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border-radius: 14px;\n      }\n    }\n  <\/style>\n\n  <div class=\"gf-answer-wrap\">\n    <article class=\"gf-answer-card\">\n      <p class=\"gf-label\">Gloss &amp; Floss Answers \u00b7 Root Canals, Fillings &#038; Crowns<\/p>\n\n      <h1 id=\"gf-page-title-069\">How long does a root-canaled tooth last?<\/h1>\n\n      <p class=\"gf-meta\">Author: Gloss &amp; Floss Dental Care\u00ae \u00b7 Clinically reviewed by a dentist at Gloss &amp; Floss Dental Care\u00ae \u00b7 Last reviewed: 2026-06-30<\/p>\n\n      <section class=\"gf-direct-answer\">\n        <h2>Direct answer<\/h2>\n        <p>A root-canaled tooth can last for many years and sometimes decades when the root canal is well sealed, the tooth is properly restored and the surrounding gums and bone remain healthy. Longevity depends on remaining tooth structure, cracks, crown protection, bite forces, oral hygiene, gum support and whether reinfection develops. The restoration placed after the root canal is often as important as the root canal itself.<\/p>\n      <\/section>\n\n      <section>\n        <h2>Why the final restoration matters<\/h2>\n        <p>Root canal treatment removes infected or inflamed tissue from inside the tooth, but it does not make a weakened tooth strong by itself.<\/p>\n        <p>If the tooth has a large filling, deep decay or cracks, it may need a crown or other protective restoration to reduce fracture risk and seal the tooth against bacteria.<\/p>\n      <\/section>\n      <section>\n        <h2>Factors that affect longevity<\/h2>\n        <table>\n          <caption>This table explains what can help or reduce the lifespan of a root-canaled tooth.<\/caption>\n          <thead>\n            <tr>\n              <th scope=\"col\">Factor<\/th>\n              <th scope=\"col\">Why it matters<\/th>\n              <th scope=\"col\">What helps<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Root canal seal<\/td>\n              <td>Bacteria can re-enter if the canal system or restoration leaks.<\/td>\n              <td>Good treatment, sealing and follow-up.<\/td>\n            <\/tr>\n            <tr>\n              <td>Remaining tooth structure<\/td>\n              <td>Weak teeth fracture more easily.<\/td>\n              <td>Crown or onlay when indicated.<\/td>\n            <\/tr>\n            <tr>\n              <td>Cracks<\/td>\n              <td>Cracks can extend into the root and worsen prognosis.<\/td>\n              <td>Early diagnosis and protection.<\/td>\n            <\/tr>\n            <tr>\n              <td>Bite forces<\/td>\n              <td>Grinding and heavy chewing can overload restored teeth.<\/td>\n              <td>Bite adjustment or night guard when appropriate.<\/td>\n            <\/tr>\n            <tr>\n              <td>Gum support<\/td>\n              <td>A tooth still needs healthy surrounding bone and gum.<\/td>\n              <td>Periodontal maintenance and hygiene.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/section>\n      <section>\n        <h2>Signs the tooth should be checked<\/h2>\n        <ul>\n          <li>Pain when biting.<\/li>\n          <li>Swelling, bad taste or pus.<\/li>\n          <li>A crown or filling that feels loose.<\/li>\n          <li>A temporary filling that has fallen out.<\/li>\n          <li>New sensitivity or tenderness.<\/li>\n          <li>A crack, chip or broken cusp.<\/li>\n          <li>A gum bump near the root area.<\/li>\n          <li>A tooth that suddenly feels high in the bite.<\/li>\n        <\/ul>\n      <\/section>\n      <section>\n        <h2>What happens at Gloss &#038; Floss Dental Care\u00ae?<\/h2>\n        <p>At Gloss &#038; Floss Dental Care\u00ae in Stockholm, we assess root-canaled teeth by checking symptoms, bite, restoration, gum support and X-rays when needed.<\/p>\n        <p>If the tooth is restorable, we may recommend a crown, filling replacement or follow-up. If reinfection, fracture or poor prognosis is present, retreatment, surgery or extraction may need discussion.<\/p>\n      <\/section>\n      <section>\n        <h2>When should you protect the tooth with a crown?