Material investigation for manufacturing of reference step gauges for CT scanning verification

Publication: ResearchArticle in proceedings – Annual report year: 2012


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This work deals with the study of stability and material investigation for manufacturing of step gauges for CT scanning verification. Four replica step gauges were fabricated using a bisacryl material for dental applications and the stability over five months was monitored using a tactile CMM. The material was unstable, probably due to a modification of the chemical composition which lowered the hardness. New
step gauges were manufactured through milling. Polyetheretherketone (PEEK) and Polyp-phenylenesulphide (PPS with 40% glass) fulfil the requirements regarding hardness and mechanical properties and two series of five step gauges (one series for each material) were manufactured by milling. Results show a significant improvement in terms of form stability and surface geometry quality of the new step
gauges with respect to the replica step gauges in Luxabite, as reported below.
Original languageEnglish
Title of host publicationProceedings of the 12th euspen International Conference
Number of pages4
Publication date2012
StatePublished - 2012
Event12th euspen International Conference - Stockholm, Sweden


Conference12th euspen International Conference
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ID: 9812025