Objective To investigate the change of Debris index(DI), Plaque index(PI) and Sulcus bleeding index(SBI) after Ash propel polish.是什么意思_Objective To investigate the change of Debris index(DI), Plaque index(PI) and Sulcus bleeding index(SBI) after Ash propel polish.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句