The number of times a root canal can retreat is different in every situation and is dependent upon a number of factors. Root canal retreatment can be a successful procedure; the success depends on correcting the deficiency with the prior treatments. However, when not managed appropriately during root canal therapy, a tooth can become more structurally compromised. This can affect the repairability of the tooth. If there are structural concerns, it may be worth getting opinions on salvageability from your endodontist, or come to Ideal Endodontics for a professional opinion today.