Kim, S-Y; Kang, M-K; Kang, S-M; Kim, H-E (2018-03-13). "Effects of ultrasonic instrumentation on enamel surfaces with various defects". International Journal of Dental Hygiene. 16 (2): 219–224. doi:10.1111/idh.12339. ISSN1601-5029. PMID29532597. S2CID4921379.
Kim, S-Y; Kang, M-K; Kang, S-M; Kim, H-E (2018-03-13). "Effects of ultrasonic instrumentation on enamel surfaces with various defects". International Journal of Dental Hygiene. 16 (2): 219–224. doi:10.1111/idh.12339. ISSN1601-5029. PMID29532597. S2CID4921379.
Kim, S-Y; Kang, M-K; Kang, S-M; Kim, H-E (2018-03-13). "Effects of ultrasonic instrumentation on enamel surfaces with various defects". International Journal of Dental Hygiene. 16 (2): 219–224. doi:10.1111/idh.12339. ISSN1601-5029. PMID29532597. S2CID4921379.
Kim, S-Y; Kang, M-K; Kang, S-M; Kim, H-E (2018-03-13). "Effects of ultrasonic instrumentation on enamel surfaces with various defects". International Journal of Dental Hygiene. 16 (2): 219–224. doi:10.1111/idh.12339. ISSN1601-5029. PMID29532597. S2CID4921379.