If I lose or break my retainer, why do I have to have another mold taken? Why can't they just just use the mold from the previous retainer?
Yes you will need to have another mold taken. To further explain the answer to this question it is important you know exactly how the mold is used...A mold is used at our office to make a stone model of your teeth. A retainer is then made off of that stone model. The stone is very brittle and when the fabricated retainer is pulled from it pieces of the model break off. The model is no longer usable after that and is then thrown away. Another reason is if your teeth have shifted even the slightest bit from where they were when the initial model was taken, the new retainer will not fit.
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