{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T07:39:19Z","timestamp":1792481959974,"version":"4.5.0"},"reference-count":29,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T00:00:00Z","timestamp":1767139200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T00:00:00Z","timestamp":1767139200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Dental Traumatology"],"published-print":{"date-parts":[[2026,8]]},"abstract":"ABSTRACT<\/jats:title>\n \n Background\/Aim<\/jats:title>\n Fragment reattachment is a conservative option for anterior crown fractures, yet failure after the initial procedure creates a clinical dilemma. Evidence on effective retreatment strategies is lacking. This study investigated how surface preparation and chamfer design influence fracture resistance and failure patterns in failed fragment reattachments.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods<\/jats:title>\n \n Sixty bovine mandibular incisors were sectioned 3\u2009mm below the incisal edge and reattached using a standardized protocol with adhesive and flowable composite. After thermocycling (5000\u2009cycles, 5\u00b0C\u201355\u00b0C), baseline fracture resistance was measured. Specimens were stratified by baseline values and randomly assigned to four groups (\n n<\/jats:italic>\n \u2009=\u200915): Group A\u2014bur cleaning + simple reattachment, Group B\u2014sandblasting + simple reattachment, Group C\u2014bur cleaning + external chamfer, and Group D\u2014sandblasting + external chamfer. Re\u2010reattachment used the same adhesive protocol; in Groups C and D, a 1\u2009mm external chamfer was prepared and restored with nanohybrid composite. post\u2010treatment fracture resistance was tested with a universal testing machine, and percentage improvement was calculated. The specimens were examined with a stereomicroscope, and failures were categorized as adhesive, cohesive, or mixed. data were analyzed with two\u2010way repeated measures\n ANOVA<\/jats:styled-content>\n , Bonferroni post hoc, and Chi\u2010square tests (\n p<\/jats:italic>\n \u2009<\u20090.05).\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n All groups showed significant increases in fracture resistance after re\u2010reattachment (\n p<\/jats:italic>\n \u2009<\u20090.05).\n ANOVA<\/jats:styled-content>\n revealed significant effects of time, group, and time \u00d7 group interaction (All\n p<\/jats:italic>\n \u2009<\u20090.001). Group D achieved the highest post\u2010treatment resistance, significantly greater than all others (\n p<\/jats:italic>\n \u2009<\u20090.01). Group C ranked second, while Groups A and B did not differ (\n p<\/jats:italic>\n \u2009=\u20090.111). Failure mode distribution differed significantly (\n p<\/jats:italic>\n \u2009<\u20090.001); chamfer groups (C and D) showed more cohesive\/mixed failures.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n External chamfer, especially combined with sandblasting, enhanced fracture resistance and shifted failure patterns, indicating a clinically promising strategy for failed fragment reattachments.<\/jats:p>\n <\/jats:sec>","DOI":"10.1111\/edt.70048","type":"journal-article","created":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T08:11:38Z","timestamp":1767168698000},"page":"490-498","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Managing Failed Fragment Reattachment: Influence of Surface Preparation and Chamfer Technique on Fracture Resistance"],"prefix":"10.1111","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1622-2698","authenticated-orcid":false,"given":"Vasfiye","family":"Isik","sequence":"first","affiliation":[{"name":"Department of Endodontics, Faculty of Dentistry Istanbul University\u2010Cerrahpa\u015fa Istanbul Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1272-5581","authenticated-orcid":false,"given":"Soner","family":"Sismanoglu","sequence":"additional","affiliation":[{"name":"Department of Restorative Dentistry, Faculty of Dentistry Istanbul University\u2010Cerrahpa\u015fa Istanbul Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,12,31]]},"reference":[{"issue":"4","key":"e_1_2_12_2_1","article-title":"Reattachment of Fractured Tooth: A Comprehensive Review","volume":"16","author":"Rathod P.","year":"2024","journal-title":"Cureus"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12789"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.13433"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.12456"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12613"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12578"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/26323273221101420"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.13429"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12709"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.2010.00951.x"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12605"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12888"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.2009.00855.x"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/26415275.2021.1952873"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.61186\/jrdms.10.1.25"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.3390\/ma13133026"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12903-023-02883-6"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/aej.70001"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.2010.00913.x"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.3390\/dj13010016"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.2341\/19-216-L"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms241411568"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2021.04.003"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.13183"},{"issue":"3","key":"e_1_2_12_26_1","first-page":"287","article-title":"Re\u2010Attachment of Anterior Fractured Teeth: Fracture Strength Using Different Techniques","volume":"26","author":"Reis A.","year":"2001","journal-title":"Operative Dentistry"},{"issue":"2","key":"e_1_2_12_27_1","first-page":"226","article-title":"Reattachment of Fractured Teeth: A Review of Literature Regarding Techniques and Materials","volume":"29","author":"Reis A.","year":"2004","journal-title":"Operative Dentistry"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12392"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1111\/edt.12821"},{"issue":"5","key":"e_1_2_12_30_1","article-title":"Comparative Effect of no Finish Line, Heavy Chamfer, and Shoulder Marginal Designs on the Fracture Resistance of Zirconia (Cercon) Ceramic Restoration: An In\u00a0Vitro Study","volume":"15","author":"Gavara S. G.","year":"2023","journal-title":"Cureus"}],"container-title":["Dental Traumatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/edt.70048","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/edt.70048","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/edt.70048","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T06:55:03Z","timestamp":1792479303000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/edt.70048"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,31]]},"references-count":29,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1111\/edt.70048"],"URL":"https:\/\/doi.org\/10.1111\/edt.70048","archive":["Portico"],"relation":{},"ISSN":["1600-4469","1600-9657"],"issn-type":[{"value":"1600-4469","type":"print"},{"value":"1600-9657","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,31]]},"assertion":[{"value":"2025-09-11","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-12-19","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-12-31","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}