Because a root canal removes the pulp inside the tooth, the tooth becomes more fragile and may break more easily if it is not covered with a crown or cap.
A root canal needs to be done as soon as possible to avoid a severe infection, which can damage the bone surrounding the root of the tooth and infect other teeth.
If you have a severely decayed or infected tooth, you may not want to go through the expense and discomfort of a root canal and crown fitting. Instead, you may choose to have the tooth removed (extracted). The space can be left open or restored with a fixed or removable bridge.
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