{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:13:12Z","timestamp":1787015592979,"version":"build-2736575974"},"reference-count":38,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2020,12,10]],"date-time":"2020-12-10T00:00:00Z","timestamp":1607558400000},"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":[[2021,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate the fatigue survival, fracture loads and failure modes of monolithic lithium disilicate screw\u2010retained crowns, attached to titanium insert, and cement\u2010retained crowns.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>\n                      Internal tapered connection implants, embedded in acrylic resin at 30\u00b0 inclination, were restored with lithium disilicate restorations, simulating a maxillary premolar (n = 20), with different designs: screw\u2010retained titanium base abutment\u2010crowns, and cement\u2010retained crowns. The specimens were submitted to cyclic mechanical loading (1.2 \u00d7 10\n                      <jats:sup>6<\/jats:sup>\n                      cycles with a load of 0\u2010250 N at 2 Hz). Surviving specimens were subjected to single load to fracture in a universal testing machine and failure modes were determined with the aid of an optical microscope. Maximum load values were analyzed statistically using the t\u2010test and differences in failure modes were analyzed using the chi\u2010squared test (\u03b1 = 0.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      All specimens survived the cyclic mechanical loading. Fracture load was significantly higher for screw\u2010retained crowns (821.69 \u00b1196.71 N) than the cement\u2010retained crowns (577.03 \u00b1 137.75 N) (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.005). Ceramic failure was the predominant mode, with no statistical difference between groups.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Screw\u2010retained and cement\u2010retained lithium disilicate crowns survived the cyclic mechanical loading. The use of titanium inserts to support a monolithic restoration enhances the fracture strength of the crown\/abutment system.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jopr.13298","type":"journal-article","created":{"date-parts":[[2020,11,27]],"date-time":"2020-11-27T06:23:56Z","timestamp":1606458236000},"page":"690-697","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Mechanical Behavior and Fracture Loads of Screw\u2010Retained and Cement\u2010Retained Lithium Disilicate Implant\u2010Supported Crowns"],"prefix":"10.1111","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2135-0563","authenticated-orcid":false,"given":"Hercules Pessin","family":"Camatta","sequence":"first","affiliation":[{"name":"Department of Dentistry University Center of Esp\u00edrito Santo\u2010UNESC  Colatina 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