This procedure is one that takes place when there is significant decay damage to the tooth. Typically, this is when we see more than half of the tooth's biting surface is gone from decay. This process is very similar to a cavity filling but differs in the severity and amount of which the tooth needs to be filled or replaced. The technique involves fabricating the restoration outside or inside of the mouth using the dental impressions of the prepared tooth, rather than placing a soft filling into the prepared tooth before the material sets hard.
You will typically need to schedule two appointments for this procedure so that during the first, an impression can be taken and during the second, the inlay or onlay can be applied.