{"id":1153,"date":"2026-03-24T15:29:00","date_gmt":"2026-03-24T06:29:00","guid":{"rendered":"https:\/\/smiledigitaldc.com\/anterior-crown-retreatment-case\/"},"modified":"2026-10-11T23:52:05","modified_gmt":"2026-10-11T14:52:05","slug":"anterior-crown-retreatment-case","status":"publish","type":"post","link":"https:\/\/smiledigitaldc.com\/en\/anterior-crown-retreatment-case\/","title":{"rendered":"Front Tooth Crown Retreatment in Busan Seomyeon: A Case With Root Canal Retreatment and Non-Vital Whitening"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"773\" height=\"547\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-cover.jpg\" alt=\"Cover image: front tooth crown retreatment case in Busan\" class=\"wp-image-1132\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-cover.jpg 773w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-cover-300x212.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-cover-768x543.jpg 768w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-cover-18x12.jpg 18w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Hello<br>From the heart of Seomyeon,<br>drawing tomorrow's smile,<br>This is Smile Digital Dental Clinic \ud83d\ude42<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">If you feel discomfort around a front tooth crown placed long ago, or your gums bleed, is it enough to simply<br>make the crown again?<br>Depending on the condition of the tooth under the existing crown, the gums, and the area around the tooth root, additional treatment such as root canal retreatment or non-vital tooth whitening may be needed first.<br>Today we introduce the treatment of a patient in her 40s who visited because of sensitivity and gum bleeding<br>around a front tooth crown placed eight years ago.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of contents<\/h2><nav><ul><li class=\"\"><a href=\"#sec-1\">She Was Uncomfortable With Front Tooth Crowns Placed 8 Years Ago<\/a><\/li><li class=\"\"><a href=\"#sec-2\">X-rays Showed a Lesion Around the Root Tips<\/a><\/li><li class=\"\"><a href=\"#sec-3\">We Removed the Existing Crowns and Performed Root Canal Retreatment<\/a><\/li><li class=\"\"><a href=\"#sec-4\">We Used Temporary Teeth to Observe the Gums as Well<\/a><\/li><li class=\"\"><a href=\"#sec-5\">We Whitened the Discolored Front Teeth From the Inside (Non-Vital Whitening)<\/a><\/li><li class=\"\"><a href=\"#sec-6\">We Checked the Shape With Temporary Teeth Before the Final Crowns<\/a><\/li><li class=\"\"><a href=\"#sec-7\">We Completed Four Zirconia Crowns on the Front Teeth<\/a><\/li><li class=\"\"><a href=\"#sec-8\">Old Front Tooth Crowns: Is Replacing Only the Crown Enough?<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"sdc-case-banner\" style=\"background:#000;color:#fff;padding:28px 24px;text-align:center;margin:0 0 8px\"><div style=\"font-size:.95rem;font-weight:700\">Treatment Stage 1<\/div><div style=\"border-top:2px dotted #888;width:60%;margin:8px auto\"><\/div><div style=\"font-size:1.6rem;font-weight:700;line-height:1.3\">Why the Patient Visited<\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"773\" height=\"352\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-pano-before.jpg\" alt=\"Panoramic X-ray before front tooth crown retreatment\" class=\"wp-image-1133\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-pano-before.jpg 773w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-pano-before-300x137.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-pano-before-768x350.jpg 768w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-pano-before-18x8.jpg 18w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">December 9, 2025<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1134\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-right.jpg\" alt=\"Before treatment, right-side intraoral view of the existing front tooth crowns\" class=\"wp-image-1134\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-right.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-right-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-right-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"257\" data-id=\"1135\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-front.jpg\" alt=\"Before treatment, front intraoral view of the existing front tooth crowns\" class=\"wp-image-1135\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-front.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-front-300x200.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-front-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1136\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-left.jpg\" alt=\"Before treatment, left-side intraoral view of the existing front tooth crowns\" class=\"wp-image-1136\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-left.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-left-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-left-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1137\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-upper.jpg\" alt=\"Before treatment, upper occlusal intraoral view\" class=\"wp-image-1137\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-upper.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-upper-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-upper-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"257\" data-id=\"1138\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-lower.jpg\" alt=\"Before treatment, lower occlusal intraoral view\" class=\"wp-image-1138\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-lower.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-lower-300x200.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-before-lower-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Front teeth before treatment, December 9, 2025<\/p>\n\n\n\n<h2 id=\"sec-1\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">She Was Uncomfortable With Front Tooth Crowns Placed 8 Years Ago<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">The patient is a woman in her 40s who received front tooth crown treatment about eight years ago.