{"id":31027,"date":"2026-06-24T08:51:07","date_gmt":"2026-06-24T06:51:07","guid":{"rendered":"https:\/\/www.gloss-floss.se\/?page_id=31027"},"modified":"2026-06-30T11:30:52","modified_gmt":"2026-06-30T09:30:52","slug":"can-a-filled-tooth-get-a-cavity-again","status":"publish","type":"page","link":"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/can-a-filled-tooth-get-a-cavity-again\/","title":{"rendered":"Can a filled tooth get a cavity again?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"31027\" class=\"elementor elementor-31027\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-287a46e7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"287a46e7\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div 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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-074\">Can a filled tooth get a cavity again?<\/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>Yes, a filled tooth can get a cavity again. Decay can develop around the edges of an old filling, under a leaking filling or on another surface of the same tooth. This is called recurrent decay when it occurs near an existing restoration. Regular check-ups, good cleaning, fluoride and early repair of leaking margins help reduce the risk.<\/p>\n      <\/section>\n\n      <section>\n        <h2>Why fillings do not make teeth immune<\/h2>\n        <p>A filling repairs damage that has already occurred, but the remaining natural tooth can still be affected by plaque, sugar, acid, dry mouth and leakage.<\/p>\n        <p>Over time, filling edges can wear, chip or open microscopically. If bacteria enter the gap, decay can start around or under the restoration.<\/p>\n      <\/section>\n      <section>\n        <h2>How decay returns around fillings<\/h2>\n        <table>\n          <caption>This table explains common ways a filled tooth can develop new decay.<\/caption>\n          <thead>\n            <tr>\n              <th scope=\"col\">Situation<\/th>\n              <th scope=\"col\">What happens<\/th>\n              <th scope=\"col\">Why it matters<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Leaking margin<\/td>\n              <td>A gap opens between filling and tooth.<\/td>\n              <td>Bacteria can enter and decay may develop underneath.<\/td>\n            <\/tr>\n            <tr>\n              <td>New surface decay<\/td>\n              <td>Another part of the same tooth gets decay.<\/td>\n              <td>The filling is intact but the tooth remains at risk.<\/td>\n            <\/tr>\n            <tr>\n              <td>Broken filling edge<\/td>\n              <td>Food and plaque trap around the defect.<\/td>\n              <td>The area may need repair or replacement.<\/td>\n            <\/tr>\n            <tr>\n              <td>Dry mouth<\/td>\n              <td>Less saliva protection increases decay risk.<\/td>\n              <td>Extra prevention may be needed.<\/td>\n            <\/tr>\n            <tr>\n              <td>High sugar frequency<\/td>\n              <td>Repeated acid attacks affect tooth surfaces.<\/td>\n              <td>Diet timing and fluoride become important.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/section>\n      <section>\n        <h2>Signs a filled tooth should be checked<\/h2>\n        <ul>\n          <li>Food trapping near the filling.<\/li>\n          <li>Floss catching or tearing.<\/li>\n          <li>A rough edge you can feel with your tongue.<\/li>\n          <li>Sensitivity to sweet, cold or biting.<\/li>\n          <li>Dark line or shadow around a filling.<\/li>\n          <li>Bad taste or smell from one area.<\/li>\n          <li>A piece of filling or tooth breaking off.<\/li>\n          <li>Pain that comes and goes.<\/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 check existing fillings during examinations and may use X-rays to detect decay between teeth or under restorations.<\/p>\n        <p>Treatment depends on the amount of damage. A small defect may need repair or replacement, while a heavily weakened tooth may need a crown or root canal treatment if decay has reached the nerve.<\/p>\n      <\/section>\n      <section>\n        <h2>How can you reduce the risk?<\/h2>\n        <p>Reduce risk with fluoride toothpaste, interdental cleaning, professional checks, limited sugar frequency and early assessment of rough or leaking filling edges.<\/p>\n        <div class=\"gf-note-box\">\n          <p><strong>Practical advice:<\/strong> A filling should be treated as a repair that needs maintenance, not as a permanent shield against future decay.<\/p>\n        <\/div>\n      <\/section>\n\n      <section>\n        <h2>Frequently asked questions<\/h2>\n        <h3>Can decay under a filling hurt?<\/h3>\n        <p>Sometimes, but not always. Decay under fillings can be silent until it becomes deep.<\/p>\n\n        <h3>Can X-rays show decay around fillings?<\/h3>\n        <p>X-rays can help detect decay between teeth and under some restorations, but clinical examination is also needed.<\/p>\n\n        <h3>Does recurrent decay mean the dentist did something wrong?<\/h3>\n        <p>Not necessarily. Decay can return because of leakage, time, plaque, diet, dry mouth or high decay risk.<\/p>\n\n        <h3>Can the filling simply be replaced?<\/h3>\n        <p>Often yes, if enough healthy tooth remains. Larger damage may need a crown or other treatment.<\/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\/how-do-i-know-if-i-have-a-cavity\/\">How do I know if I have a cavity?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/why-do-fillings-fall-out\/\">Why do fillings fall out?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/filling-vs-crown-what-is-the-difference\/\">Filling vs crown: what is the difference?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/how-can-i-prevent-tooth-decay\/\">How can I prevent tooth decay?<\/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 dental examination, X-ray diagnosis or individual 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\": \"Can a filled tooth get a cavity again?\",\n    \"description\": \"Learn how a filled tooth can get decay again around filling edges, under leaking restorations or in new areas of the same tooth.\",\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\/can-a-filled-tooth-get-a-cavity-again\/\"\n  },\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Can decay under a filling hurt?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Sometimes, but not always. 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