Figure 3: (A) Angled brush with extra-hard nylon bristles (article 8M140001, Medimex, Limburg, Germany); (B) Large (35 mm) and small (25 mm) nylon head brush (article 09098, Keysurgical, Lensahn, Germany); (C) Cleaning the probes by submerging in Neodisher Mediclean Forte instrument cleaning solution.