Chpater 44 Flashcards
Types of stimuli
Physical
Mechanical
Chemical
Biologic
Physical stimuli
Thermal and electrical
Mechanical stimuli
Hand piece and traumatic
Chemical stimuli
Acid from dental materials
Biologic stimuli
Bacteria from saliva
What removed the smear layer
Acid etching
Bonding
Process of attaining a solid and it liquid contact of one material with another at a single margin.
Densensitizer seals what?
Seals tooth to protect from hypersensitivity. Seals the dental tubules.
An example of a cavity liner
Calcium hydroxide (dycal)
Where are liners placed?
Placed only on the deepest definition surface of the preparation.
Three types of base materials
Zinc oxide Eugenia (ZOE)
Zinc phosphate
Polycarboxylate
ZOE
Insulating base and sedative base
Cannot be used under composite resins, glass ionomers or other resin restoration
Zinic phosphate
Thermal insulating quality, irritating to the pulp, place a cavity liner under the base
Polycarboxylate
Doesn’t irritate pulp, placed under all types of restorations
Desiccate
To remove all moisture from an item or to dry out
Etchant
Chemical agent used to prepare a tooth surface for a dental material
Etching
Process of cutting unit a surface with the use of an acid product
Eugenol
Colourless liquid made form clove oil and used for its soothing qualities
Hybrid
Material that produces a similar outcome to its natural counterpart
Insulating
Preventing the passage of heat or electricity
Micro mechanical
Means by which a material and a structure lock onto one another through minute cutting
Obliterating
Removing something completely
Polymerize
To subject a material to the bonding process of two or more monomers
Smear layer
Very thin layer of debris on newly prepared Denton
Thermal
Relating to heat
What is Eugenols effect on the pulp?
Has a soothing affect on a painful irritated pulp
What three things does varnish accomplish?
Seals dental tools, reduces microleakage around restoration, access a barrier to protect the tooth from highly acidic cement such as zinc phosphate
Liners characteristics
Protects pulp chemical irritation with sealing ability
Stimulates production of reparative or secondary dentin
Compatible with all restorative materials
Where is liner placed?
Deepest part of tooth and placed before restorative material
What is an example of a liner?
Dycal
Which type of dental base contains Eugenol, which provides a sedative effect on irritated pulp?
ZOE
Which dental material seals dental tubules reduces leakage around restoration and acts as a barrier against highly acidic cements?
Varnish
What is dental sealer also referred to us?
Desensitizer
Before restoring a tooth is comp is it resin how long is the tooth edged?
15 to 30 seconds
Zinc phosphate cement is mixed on a:
Paper pad
Before dental bonding what function does acid etching have?
Removing the smear layer
Which dental material may be placed to provide a protective insulating and sedated affect and moderately deep cavity preparation before amalgam placement?
Dental base
Which stage in the cavity preparation and restoration should a dental varnish be applied?
After the application of the liner
3 types of dental bases?
Protective, insulating and sedative
