{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T22:42:38Z","timestamp":1791931358300,"version":"4.3.4"},"reference-count":54,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,4,15]],"date-time":"2023-04-15T00:00:00Z","timestamp":1681516800000},"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":["Journal of Prosthodontics"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>This study aimed to assess the fracture resistance of monolithic zirconia\u2010reinforced lithium silicate laminate veneers (LVs) fabricated on various incisal preparation designs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Sixty maxillary central incisors with various preparation designs were 3D\u2010printed, 15 each, including preparation for: (1) LV with feathered\u2010edge design; (2) LV with butt\u2010joint design; (3) LV with palatal chamfer; and (4) full\u2010coverage crown. Restorations were then designed and manufactured from zirconia\u2010reinforced lithium silicate (ZLS) following the contour of a pre\u2010operation scan. Restorations were bonded to the assigned preparation using resin cement and following the manufacturer's instructions. Specimens were then subjected to 10,000 thermocycles at 5 to 55\u00b0C with a dwell time of 30\u00a0s. The fracture strength of specimens was then assessed using a universal testing machine at a crosshead speed of 1.0\u00a0mm\/min. One\u2010way ANOVA and Bonferroni correction multiple comparisons were used to assess the fracture strength differences between the test groups (<jats:italic>\u03b1<\/jats:italic>\u00a0=\u00a00.001). Descriptive fractographic analysis of specimens was carried out with scanning electron microscopy images.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Complete coverage crown and LV with palatal chamfer design had the highest fracture resistance values (781.4\u00a0\u00b1\u00a0151.4 and 618.2\u00a0\u00b1\u00a0112.6\u00a0N, respectively). Single crown and LV with palatal chamfer had no significant difference in fracture strength (<jats:italic>p<\/jats:italic>\u00a0&gt;\u00a005). LV with feathered\u2010edge and butt\u2010joint designs provided significantly (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a005) lower fracture resistance than complete coverage crown and LV with palatal chamfer design.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The fracture resistance of chairside milled ZLS veneers was significantly influenced by the incisal preparation designs tested. Within the limitation of this study, when excessive occlusal forces are expected, LV with palatal chamfer display is the most conservative method of fabricating an indirect restoration.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.13689","type":"journal-article","created":{"date-parts":[[2023,4,4]],"date-time":"2023-04-04T18:09:46Z","timestamp":1680631786000},"page":"281-287","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Effect of incisal preparation design on the fracture strength of monolithic zirconia\u2010reinforced lithium silicate laminate veneers"],"prefix":"10.1111","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7437-4855","authenticated-orcid":false,"given":"Carlos A.","family":"Jurado","sequence":"first","affiliation":[{"name":"Department of Prosthodontics The University of Iowa College of Dentistry and Dental Clinics  Iowa City Iowa 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