{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T12:56:03Z","timestamp":1785329763363,"version":"3.55.0"},"reference-count":35,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2025,1,8]],"date-time":"2025-01-08T00:00:00Z","timestamp":1736294400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,1,8]],"date-time":"2025-01-08T00:00:00Z","timestamp":1736294400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Klinikum der Universit\u00e4t M\u00fcnchen"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Clin Oral Invest"],"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Objectives<\/jats:title>\n            <jats:p>To compare the impact of intaglio surface treatments \u2013 airborne particle abrasion and hydrofluoric acid (HF) etching \u2013 of feldspar ceramic (FEL) crowns on the fracture load (FL) and to investigate the effects of abutment materials and artificial aging. The aim was to assess whether etching could be replaced by an alternative surface roughening method.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Materials and methods<\/jats:title>\n            <jats:p>FEL crowns had their intaglio surfaces either abraded (25\u00a0\u00b5m Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>, 0.1\u00a0MPa), etched (HF, 60\u00a0s), or untreated and then bonded to CoCrMo- and polymer-abutments. FL was measured for non-aged and aged (1.2 million mastication cycles) specimens. Data were analyzed using, Weibull modulus, two-\/one-way ANOVA with Tukey HSD-post-hoc-test, t-tests, and TOST equivalence (p\u2009&lt;\u20090.05).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>For crowns bonded to CoCrMo abutments, aging affected the FL and Weibull modulus, but pretreatment methods did not. For initial specimens, airborne abraded and etched crowns were equivalent within a 400N bound, however, for aged specimens, equivalence was inconclusive. For crowns bonded to polymer-abutments, pretreatment and aging influenced the FL. Etching decreased the initial FL by over 420N compared to airborne abraded and untreated specimens. After aging, untreated crowns\u2019 FL decreased by 528N, while airborne abraded and etched specimens showed no aging effect.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p>Airborne particle abrasion of FEL crowns\u2019 intaglio surfaces did not negatively impact FL and was comparable to etched crowns. Conclusions regarding pretreatment methods and aging differed between CoCrMo- and polymer-abutments.<\/jats:p>\n            <jats:p>Clinical relevance.<\/jats:p>\n            <jats:p>Airborne particle abrasion may be an alternative procedure for the intaglio surface treatment of FEL crowns prior bonding.\n<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00784-024-06144-w","type":"journal-article","created":{"date-parts":[[2025,1,8]],"date-time":"2025-01-08T23:04:36Z","timestamp":1736377476000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Fracture load of feldspar ceramic crowns: effects of surface treatments and aging"],"prefix":"10.1007","volume":"29","author":[{"given":"Andrea","family":"Coldea","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bogna","family":"Stawarczyk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Meinen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Valerie","family":"Lankes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael V.","family":"Swain","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Malgorzata","family":"Roos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,1,8]]},"reference":[{"key":"6144_CR1","doi-asserted-by":"publisher","first-page":"1975","DOI":"10.1007\/s00784-013-1173-2","volume":"18","author":"M Federlin","year":"2014","unstructured":"Federlin M, Hiller KA, Schmalz G (2014) Effect of selective enamel etching on clinical performance of CAD\/CAM partial ceramic crowns luted with a self-adhesive resin cement. 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