HIGH COPPER AMALGAM

much more useful

low copper amalgam

The application of high copper amalgam was found to be _ than_.

<6% copper (conventional alloy)

LOW COPPER ALLOY -

6-30% copper conten

 HIGH COPPER ALLOY –

 The application of high copper amalgam was found to be much more useful than low copper amalgam.

 LOW COPPER ALLOY - <6% copper (conventional alloy)

 HIGH COPPER ALLOY – 6-30% copper content

HIGH COPPER AMALGAM

o Early full strength achieved within 1 hour of placement

o Increased mechanical properties, e.g. compressive strength

o Reduction in creep and therefore ditching (creep values of these alloys are between 0.09% and 1.18%)

o Reduced corrosion potential.

Advantages:

full strength

1 hour

Topic : Advantages

Early_ achieved within _ of placement

corrosion potentia

Topic : Advantages

Reduced_l.

creep

therefore ditching

0.09% and 1.18%

Topic : Advantages

Reduction in_ and_ (creep values of these alloys are between_)

mechanical properties

compressive strength

Topic : Advantages

Increased _, e.g. _

o One drawback of the high copper amalgam is that the microgap persist due to lack of the y2 phase, and so these alloys have been associated with greater microleakage.

o Increased postoperative sensitivity with a risk of recurrent caries.

MICROGAP (Microleakage) - Disadvantages:

microgap persist

lack of the y2 phase

Topic : MICROGAP (Microleakage) - Disadvantages

One drawback of the high copper amalgam is that the _due to _, and so these alloys have been associated with greater microleakage.

alloys

greater microleakage

Topic : MICROGAP (Microleakage) - Disadvantages

One drawback of the high copper amalgam is that the microgap persist due to lack of the y2 phase, and so these _ have been associated with_.

postoperative sensitivity

recurrent caries

 MICROGAP (Microleakage) - Disadvantages:

Increased _ with a risk of_.

use of intermediate bonding agent in combination with these alloys to seal the dentin at the microgap

What is the soultion for MICROGAP (Microleakage)