Table of Contents
- 1 What is the advantage of zinc oxide eugenol?
- 2 Which base is used in composite restoration?
- 3 Which cement should not be used under a composite restoration?
- 4 What is the purpose of a cement base?
- 5 Why is zinc oxide eugenol cement considered the choice for temporary restorations?
- 6 What is eugenol used for in dentistry?
- 7 What kind of base is zinc oxide and eugenol?
- 8 Are there any disadvantages to using zinc oxide?
What is the advantage of zinc oxide eugenol?
Zinc oxide-eugenol cements are considerably better tolerated by tissue than other dental materials. As they alleviate pain and are bacteriostatic and antiseptic, they are well tolerated by patients. The cements are good insulators and possess better sealing properties than zinc phosphate cements.
Which base is used in composite restoration?
A suitable base material for composite resin restorations: zinc oxide eugenol.
What is the purpose of eugenol as a medicament in Zoe?
Low concentrations of eugenol exert anti-inflammatory and local anesthetic effects on the dental pulp. Thus use of ZOE temporary filling may facilitate pulpal healing; on the other hand, high eugenol concentrations are cytotoxic.
How does zinc oxide eugenol work?
Zinc oxide eugenol (ZOE) is a material created by the combination of zinc oxide and eugenol contained in oil of cloves. An acid-base reaction takes place with the formation of zinc eugenolate chelate. The reaction is catalysed by water and is accelerated by the presence of metal salts.
Which cement should not be used under a composite restoration?
The zinc oxide–eugenol cements are used to provide a sedative effect in deep preparations, but their low compressive strength presents clinical limitations. Zinc oxide–eugenol cements should be used with caution under resin-based composite restorations because the eugenol can inhibit the polymerization of the resin.
What is the purpose of a cement base?
The base in concrete construction is the layer between the sub-grade (existing soil) and the concrete slab. The base (usually a crushed stone material) acts as a support between the dirt and slab, and ultimately, reduces cracking of the slab.
Can zinc phosphate be used under composite?
Resin-based ceramic matrix composite materials in dentistry Cements like zinc phosphate, zinc oxide eugenol, zinc oxide ethoxy benzoic acid (super EBA), polycarboxylate and glass ionomer, provide primarily mechanical retention, since adhesion was estimated to be too low for luting tooth-colored restorations.
Why is it not used under a composite resin?
Dental liners, bases and cavity varnishes are used for this purpose. (Cavity varnishes have been largely replaced by dentine bonding agents). However it is not compatible with resin composite materials because it blocks adhesion and has a detrimental effect on the bonding properties.
Why is zinc oxide eugenol cement considered the choice for temporary restorations?
Zinc oxide-eugenol cements have traditionally been used as temporary restoratives because of the sedative effect on the pulp, which may be enhanced by the excellent seal they produce. Replacing part of the eugenol liquid with ethoxy benzoic acid can produce cements that have greater strength.
What is eugenol used for in dentistry?
Eugenol has been widely used in dentistry to treat toothache and pulpitis (7). A previous study indicated that eugenol may be an ideal natural agent for use in oral care products. Eugenol inhibits the growth and insoluble and soluble glucan synthesis of S.
What is the most frequent use of zinc oxide and eugenol?
treatment of restorations
The most frequent use of zinc oxide and eugenol is as a treatment of restorations. It helps inhibit pulpal irritation when setting in place for treatment of fractured teeth; lost restorations advanced caries or pulpitis.
When to use zinc oxide or eugenol cement?
Zinc oxide-eugenol cement (IRM) is a low-strength base used as a temporary cement filling in the event that the patient will return at a later date for a semi-permanent restoration.
What kind of base is zinc oxide and eugenol?
Zinc oxide-eugenol cement (IRM) is a low-strength base used as a temporary cement filling in the event that the patient will return at a later date for a semi-permanent restoration. The powder is mainly zinc oxide and the liquid is eugenol with olive oil as a plasticizer. Armamentarium: Eugenol liquid
Are there any disadvantages to using zinc oxide?
The only disadvantage of using zinc oxide/eugenol is its incompatibility with composite resins. If this is likely to be a problem, a non-eugenol dressing may be used but would lack antibacterial effect. View chapter Purchase book
Which is more unstable in water eugenol or ethoxybenzoate?
The zinc eugenolate matrix chelate is very unstable in water. Its hydrolysis forms eugenol and zinc hydroxide, releasing the zinc oxide particles exposed in the process. In vitro studies showed that zinc 2-ethoxybenzoate matrix formd in EBA-eugenol cements is even more prone to hydrolysis than the zinc eugenolate.