A Roughness Study of Ytterbium-Doped Potassium Yttrium Tungstate (YB: KYW) Thin-Disk Femtosecond Ablated Dentin. - Jing Liu; Hu Chen; Wenqi Ge; Yongbo Wang; Yuchun Sun; Yong Wang; Peijun Lü (Journal of Lasers in Medical Sciences, 2014)