<br>Recently her front teeth had become sensitive and her gums bled, so she visited for an examination.<br>She had existing crowns on the six upper front teeth, and the two central incisors among them had previously<br>undergone root canal treatment.<br>Between some teeth the gums had receded and left visible spaces, while around some of the crowns<br>we needed to recheck the relationship between the shape of the restoration and the gums.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"sdc-case-banner\" style=\"background:#000;color:#fff;padding:28px 24px;text-align:center;margin:0 0 8px\"><div style=\"font-size:.95rem;font-weight:700\">Treatment Stage 2<\/div><div style=\"border-top:2px dotted #888;width:60%;margin:8px auto\"><\/div><div style=\"font-size:1.6rem;font-weight:700;line-height:1.3\">Diagnosis and Treatment Plan<\/div><\/div>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1139\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-front-before.jpg\" alt=\"Front teeth before treatment, with crowns placed 8 years earlier\" class=\"wp-image-1139\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-front-before.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-front-before-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-front-before-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"293\" data-id=\"1140\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-xray-before.jpg\" alt=\"Periapical X-ray before front tooth crown retreatment showing a lesion around the root tips\" class=\"wp-image-1140\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-xray-before.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-xray-before-300x228.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-xray-before-16x12.jpg 16w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">X-rays before treatment, December 9, 2025 \/ January 3, 2026<\/p>\n\n\n\n<h2 id=\"sec-2\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">X-rays Showed a Lesion Around the Root Tips<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">On X-ray, a radiolucent area was seen around the root tips of the two central incisors that had undergone root canal treatment.<br>After reviewing the condition of the previous root canal treatment and her current symptoms, we planned to carry out root canal retreatment first<br>and then make new crowns.<br>Of the six existing front crowns, we decided to remove the restorations on the four front teeth other than the canines, check their condition, and retreat them.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"sdc-case-banner\" style=\"background:#000;color:#fff;padding:28px 24px;text-align:center;margin:0 0 8px\"><div style=\"font-size:.95rem;font-weight:700\">Treatment Stage 3<\/div><div style=\"border-top:2px dotted #888;width:60%;margin:8px auto\"><\/div><div style=\"font-size:1.6rem;font-weight:700;line-height:1.3\">Treatment in Progress<\/div><\/div>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"514\" data-id=\"1141\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-1.jpg\" alt=\"X-ray during root canal retreatment of the front teeth, view 1\" class=\"wp-image-1141\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-1.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-1-225x300.jpg 225w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-1-9x12.jpg 9w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"516\" data-id=\"1142\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-2.jpg\" alt=\"X-ray during root canal retreatment of the front teeth, view 2\" class=\"wp-image-1142\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-2.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-2-224x300.jpg 224w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-rct-xray-2-9x12.jpg 9w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Root canal retreatment process, January 3 \/ January 10, 2026<\/p>\n\n\n\n<h2 id=\"sec-3\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">We Removed the Existing Crowns and Performed Root Canal Retreatment<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Root canal retreatment begins by removing the material used in the previous root canal treatment and<br>re-examining the root canals inside the tooth.<br>After removing the old root canal filling, we checked the length and shape of the canals, cleaned and disinfected the inside, and<br>filled the canals again.<br>The reason retreatment is needed and the method differ from tooth to tooth, so<br>we decide after reviewing X-rays and the clinical examination together.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1143\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-1.jpg\" alt=\"Temporary teeth and gum changes after removing the existing crowns, view 1\" class=\"wp-image-1143\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-1.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-1-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-1-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1144\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-2.jpg\" alt=\"Temporary teeth and gum changes after removing the existing crowns, view 2\" class=\"wp-image-1144\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-2.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-2-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-2-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1145\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-3.jpg\" alt=\"Temporary teeth and gum changes after removing the existing crowns, view 3\" class=\"wp-image-1145\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-3.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-3-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-temp-3-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Temporary teeth and gum changes, January 3 \/ January 10 \/ February 11, 2026<\/p>\n\n\n\n<h2 id=\"sec-4\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">We Used Temporary Teeth to Observe the Gums as Well<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">After removing the existing crowns, we used temporary teeth instead of making the final crowns right away.