Dental Cements, Bases and Liners

glass ionomer cement

this glass powder bonds CHEMICALLY to calcium and releases FLUORIDE. however it can be acidic and cause pulpal irritation; absorbs water

composite cement

a dental material used for permanent cementing of restorations such as crowns, bridges, inlays and onlays

compomer cement

this glass powder is a contemporary alternative today and is a combination of properties of both resin and glass ionomer cements. releases fluoride.

Eugenol

this cement liquid is also known as "oil of cloves"

composite

eugenol must never be used in any ____________ restoration procedure. it inhibits free radical polymerization essential to the setting.

luting agent, pulp protection, tempoary restoration, cavity sealers.

what are some of the uses of a dental cement?

Zinc phosphate

this is a very strong luting cement that must be mixed to with particular care.

varnish

this is a thin layer if material placed on the floor and walls of a preparation to seal dentinal tubules and minimize microleakage; THEY EVAPORATE QUICKLY

varnish

_______ cannot be used under resins or in bonding procedures

liners

_____ serve 3 functions: 1) change the chemistry of the tooth surface, 2) irritate the pulp to form secondary dentin and 3) to bond filling material to a tooth

Bases

______ are mixed to a secondary consistency and are thicker and stronger than liners. they provide thermal insulation.

adhesion

the joining together of 2 objects

cavity liner

a dental material used to seal the dentin and to protect the pulp of the tooth being restored

varnish

a dental material used as a liner to create a protective seal over the dentin and pulp of the tooth being restored

etchant

acid-based dental material used to improve the bond between a resoration and the tooth

curing

the process by which a dental materials sets and hardens

resistance

the degree to which dental material can hold up under force or stress

viscosity

how well a liquid moves and flows

Alloy

a combination of 2 or more metals

pestle

a rod-like instrument with one rounded and weighted extremity used for mixing substances

solubility

the degree to which dental material dissolves and breaks apart when wet

stress

the force or pressure applied to dental material

zinc oxide eugenol

This cement needs to be mixed using an oil-resistant paper mixing pad

Polycarboxylate

when mixed, the cement should be somewhat thick and become cobweb-like when overmixed

glass ionomer

releases fluoride into the tooth to help against cavities

macrofilled composites

have the largest particle size and are stronger composites

microfilled composites

smaller particle size and are mostly used for front teeth

before

during a composite restoration, a cavity liner can placed before or after the etchant to protect the tooth pulp

finishing strips

used during a composite procedure

carvers

used during an amalgam procedure

Polymerization

the process by which composite material hardens

ZOE

This cement is a low-strength or a sedative base

insulating base

This base is used to protect the pulp from suddent changes in temperature that naturally occur within a tooth

Sedative base

Used to treat pulp that has been damaged by dental caries or infection

protective base

are used to shield the pulp prior to placing the restoration

zinc phosphate

is used as an insulating base because it heats up at the same rate as the dentin

Tensile strength

the amount of force or pulling the dental material is able to resist without tearing or falling out of place

Elasticity

the ability of dental materials to change shape when force is applied and then return to their orginal strength

Corrosion

a chemical process that happens when metal mixes with water

polycarboxylate

people with excess lactic acid in their mouth can cause this cement to break down

zinc phosphate

When mixing this cement, it is important to use a cool glass slab

strain

changes in shape or function of dental a material that are result of being under stress

Zinc oxide eugenol

What cement base has insulting, protecting, and sedative property

packable composites

contain more filler and used to fill a larger restoration

flowable composites

not very strong and can be used in very small spaces and come in a wide variety of shades

Microleakage

this will create dental caries and increased tooth sensitivity

calcium hydroxide

can be used with all types of restorations and is especially helpful for deep cavities

Dycal

a commonly used calcium hydroxide liner

Glass Ionomers

Very thin and shiny in appearance

etchants

contain 30%-40% phosphoric acid