Root Canal: When a root canal is performed the majority of the blood supply to the tooth is removed. This results in a more brittle and reduced tooth, so a restoration to cover and protect, at least the biting surface is needed to ensure the tooth doesn't fracture, even to the point of losing the tooth. There is no timetable but asap is always the best to not give the chance for something bad to happen.
Answered 3/26/2014
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Molars: The molars do the heavy chewing so they experience the most heavy forces in the teeth.. This makes them the most vulnerable doe fracture after a root canal if there is no crown. But these are not the only teeth that may fracture. Crow ns are recommended for most teeth after root canal. Talk to your dentist about your particular situation.
Answered 8/25/2013
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2nd molars: Statistically speaking 2nd molars have the highest chance of vertical fracture due to occlusal forces. Ideally, all molars should be crowned after root canal treatment.
Answered 11/27/2013
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