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Dental Materials ch. 4 Adhesive Materials

Terms in this set (25)

Postage stamps are now self-adhesive. The paper (actual stamp) is referred to as the _______________, and the sticky material on the back of the stamp is termed the ____________
Adherend, adhesive
Kristin has orthodontic appliances, commonly known as "braces." These include metal brackets directly bonded to the facial surface with a bonding material. One bracket breaks off, and the "failure" occurs within the bonding material. This type of failure is considered to be:
Cohesive
On the lines below, use the numbers 1 through 8 to place the steps of the acid-etching process and restoration placement in correct sequence.
_____ Clean surface is rinsed with water.
_____ Etched surface is rinsed with water. _____ Bonding resin is applied.
_____ Enamel is cleaned with pumice.
_____ Cleaned surface is dried with air.
_____ Etched surface is dried with air.
_____ Restorative material is applied.
_____ Etchant is applied.
1. enamel is cleaned with pumice
2. clean surface is rinsed with water
3. cleaned surface is dried with air
4. etchant is applied.
5. etched surface is rinsed with water.
6. etched surface is dried with air.
7. bonding resin is applied
8. restorative material is applied
Orthophosphoric acid (enamel etchant) is commonly used in a _______ concentration.
37%
Why do primary teeth need to be etched longer than permanent teeth?
The enamel rods are less regularly arranged than on permanent teeth
Dentinal bonding systems function by way of:
Micromechanical bonding and secondary atomic bonds
The "dentin debris" that is created when dentin is cut or prepared by dental instruments is called:
smear layer
The use of bonding in dentistry serves all of the following functions EXCEPT:
Retention of color in the restoration
An adhesive mechanism of a dentinal bonding system is a hybrid layer. It is composed of:
Resin and decalcified dentin
The following are all historical fallacies about dentinal bonding except one. Which one is the EXCEPTION?
The smear layer is "dentinal debris"
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Low-strength compared to other restorative materials
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