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A milled bar was designed for the mandible on four\u00a0implants in the canine and second premolar region. Three bar materials were investigated: titanium (Ti), cobalt\u00a0chromium (CoCr), and polyetherketonketon (PEKK). Firstly, static and fatigue tests were performed based on EN ISO 14801 in a commercial permanent loading set-up. Unilateral axial force was applied on the distal extension of\u00a0the bars. Secondly, numerical models were created. Different bar materials and loading scenarios were analysed. The static fracture limit of the three materials was 1,750\u00a0N, 780\u00a0N, 310\u00a0N for Ti, CoCr, and PEKK, respectively. The W\u00f6hler curves showed comparable fatigue limits of 200\u00a0N, 160\u00a0N, and 150\u00a0N for titanium, CoCr, and PEKK, respectively. The stress at the distal extension was 2,600\u00a0MPa (Ti), 1,000\u00a0MPa (CoCr), and 270\u00a0MPa (PEKK). All loading simulations with the PEKK bar showed higher stresses in the implants and in the bone bed as well as higher displacements of the over denture in comparison to metal bars. PEKK showed different mechanical behaviour compared to Ti and CoCr. The distribution of stresses within the PEKK bar was wider than the area of loading which probably leads to fatigue of the whole bar and not only the part under load.<\/jats:p>","DOI":"10.1515\/bmt-2020-0157","type":"journal-article","created":{"date-parts":[[2020,12,22]],"date-time":"2020-12-22T14:58:49Z","timestamp":1608649129000},"page":"305-316","source":"Crossref","is-referenced-by-count":10,"title":["Experimental and numerical investigations of fracture and fatigue behaviour of implant-supported bars with distal extension made of three different materials"],"prefix":"10.1515","volume":"66","author":[{"given":"Jennifer","family":"Mochalski","sequence":"first","affiliation":[{"name":"Oral Technology , University of Bonn , Bonn , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Fr\u00f6hls","sequence":"additional","affiliation":[{"name":"Oral Technology , University of Bonn , Bonn , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ludger","family":"Keilig","sequence":"additional","affiliation":[{"name":"Oral Technology , University of Bonn , Bonn , Germany"},{"name":"Department of Prosthetic Dentistry, Preclinical Education and Materials Science , Dental School, University of Bonn , Bonn , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Bourauel","sequence":"additional","affiliation":[{"name":"Oral Technology , University of Bonn , Bonn , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Istabrak","family":"D\u00f6rsam","sequence":"additional","affiliation":[{"name":"Oral Technology , University of Bonn , Bonn , Germany"},{"name":"Department of Prosthetic Dentistry, Preclinical Education and Materials Science , Dental School, University of Bonn , Bonn , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","published-online":{"date-parts":[[2020,12,16]]},"reference":[{"key":"2023033114584592238_j_bmt-2020-0157_ref_001_w2aab3b7d132b1b6b1ab2b2b1Aa","doi-asserted-by":"crossref","unstructured":"Lambada, D, Lambada, P, Gundawar, S. 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