{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T03:47:35Z","timestamp":1768276055723,"version":"3.49.0"},"reference-count":32,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2024,7,30]],"date-time":"2024-07-30T00:00:00Z","timestamp":1722297600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Esthet Restor Dent"],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Two intra\u2010coronal preparation designs with varying extensions of cuspal coverage can perform differently regarding their fracture resistance against introral forces.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Two materials (IPS e\u2010max CAD [EX], VITA ENAMIC [EN]), and two different preparation designs (EX\u2010D1), (EX\u2010D2), (EN\u2010D1), and (EN\u2010D2) were investigated to compare their fracture resistance. A total of 40 (<jats:italic>n<\/jats:italic>\u2009=\u200940) caries free human mandibular molars were used. All the prepared samples were scanned using CEREC Omnicam scanner and the preparations were checked by the software for any sharpness and undercuts before restoration designing and fabrication. All restorations were milled using Cerec MCXL 4.4 milling machine. Duo\u2010Link resin cement was used for cementation. After thermocycling and chewing simulation, all samples were loaded in the Universal testing machine in order to evaluate fracture resistance of all samples.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Fracture resistance testing revealed that e\u2010max CAD (2134\u2009N) showed statistically significantly higher mean fracture resistance values than Vita Enamic (1728\u2009N). On the other hand, there was no statistically significant difference between mean fracture resistances between the two tested designs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Within the confines of this investigation, it can be said that although preparation design had no appreciable impact on fracture resistance, the CAD\/CAM ceramic material utilized did.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical Significance<\/jats:title><jats:p>When restoring compound cavitties indirectly; a conservative defect oriented approach should be used. Glass Ceramic are prefered as restorative material.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jerd.13286","type":"journal-article","created":{"date-parts":[[2024,7,30]],"date-time":"2024-07-30T08:44:47Z","timestamp":1722329087000},"page":"1459-1465","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The effect of different materials and cavity designs on fracture resistance of ceramic partial coverage"],"prefix":"10.1111","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5865-1557","authenticated-orcid":false,"given":"Mahmoud","family":"Attia","sequence":"first","affiliation":[{"name":"Fixed Prosthodontic Department, Faculty of Dentistry October University for Modern Sciences and Arts  Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nadia","family":"Fahmy","sequence":"additional","affiliation":[{"name":"Fixed Prosthodontic Department, Faculty of Dentistry October University for Modern Sciences and Arts  Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atef","family":"Shaker","sequence":"additional","affiliation":[{"name":"Fixed Prosthodontic Department, Faculty of Dentistry Cairo University  Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tarek","family":"Salah","sequence":"additional","affiliation":[{"name":"Fixed Prosthodontic Department, Faculty of Dentistry Ain Shams University  Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,30]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034510381263"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph17207582"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.12384"},{"issue":"2","key":"e_1_2_12_5_1","first-page":"121","article-title":"Fracture strength of restored premolars","volume":"20","author":"Camacho GB","year":"2007","journal-title":"Am J Dent"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.11607\/prd.3519"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.18502\/fid.v17i8.4126"},{"issue":"6","key":"e_1_2_12_8_1","first-page":"409","article-title":"Diagnosis, therapy, and prevention of the cracked tooth syndrome","volume":"34","author":"Geurtsen W","year":"2003","journal-title":"Quintessence Int"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1590\/1678-7757-2018-0004"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.4103\/njcp.njcp_424_17"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.2341\/06\u201070"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2006.03.022"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.4012\/dmj.2009\u2010140"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/jopr.12527"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2015.09.009"},{"issue":"2","key":"e_1_2_12_16_1","first-page":"275","article-title":"Recent advances in composite CAD\/CAM blocks","volume":"11","author":"Mainjot A","year":"2016","journal-title":"Int J Esthet Dent"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.2147\/CCIDE.S42016"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034516652848"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/jopr.12376"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2014.02.019"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034513511972"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2013.01.002"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.4317\/jced.52521"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2004.03.009"},{"issue":"5","key":"e_1_2_12_25_1","first-page":"560","article-title":"Partial ceramic crowns: influence of preparation design and luting material on internal adaptation","volume":"29","author":"Federlin M","year":"2004","journal-title":"Oper Dent"},{"key":"e_1_2_12_26_1","doi-asserted-by":"publisher","DOI":"10.3390\/coatings12121931"},{"issue":"5","key":"e_1_2_12_27_1","first-page":"387","article-title":"In vitro fracture force and marginal adaptation of ceramic crowns fixed on natural and artificial teeth","volume":"13","author":"Rosentritt M","year":"2000","journal-title":"Int J Prosthodont"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.12018"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2005.04.024"},{"key":"e_1_2_12_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0109\u20105641(03)00002\u20102"},{"key":"e_1_2_12_31_1","doi-asserted-by":"publisher","DOI":"10.1111\/jopr.12787"},{"key":"e_1_2_12_32_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.bdj.4813036"},{"key":"e_1_2_12_33_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmbbm.2023.106096"}],"container-title":["Journal of Esthetic and Restorative Dentistry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jerd.13286","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,10,9]],"date-time":"2024-10-09T15:58:40Z","timestamp":1728489520000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/jerd.13286"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,7,30]]},"references-count":32,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2024,10]]}},"alternative-id":["10.1111\/jerd.13286"],"URL":"https:\/\/doi.org\/10.1111\/jerd.13286","archive":["Portico"],"relation":{},"ISSN":["1496-4155","1708-8240"],"issn-type":[{"value":"1496-4155","type":"print"},{"value":"1708-8240","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,7,30]]},"assertion":[{"value":"2024-03-13","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-07-12","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-07-30","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}