{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T15:50:05Z","timestamp":1770479405222,"version":"3.49.0"},"reference-count":43,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2010,5,4]],"date-time":"2010-05-04T00:00:00Z","timestamp":1272931200000},"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":["Int Endodontic J"],"published-print":{"date-parts":[[2010,6]]},"abstract":"<jats:sec><jats:label\/><jats:p><jats:bold>Bitter K, Meyer\u2010Lueckel H, Fotiadis N, Blunck U, Neumann K, Kielbassa AM, Paris S.<\/jats:bold> Influence of endodontic treatment, post insertion, and ceramic restoration on the fracture resistance of maxillary premolars. <jats:italic>International Endodontic Journal<\/jats:italic>, <jats:bold>43<\/jats:bold>, 469\u2013477, 2010.<\/jats:p><\/jats:sec><jats:sec><jats:title>Abstract<\/jats:title><jats:p><jats:bold>Aim\u2002<\/jats:bold> To investigate the effects of endodontic treatment, post placement and ceramic restoration type on the fracture resistance of premolars.<\/jats:p><jats:p><jats:bold>Methodology\u2002<\/jats:bold> One hundred and twenty teeth maxillary premolars were allocated to four groups (A\u2013D; <jats:italic>n<\/jats:italic>\u2003=\u200330). In group A, mesio\u2010occlusal\u2010distal\u2010inlays with a buccal and palatal wall of 2\u2003mm (MOD), in group B partial onlays with palatal cusp coverage and in group C total onlays with buccal and palatal cusp coverage were prepared. Group D served as untreated controls. Groups A\u2013C were divided into three subgroups (<jats:italic>n<\/jats:italic>\u2003=\u200310): (i) teeth received solely the described preparations, (ii) teeth were root filled, (iii) teeth were root filled and quartz fibre posts were placed. Teeth were restored using Computer\u2010assisted design\/computer\u2010assisted machining\u2010ceramic\u2010restorations and subjected to thermo\u2010mechanical\u2010loading; subsequently, the buccal cusp was loaded until fracture.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> Group D revealed significantly higher fracture resistance [mean (standard deviation)] [738 (272) N] compared to all other groups (<jats:italic>P<\/jats:italic>\u2003&lt;\u20030.05; <jats:italic>post hoc<\/jats:italic> test Dunnett). For groups A\u2013C, fracture resistance was significantly affected by the restoration type (<jats:italic>P<\/jats:italic>\u2003=\u20030.043) and endodontic treatment\/post placement (<jats:italic>P<\/jats:italic>\u2003=\u20030.039; 2\u2010way <jats:sc>anova<\/jats:sc>). Group A [380 (146) N] showed significantly lower fracture resistance compared to group B [470 (158) N] (<jats:italic>P<\/jats:italic>\u2003=\u20030.048; <jats:italic>post hoc<\/jats:italic> test Tukey). Compared to non\u2010endodontically treated teeth [487 (120) N], root filled teeth revealed significantly lower fracture resistance [389 (171) N] (<jats:italic>P<\/jats:italic>\u2003=\u20030.031).<\/jats:p><jats:p><jats:bold>Conclusion\u2002<\/jats:bold> The restoration of cavities with a remaining wall thickness of 2\u2003mm using ceramic MOD\u2010inlays is inferior with respect to the fracture resistance compared to partial onlay restorations. Root filled teeth without post placement show lower fracture resistance compared to non\u2010endodontically treated teeth.<\/jats:p><\/jats:sec>","DOI":"10.1111\/j.1365-2591.2010.01701.x","type":"journal-article","created":{"date-parts":[[2010,5,5]],"date-time":"2010-05-05T10:52:28Z","timestamp":1273056748000},"page":"469-477","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Influence of endodontic treatment, post insertion, and ceramic restoration on the fracture resistance of maxillary premolars"],"prefix":"10.1111","volume":"43","author":[{"given":"K.","family":"Bitter","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.","family":"Meyer\u2010Lueckel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N.","family":"Fotiadis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"U.","family":"Blunck","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Neumann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. 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