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  • Title: [A study of ultrasonic scaler. The effect of the different frequencies of the ultrasonics in the experimental calculus removal and roughness of the metallic plate after scaling].
    Author: Ueda M, Inada Y, Teranishi Y, Yamaoka A, Iwai N, Kohno W, Kusunoki K, Konishi K.
    Journal: Nihon Shishubyo Gakkai Kaishi; 1988 Dec; 30(4):1122-7. PubMed ID: 3078005.
    Abstract:
    In an attempt to determine how the degree of the experimental calculus removal on the metallic plate and its roughness after scaling would be affected by ultrasonics under high or low frequency, quantitative measurement and morphological observation were made. The results obtained were as follows: 1. On the calculus removal, larger effect was obtained by high frequency unit than low frequency. 2. On the roughness of the metallic plate after scaling, larger defect was observed by high frequency unit than low frequency. 3. Scanning electron microscopically, strip like defects were observed under low frequency unit, while exfoliation of the metallic plate in addition to the strip like defects were observed under high frequency.
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