<br>While checking the shape of the gums around the old restorations, we adjusted the temporary teeth so that they did not put excessive pressure on the gums<br>and observed changes in the gum tissue.<br>Comparing the photos, you can see that the gum shape changed between the early stage of treatment and later,<br>after some time had passed.<br>However, adjusting the shape of the temporary teeth does not mean that every black triangle disappears or<br>that the gum between the teeth is always filled in again.<br>The shape of the gum between teeth is affected by many factors, such as the alveolar bone, the position of the contact point, the shape of the teeth and restorations,<br>and the condition of the periodontal tissue.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1146\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-1.jpg\" alt=\"Non-vital whitening of the discolored front teeth, step 1\" class=\"wp-image-1146\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-1.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-1-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-1-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1147\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-2.jpg\" alt=\"Non-vital whitening of the discolored front teeth, step 2\" class=\"wp-image-1147\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-2.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-2-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-2-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1148\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-3.jpg\" alt=\"Non-vital whitening of the discolored front teeth, step 3\" class=\"wp-image-1148\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-3.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-3-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-3-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 wp-block-gallery-7 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1149\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-4.jpg\" alt=\"Non-vital whitening of the discolored front teeth, step 4\" class=\"wp-image-1149\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-4.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-4-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-4-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"258\" data-id=\"1150\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-5.jpg\" alt=\"Non-vital whitening of the discolored front teeth, step 5\" class=\"wp-image-1150\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-5.jpg 386w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-5-300x201.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-whitening-5-18x12.jpg 18w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">January 10 \/ January 16 \/ January 22, 2026<br>February 11 \/ February 24, 2026: non-vital whitening process<\/p>\n\n\n\n<h2 id=\"sec-5\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">We Whitened the Discolored Front Teeth From the Inside (Non-Vital Whitening)<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">When we removed the existing crowns, the color of the front teeth that had undergone root canal treatment<br>had darkened compared with the neighboring teeth.<br>In such cases, before making the final crowns, to reduce the dark tone of the tooth itself,<br>non-vital whitening can be considered.<br>Non-vital whitening is a treatment in which a whitening agent is applied inside a tooth that has had root canal treatment<br>to improve the discoloration.<br>In this patient, we checked the change in tooth color while she visited about once a week,<br>and carried out non-vital whitening for more than a month.<br>As treatment progressed, you can see the dark tooth becoming lighter.<br>The number of sessions, the duration, and the degree of color change vary from person to person, and even after treatment<br>the color may change again.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"773\" height=\"516\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-temp.jpg\" alt=\"Temporary teeth in their final shape, checked before the final crowns\" class=\"wp-image-1151\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-temp.jpg 773w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-temp-300x200.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-temp-768x513.jpg 768w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-temp-18x12.jpg 18w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Temporary teeth in their final shape, March 11, 2026<\/p>\n\n\n\n<h2 id=\"sec-6\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">We Checked the Shape With Temporary Teeth Before the Final Crowns<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">After finishing root canal retreatment and non-vital whitening and checking the gums, we made temporary teeth that took the shape of the final restorations<br>into account.<br>For front teeth, rather than making the final crowns right away, the temporary stage lets us check the length and width of the teeth,<br>their alignment, and how well they harmonize with the neighboring teeth.<br>For this patient too, we checked the shape of the temporary teeth, adjusted what was needed, and then<br>made the final zirconia crowns.