Tools of the trade: TheraCal LC

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protective liner

by Dr Melissa Giddings, Striking Smile, Rose Bay, NSW

TheraCal LC can be used as a lining for deep fillings or as a direct or indirect pulp cap. It reduces sensitivity in large restorations and can effectively protect the nerve of a tooth.

What’s good about it

It comes in a syringe so it’s easy to apply. Similar products need to be mixed before application and are very difficult to position. They also take time to set whereas TheraCal LC is light cured. Once it has been placed and cured, the tooth can be restored as normal.

TheraCal LC works very well if a small area of the nerve has been exposed during deep drilling. It will save the nerve and build extra tooth structure. It helps prevent nerve treatment when doing an indirect or direct pulp cap. It can also be applied in a wet field. If you’re doing a direct pulp cap and the nerve is bleeding a bit, TheraCal LC will still bond over the wetness. 

Sometimes, a thicker layer is required when lining a tooth and, in those cases, multiple layers can be built up. When replacing a deep amalgam filling, I’ve found that lining the tooth with TheraCal LC will effectively eliminate any sensitivity.

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What’s not so good

The material can only be applied in one millimetre increments. If you want to build a thick layer, it will take a little extra time as you apply, cure and repeat.

Where did you get it

Gunz

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