![]() ![]() There is more material left on rotary files than on hand files (1). ![]() Last, we will quickly look at the legal aspects of reusing rotary files in different parts of the world.ĭebris is obviously left on endodontic files after use: it generally consists of dentin shavings, remaining pulp tissue, bacteria and, possibly, endodontic materials previously used for obturation, in cases of retreatment. Third, the Literature on the possibility of prion infection on rotary instruments will be investigated. Second, we will look at studies on sterilization effectiveness. First, the efficacy of cleaning methods on rotary files will be addressed. We will now look at the microbiological implications of reusing endodontic rotary files and the risk of cross-contamination. Sterilization has no effect on torsional fracture resistance. So, smaller files might need to be discarded faster than larger ones. Sterilization has no effect on torsional fracture resistance, but data is not clear on multiple uses. ![]() Sterilization seems to actually help the cyclic fatigue resistance. Surface changes are seen on a microscopic level after a few uses or after several sterilization cycles, but that these changes did not influence the clinical cutting efficiency of rotary files.Ĭyclic fatigue resistance will diminish with multiple uses, but files seem to be able to withstand use in 4 to 9 cases. In our first article looking at the mechanical properties of rotary files, it was determined that: This article is the second part of our review to determine if rotary files should only be used once. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |