Prevalence of an incompetent lip seal during growth periods throughout Japan: a large-scale, survey-based, cross-sectional study by Yukiko Nogami, Issei Saitoh, Emi Inada, Daisuke Murakami, Yoko Iwase, Naoko Kubota, Yuki Nakamura, Masami Kimi, Haruaki Hayasaki, Youichi Yamasaki, Yasutaka Kaihara

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Tooth brushing for oral prophylaxis by Haruaki Hayasaki, DDS, PhD, Issei Saitoh, DDS, PhD, Kuniko Nakakura-Ohshima, DDS, PhD, Mika Hanasaki, DDS, Yukiko Nogami, DH, Tsutomu Nakajima, DDS, Emi Inada, DDS, PhD, Tomonori Iwasaki, DDS, PhD, Yoko Iwase, DDS, PhD, Tadashi Sawami, DDS, PhD, Katsushige Kawasaki, DDS, PhD, Nozomi Murakami, DDS, Tomoya Murakami, DDS, Mie Kurosawa, DDS, Masami Kimi, DDS, Akiko Kagoshima, DDS, Miki Soda, DDS, Youich Yamasaki, DDS, PhD

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