When sometimes Repeating a Root Canal Isn’t Worth It? Sometimes, even with a well-done root canal, problems can return for reasons we don’t fully understand. This could show up as an infection, cyst, or abscess around the root. If your tooth has already served you for over 5 years—which is considered a successful treatment—redoing everything may not give better long-term results. In such cases, an implant can be a more reliable and lasting solution. | DentalManiak