{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T16:20:44Z","timestamp":1792254044109,"version":"4.4.0"},"reference-count":39,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2020,1,1]],"date-time":"2020-01-01T00:00:00Z","timestamp":1577836800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Applied Biomaterials &amp; Functional Materials"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The aim was to compare the fracture strength of Molar endocrowns fabricated from different all-ceramic materials and various preparation designs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods:<\/jats:title>\n                    <jats:p>Ninety extracted human molar teeth were root canal treated and randomly divided into three groups according to the all ceramic materials used for fabrication of the endocrowns ( n\u2009=\u200930): (1) Lithium disilicate (IPS e.max Press); (2) Polymer infiltrated ceramic (Vita Enamic); (3) High translucency zirconia (Ceramill Zolid HT). Each group was subdivided into 3 subgroups ( n\u2009=\u200910) according to the preparation design as 2\u2009mm occlusal reduction, 4.5\u2009mm occlusal reduction, and 4.5\u2009mm occlusal reduction with 2\u2009mm radicular extension. The endocrowns from each material were fabricated and surface treated according to the manufacturer\u2019s recommendations. After cementation with self-adhesive resin luting cement, the specimens were stored in a humid environment for 72\u2009hours and subsequently subjected to 5000 thermal cycles. After, a compressive, static-axial load was applied using a universal testing machine until failure. Load-to-failure was recorded (N) and the specimens were examined under a stereomicroscope to determine the failure type. The data was statistically analyzed using One-way ANOVA and Tukey HSD tests at p &lt; 0.05.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The Lithium Disilicate endocrowns recorded the higher mean fracture strength for 4.5\u2009mm occlusal thickness and 2\u2009mm radicular extension at 3770.28 N and 3877.40 correspondingly. The High translucency zirconia endocrowns at conventional 2\u2009mm thickness showed the highest mean fracture load (3533.34 N). Even though polymer infiltrated ceramic endocrowns displayed comparatively lesser fracture load; they recorded the predominantly favorable fractures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Increased occlusal thickness showed a significant improvement in fracture strength of lithium disilicate and polymer infiltrated ceramic molar endocrowns. Although the 2\u2009mm radicular extension had the substantial enhancement of fracture strength in high translucency zirconia, it resulted in more unfavorable failure types.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/2280800020947329","type":"journal-article","created":{"date-parts":[[2020,11,6]],"date-time":"2020-11-06T20:57:09Z","timestamp":1604696229000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":24,"title":["Effect of different preparation designs and all ceramic materials on fracture strength of molar endocrowns"],"prefix":"10.1177","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7871-1513","authenticated-orcid":false,"given":"Satheesh B","family":"Haralur","sequence":"first","affiliation":[{"name":"Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alaa Ali","family":"Alamrey","sequence":"additional","affiliation":[{"name":"College of Dentistry, King Khalid University, Abha, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shatha Abdulrahman","family":"Alshehri","sequence":"additional","affiliation":[{"name":"College of Dentistry, King Khalid University, Abha, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danyah Saeed","family":"Alzahrani","sequence":"additional","affiliation":[{"name":"College of Dentistry, King Khalid University, Abha, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed","family":"Alfarsi","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2020,11,5]]},"reference":[{"key":"bibr1-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/j.jdent.2012.01.006"},{"key":"bibr2-2280800020947329","first-page":"255","volume":"1","author":"Bindl A","year":"1999","journal-title":"J Adhes Dent"},{"key":"bibr3-2280800020947329","first-page":"99","volume":"39","author":"Lander E","year":"2008","journal-title":"Quintessence Int"},{"key":"bibr4-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/0022-3913(94)90438-3"},{"key":"bibr5-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/j.jdent.2016.07.005"},{"key":"bibr6-2280800020947329","first-page":"313","volume":"16","author":"Gohring TN","year":"2003","journal-title":"Am J Dent"},{"key":"bibr7-2280800020947329","first-page":"333","volume":"11","author":"M\u00f6rmann WH","year":"1998","journal-title":"Int J Prosthodont"},{"key":"bibr8-2280800020947329","first-page":"27","volume":"11","author":"Tsai YL","year":"1998","journal-title":"Int J Prosthodont"},{"key":"bibr9-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2016.08.023"},{"key":"bibr10-2280800020947329","first-page":"83","volume":"7","author":"Pissis P.","year":"1995","journal-title":"Pract Periodontics Aesthet Dent"},{"key":"bibr11-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/S1991-7902(09)60016-7"},{"key":"bibr12-2280800020947329","doi-asserted-by":"publisher","DOI":"10.2341\/11-105-L"},{"key":"bibr13-2280800020947329","doi-asserted-by":"publisher","DOI":"10.3109\/00016357.2013.822098"},{"key":"bibr14-2280800020947329","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2015.09.009"},{"key":"bibr15-2280800020947329","unstructured":"VITA-Zahnfabrik. 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