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"sdc-case-banner\" style=\"background:#000;color:#fff;padding:28px 24px;text-align:center;margin:0 0 8px\"><div style=\"font-size:.95rem;font-weight:700\">Treatment Stage 4<\/div><div style=\"border-top:2px dotted #888;width:60%;margin:8px auto\"><\/div><div style=\"font-size:1.6rem;font-weight:700;line-height:1.3\">Treatment Result<\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"773\" height=\"516\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-crown.jpg\" alt=\"Front view after placing four zirconia crowns on the front teeth\" class=\"wp-image-1152\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-crown.jpg 773w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-crown-300x200.jpg 300w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-crown-768x513.jpg 768w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/smile-case-anterior-crown-retreat-final-crown-18x12.jpg 18w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Final zirconia crowns, March 11, 2026<\/p>\n\n\n\n<h2 id=\"sec-7\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">We Completed Four Zirconia Crowns on the Front Teeth<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">This is how the final crowns look once placed.<br>In this treatment, we did not simply replace the old crowns with new ones,<br>but proceeded in the following order: removing the existing crowns \u2192 checking the teeth and gums \u2192 root canal retreatment \u2192 non-vital whitening \u2192 checking the gums and restoration shape with temporary teeth \u2192 making the final zirconia crowns<br>in that order.<br>After placing the final crowns, we checked that no cement remained around the gums and cleaned up where needed.<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Before treatment, we needed to check the shape of the existing front crowns and gums, and the condition around the root tips of the<br>root canal-treated teeth, together.<br>After treatment, after root canal retreatment and non-vital whitening, new front crowns were placed,<br>and you can see how they look.<\/p>\n\n\n\n<h2 id=\"sec-8\" class=\"wp-block-heading has-text-align-center\" style=\"color:#0b9b3f;font-size:1.15rem\">Old Front Tooth Crowns: Is Replacing Only the Crown Enough?<\/h2>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Even if a problem develops with an old front tooth crown, replacing only the crown is not always the answer.<br>The treatment order must be decided after checking together the condition of the tooth beneath the existing crown, whether it has had root canal treatment, the tissue around the root, the gums, and tooth discoloration.<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">As with this patient, if a problem is found around the root tip of a root canal-treated tooth,<br>root canal retreatment can be considered first, and if the discoloration of the root canal-treated front tooth is judged likely to affect the color of the final restoration, non-vital whitening may also be considered.<br>It is also important to consider not only the color and shape of the teeth but also the relationship between the crown and the gums, and whether the shape is easy for the patient to keep clean.<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">The before-and-after photos in this case were published with the patient's consent.<br>Treatment methods and results vary from person to person. Symptoms may persist after root canal retreatment or additional treatment may be needed, the response and number of sessions for non-vital whitening vary with the condition of the tooth and the color may change again afterward, and sensitivity, discomfort, or fracture or loss of the restoration may occur even after crown treatment, so the specific treatment method is decided after an examination.<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Related cases:<br><a href=\"https:\/\/smiledigitaldc.com\/en\/anterior-crown-root-only-tooth-preservation-case\/\">Seomyeon, Busan Front Tooth Crown: Re-Treating a Root-Only Tooth While Preserving It<\/a><br><a href=\"https:\/\/smiledigitaldc.com\/en\/anterior-crown-pfm-to-zirconia-retreatment-case\/\">Front Tooth Crown in Busan Seomyeon: Retreating an Old PFM Crown with a Zirconia Crown<\/a><br><a href=\"https:\/\/smiledigitaldc.com\/en\/anterior-crown-nonvital-bleaching-gum-surgery-case\/\">Front Tooth Crown in Seomyeon, Busan: Non-Vital Tooth Whitening and Gum Surgery Together<\/a><\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Related information: <a href=\"\/en\/oneday-crown\/\">Same-day crown &amp; one-day restoration guide<\/a> \u00b7 General dental information is also available on the <a href=\"https:\/\/www.kda.or.kr\/\" target=\"_blank\" rel=\"noopener\">Korean Dental Association<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"968\" height=\"1024\" src=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026-968x1024.webp\" alt=\"Map to Smile Digital Dental Clinic and office hours\" class=\"wp-image-1452\" srcset=\"https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026-968x1024.webp 968w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026-283x300.webp 283w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026-768x813.webp 768w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026-11x12.webp 11w, https:\/\/smiledigitaldc.com\/wp-content\/uploads\/2026\/10\/sdc-directions-map-2026.webp 1219w\" sizes=\"(max-width: 968px) 100vw, 968px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>A woman in her 40s who visited with sensitivity and gum bleeding around front tooth crowns placed eight years earlier was treated with root canal retreatment, non-vital whitening, and zirconia crowns.<\/p>","protected":false},"author":1,"featured_media":1132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case"],"_links":{"self":[{"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/posts\/1153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/comments?post=1153"}],"version-history":[{"count":7,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/posts\/1153\/revisions"}],"predecessor-version":[{"id":1617,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/posts\/1153\/revisions\/1617"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/media\/1132"}],"wp:attachment":[{"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/media?parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/categories?post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smiledigitaldc.com\/en\/wp-json\/wp\/v2\/tags?post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}