{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:44:19Z","timestamp":1790729059328,"version":"4.1.0"},"reference-count":47,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2022,7,20]],"date-time":"2022-07-20T00:00:00Z","timestamp":1658275200000},"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":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>Zirconia implants are assumed to satisfy the esthetic requirements that titanium implants cannot meet, however, there are not enough studies in the literature about narrow\u2010diameter and angled zirconia implants that can be preferred especially in the anterior region. This in vitro study aimed to evaluate the fatigue resistance and fracture strength of narrow\u2010diameter zirconia implants with angled abutments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Forty\u2010eight one\u2010piece experimental zirconia implants and monolithic zirconia crowns were produced from 3\u2010YTZP blanks. The implant diameters (3.0 or 3.7\u2009mm) and the restoration types were determined according to three intraoral regions (upper central incisors, lower central incisors, and upper canine), and abutments were designed as straight or 15\u00b0 angled. The samples were subjected to chewing simulation corresponding to 5\u2009years of clinical performance and then the static loading test. The survival rates of groups were measured by the Kaplan\u2013Meier log\u2010rank test, and the fracture load values were estimated by using Kruskal\u2013Wallis and Mann\u2013Whitney <jats:italic>U<\/jats:italic> tests (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All 3.0\u2009mm diameter implants failed the fatigue test. The fatigue resistance of the implants with angled abutments was significantly lower than the straight abutments, and different crown designs were found to affect survival rates significantly. The fracture strengths of the surviving groups were above the maximum physiological chewing forces, and the differences were not significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The implant diameter, abutment angle, and restoration type have a significant effect on the fatigue behavior of zirconia implants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical Significance<\/jats:title><jats:p>The fracture strengths of the one\u2010piece zirconia implants with a 3.7\u2009mm diameter and a 15\u00b0 abutment angle are above the chewing forces for the anterior intraoral region.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jerd.12944","type":"journal-article","created":{"date-parts":[[2022,7,20]],"date-time":"2022-07-20T07:29:21Z","timestamp":1658302161000},"page":"1060-1067","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Fatigue resistance and fracture strength of narrow\u2010diameter 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