<\/h2>\n        <p>A crown is often considered when a back tooth has lost a large amount of structure, has a large filling, is cracked or carries heavy chewing forces.<\/p>\n        <div class=\"gf-note-box\">\n          <p><strong>Practical advice:<\/strong> Do not leave a root-canaled tooth with a temporary filling longer than recommended. Leakage can affect prognosis.<\/p>\n        <\/div>\n      <\/section>\n\n      <section>\n        <h2>Frequently asked questions<\/h2>\n        <h3>Can a root-canaled tooth get infected again?<\/h3>\n        <p>Yes. Reinfection can occur if bacteria re-enter, if anatomy was difficult or if the restoration leaks.<\/p>\n\n        <h3>Does a root-canaled tooth need a crown?<\/h3>\n        <p>Not always, but many back teeth and weakened teeth need crown protection.<\/p>\n\n        <h3>Can a root-canaled tooth break?<\/h3>\n        <p>Yes. Teeth with large fillings or cracks can fracture if not protected appropriately.<\/p>\n\n        <h3>How often should it be checked?<\/h3>\n        <p>It should be checked during routine examinations and sooner if symptoms appear.<\/p>\n      <\/section>\n\n      <section>\n        <h2>Related answers<\/h2>\n        <ul class=\"gf-link-grid\">\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/does-a-root-canal-hurt\/\">Does a root canal hurt?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/when-do-you-need-a-dental-crown\/\">When do you need a dental crown?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/how-long-does-a-dental-crown-last\/\">How long does a dental crown last?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/can-a-filled-tooth-get-a-cavity-again\/\">Can a filled tooth get a cavity again?<\/a><\/li>\n        <\/ul>\n      <\/section>\n\n      <section>\n        <h2>Related treatments<\/h2>\n        <ul class=\"gf-link-grid\">\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/root-canal-treatment\/\">Root canal treatment<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/dental-fillings\/\">Dental fillings<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/dental-crowns\/\">Dental crowns<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/book-an-appointment\/\">Book an appointment<\/a><\/li>\n        <\/ul>\n      <\/section>\n\n      <section class=\"gf-disclaimer\">\n        <h2>Disclaimer<\/h2>\n        <p>This article provides general information from Gloss &#038; Floss Dental Care\u00ae in Stockholm. It does not replace root canal assessment, X-ray diagnosis or restorative treatment planning.<\/p>\n      <\/section>\n    <\/article>\n  <\/div>\n\n  <script type=\"application\/ld+json\">\n[\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"Article\",\n    \"headline\": \"How long does a root-canaled tooth last?\",\n    \"description\": \"Learn what affects how long a root-canaled tooth can last, including sealing, crowns, cracks, gum support and maintenance.\",\n    \"inLanguage\": \"en\",\n    \"author\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Gloss & Floss Dental Care\"\n    },\n    \"publisher\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Gloss & Floss Dental Care\"\n    },\n    \"dateModified\": \"2026-06-30\",\n    \"mainEntityOfPage\": \"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/how-long-does-a-root-canaled-tooth-last\/\"\n  },\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Can a root-canaled tooth get infected again?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Yes. 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Author: Gloss &amp; Floss Dental Care\u00ae \u00b7 Clinically reviewed by a dentist at Gloss &amp; Floss Dental Care\u00ae \u00b7 Last reviewed: 2026-06-30 Direct answer A root-canaled tooth can last for many years and sometimes decades when the root&#8230;<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":30875,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"cybocfi_hide_featured_image":"","footnotes":""},"class_list":["post-31021","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Long Does a Root-Canaled Tooth Last? - Gloss &amp; Floss<\/title>\n<meta name=\"description\" content=\"How long does a root-canaled tooth last? 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