inflammatory action of triamcinolone and is particularly useful as an emergency measure in endodontic therapy, where it can be used in root canals between appointments.
How long does calcium hydroxide take to set?
Calcium hydroxide (self-cured) liners have low values of tensile strength, compressive strength, and elastic modulus, compared with high-strength bases. Although setting times vary between 2.5 and 5.5 minutes, strength of these cements continues to increase over a 24-hour period.
How do you remove calcium hydroxide?
Intracanal calcium hydroxide is usually removed from the root canal by the use of copious manual irrigation with either sodium hypochlorite combined with hand instrumentation and a final rinse with EDTA.
Do you etch before Dycal?
10 The loss of material from Dycal as a result of acid contact is generally regarded as disadvantageous. Therefore, etching procedure should be done before Dycal application.
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.
What is the common name of calcium hydroxide?
slaked lime
Calcium hydroxide, also called slaked lime, Ca(OH)2, is obtained by the action of water on calcium oxide.
What are the benefits 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.
How do you apply calcium hydroxide to a root canal?
To maximize the benefit of their properties, Ca(OH)2 pastes must be in direct contact with the root canal walls and fill the total extension of the main canal space (4). If the root canal is not well instrumented and irrigated, the medication will not be effective.