What material prevents microleakage or penetration of the acids from some cements into the dentin?
Varnishes
The manufacturer may supply _____ (gel/liquid) with the resin cement.
etchant
What are the three types of resin cements?
1. self-curing (chemical)
2. light cured
3. dual cured
Dual-cured materials contains ___ for a self-curing as well as light-curing reaction.
chemicals
Self-cured materials are used with _____ to ______ combination materials and _____ posts.
metal to metal;endodontic
Light-curing materials are used with ____/resin restorations, and _______ brackets.
porcelain;orthodontic
Material is used to improve retention between the tooth structure and the restoration?
bonding agents (adhesives and bonding resins)
5 reasons for restoring teeth are....
1. arresting the loss of tooth structure.
2. Preventing the recurrence of decay by placing margins that can be reached easily for cleaning (extension for prevention).
3. restoring contour of the tooth (shape and design of crown.
4. restoring function of t
____ bonding alters the surface of the enamel and creates microscopic undercuts between the enamel rod.
Enamel bonding
Thermal conductivity is the ability of material to ______ heat.
transmit
With temperature changes, materials expand and contract is called...
Thermal expansion
What are placed in the deepest portion of the cavity preparation on the axial walls or pulpal walls?
Cavity liners
When a posterior tooth ends up becoming a moderately deep to deep preparation, the dentist will most likely choose to place a ____ under the permanent restoration.
Base
There are 3 dental bases and they are...
1. Protective
2. Insulating
3. Sedative
Without protective base, there may be postoperative _____ and ____ to the pulp
sensitivity and damage
____ bases are placed in a deep cavity prepartion to protect the tooth from thermal shock.
Insulating bases
What is it called when a base help soothe a pulp that has been damaged by decay or irritated during the process of removing the decay?
Sedative bases
A _____ agent is classfied as a Type 1 dental cement that acts as an _____ to hold the indirect restoration to the tooth structure.
luting; adhesive
Before mixing, D.A. need ot read and carefully follow the ______ ____ for the type of cement being mixed.
Manufacturer's directions.
Cementing errors are the result of improper ______, _____, and/or _____ temperture.
technique humidity, and/or incorrect
Why do we used the temporary cements?
1) To remove the indirect restoration at a later time
2) when the tooth is sensitive or is exhibitng other symptoms that might require removing the cast restoration
3) When Temporary cementation of provisional coverage is required
The most expensive permanent cement is the ______ _________.
Glass Ionomer
What are the 2 cements that forms a bond with the tooth, enamel, dentin, & metallic materials?
Glass Ionomer and Polycarboxylate
Glass Ionomer is known as the ____ restorative materials compared to the other 3 permanent cements.
weakest
Polycarboxylate is used for ___ restorations, ___ ___ crowns, and _____ bands.
cast;stainless steel; orthodontic
Polycarboxylate can be used as a _________ base udner both composite and amaglam restorations & also an intermediate restoration.
nonirritating
One of the oldest dental cements being used are called _______.
Zin Phospate (ZNP)
Zin phospate contains ______ acid and can be _____ to the pulp
phosphoric; irritating
What cement gives off an exothermic reaction?
ZNP
Composite Resin Cement have been designed especially for indications such as
1. Cemention of ceramic or inlays, onlays
2. Ceramic veneers
3. Orthodontic bands
4. Direct bonding of orthodontic bracklets
5. All metal casting
When using compostie resin cements the tooth must be ___ of all plaque and debris and either prepared by ___ or treated with a ____ system before cementation.
free; etching; bonding
The most common dental restorative materials are.... (Hint: 7)
Amalgam, Composite resins, Glass Ionomers, Temp. materials, Tooth whitening products, Gold Alloys, Ceramic Castings
Are Composite resins not as strong or is as strong as amaglams or gold alloy restorations?
not as strong
What is the process in which the resin material is changed form a plastic state inot a hardened restoration?
Polymerization
What are the reasons for Temp. restorative materials are used?
1. Reduce sensitivity and discomfort of a tooth
2. Maintain the function and esthetics of a tooth 'til permanent restoraiton
3. Protects the margins of a prepared tooth that will receive a permanent casting at a later time
4. Prevent shifitng of the adjac
Common uses of IRM?
1. Restoration of primary teeth
2. Restorative emergencies
3. Caries management programs
Indirect restorations are also referred to as ____.
casting
Combinations of ceramic-metal restorations are...
1. PFM-Porcelain fused to metal
2. PBM-Porcelain bonded to metal
3. C/M- Ceramco-metal
4. P/M- Porcelain-metal
Procelain material is chosen because....(Hint: 5 reasons)
1. match the natural tooth color
2. improves the esthetic apperance of anterior teeth
3. material has the strength of metal
4. a good insulator
5. low coefficient of thermal expansion
Etchants are used before or after the placement of bonding agents, restorative materials, dental cements, and pit and fissure sealants?
before