{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T07:22:28Z","timestamp":1773904948540,"version":"3.50.1"},"reference-count":49,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2021,6,24]],"date-time":"2021-06-24T00:00:00Z","timestamp":1624492800000},"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":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To assess the mechanical stability of implants after implantoplasty and thermocyclic loading, the residual thickness of the instrumented areas and neighbouring tooth injury due to implantoplasty.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Using a phantom head simulator and maxillary model implants were subjected to an implantoplasty procedure. Thirty implants were randomly assigned to receive one of three instrumentation sequences. After instrumentation, injury on neighbouring teeth was assessed. Instrumented implants and non\u2010instrumented controls were subjected to 1.2 million cycles of thermo\u2010mechanical loading in a chewing machine. Afterwards, maximum fracture load for all implants and an additional five pristine control implants was tested.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Generally, damage of neighbour teeth was a frequent finding (33\u00a0\u00b1\u00a056% of all cases) with considerable inter\u2010group differences. No considerable inter\u2010group difference for the residual implant thickness was found for different areas assessed. No implant fractured during cyclic loading. Fracture load was reduced after cyclic loading of uninstrumented implants from 2,724\u00a0\u00b1\u00a070\u00a0N to 2,299\u00a0\u00b1\u00a0127\u00a0N, and after implantoplasty to 1,737\u00a0\u00b1\u00a0165\u00a0N, while no effect by the instrumentation sequence could be observed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Both implantoplasty and cyclic loading were shown to reduce the implants' maximum bending strength. Cyclic loading in a laboratory masticator, simulating a five\u2010year equivalent of chewing, did not result in fractured implants. Since neighbouring tooth injury was assessed often, care should be taken with the selection of suitable instruments.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.13754","type":"journal-article","created":{"date-parts":[[2021,5,25]],"date-time":"2021-05-25T07:46:01Z","timestamp":1621928761000},"page":"881-892","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Reduced fracture load of dental implants after implantoplasty with different instrumentation sequences. 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