{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T04:35:39Z","timestamp":1785213339202,"version":"3.55.0"},"reference-count":42,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2025,9,8]],"date-time":"2025-09-08T00:00:00Z","timestamp":1757289600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"DEANSHIP OF SCIENTIFIC RESEARCH IN IMAM ABDULRAHMAN BIN FAISAL UNIVERSITY","award":["2017-122-Dent"],"award-info":[{"award-number":["2017-122-Dent"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFB"],"abstract":"<jats:p>Aim: To compare the fracture resistance of teeth with varying degrees of residual coronal dentine after restoration using two fibre-reinforced composite core materials. Materials and Methods: Seventy extracted human lower premolars were divided into four groups: sound (control), one missing proximal wall (Cl-II), two missing proximal walls (MOD), and endocrown (EC). Subgroups were restored with either a short fibre-reinforced flowable composite (EverX Flow) or an experimental fibre-reinforced composite. Except for the control, teeth underwent endodontic treatment and were restored accordingly. Fracture resistance was tested using a universal testing machine. Statistical analysis compared fracture resistance across groups. Results: Teeth in EC exhibited the highest fracture resistance (1153.43 \u00b1 332.52 N), comparable to sound teeth (1114.03 \u00b1 185.58 N) and not significantly different from the experimental composite group (1006.89 \u00b1 200.51 N) (p = 0.304). Cl-II restorations with EverX had significantly lower strength (652.48 \u00b1 314.04 N) compared to MOD (773.02 \u00b1 261.18 N) and EC (p &lt; 0.05). The experimental composite showed a similar trend, with MOD having the lowest strength (408.6 \u00b1 168.85 N). Significant differences were noted between materials in the MOD group (p = 0.009). Scanning electron microscopy revealed distinct fracture patterns. Conclusions: Endocrowns using direct fibre-reinforced composites provided protection for endodontically treated teeth with higher fracture resistance compared to teeth with MOD and Cl-II cavities. This gives direct composite endocrowns a potential for high-stress applications, though design and material selection remain critical.<\/jats:p>","DOI":"10.3390\/jfb16090335","type":"journal-article","created":{"date-parts":[[2025,9,9]],"date-time":"2025-09-09T12:15:17Z","timestamp":1757420117000},"page":"335","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Comparison of Commercial and Experimental Fibre-Reinforced Composites in Restoring Endodontically Treated Teeth with Minimal Coronal Dentine: An In Vitro Study"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1019-3171","authenticated-orcid":false,"given":"Amre R","family":"Atmeh","sequence":"first","affiliation":[{"name":"Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai P.O. Box 505055, United Arab Emirates"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-4514-6343","authenticated-orcid":false,"given":"Faisal","family":"Masaud","sequence":"additional","affiliation":[{"name":"College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-5434-0042","authenticated-orcid":false,"given":"Luba","family":"AlMuhaish","sequence":"additional","affiliation":[{"name":"College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-6833-5576","authenticated-orcid":false,"given":"Abdulkarim","family":"Alanazi","sequence":"additional","affiliation":[{"name":"College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-5951-1722","authenticated-orcid":false,"given":"Hadeel","family":"Almutiri","sequence":"additional","affiliation":[{"name":"College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2421-0753","authenticated-orcid":false,"given":"Saqib","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7574-7887","authenticated-orcid":false,"given":"Hassan","family":"Almoqhawi","sequence":"additional","affiliation":[{"name":"Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2165-800X","authenticated-orcid":false,"given":"Abdul Samad","family":"Khan","sequence":"additional","affiliation":[{"name":"Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,9,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3233","DOI":"10.1007\/s00784-023-04938-y","article-title":"Long-term tooth survival and success following primary root canal treatment: A 5- to 37-year retrospective observation","volume":"27","author":"Vignoletti","year":"2023","journal-title":"Clin. Oral Investig."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"464","DOI":"10.1016\/j.jpor.2017.02.001","article-title":"Fracture resistance of endodontically treated teeth restored with short fiber composite used as a core material\u2014An in vitro study","volume":"61","author":"Garlapati","year":"2017","journal-title":"J. Prosthodont. 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