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Kirety sztywne GRACEY
Dzięki połączeniu dużej sztywności z ich filigranowo-delikatnymi
końcówkami, można za pomocą sztywnych skrobaczek dokładnie i
efektywnie usunąć szczególnie uporczywy osad nazębny.
Nie jest już konieczne przeprowadzanie czasochłonnego powtórnego skalingu za pomocą elastycznych kiret.
Elastyczne kirety powinny być zawsze stosowane w celu dokończenia wygładzania powierzchni korzenia.
Kształty Gracey: 12/13 i 11/14 pozwalają w szczególności zaoszczędzić czas, ponieważ przy zastosowaniu kształtu 12/13 wszystkie powierzchnie środkowo-dalsze w bocznym obszarze zęba, np. w pierwszej ćwiartce, mogą być poddane pełnej obróbce w kierunku przedsionkowym w jednym kroku bez konieczności zmiany instrumentu. Tylko w przypadku zmiany na kierunek podniebieniowy stosowany jest kształt 11/14.
Druga ćwiartka rozpoczyna się oczywiście od kształtu 11/14 dla rejonów środkowo-dalszych w kierunku przedsionkowym, etc.
