dental hygiene造句

• Encourage chewing and ensure proper dental hygiene . avoid cigarette smoking
  鼓励咀嚼，保持口腔?生及避免吸烟，以增加对食物的味道感应。
• It is caused by poor dental hygiene . a layer of plaque accumulates along the gum margin
  牙周病的形成，一般是由于牙不清洁，导致牙垢膜积聚在牙表面。
• It is caused by poor dental hygiene . a layer of plaque accumulates along the gum margin
  牙周病的形成，一般是由于牙齿不清洁，导致牙垢膜积聚在牙齿表面。
• A new study suggests that gum disease may result from reduced levels of a key enzyme in cells in addition to indifferent dental hygiene
  一项新的研究提示，牙龈疾病除了口腔卫生不良以外，还可能由于细胞内一种重要酶的水平降低而发生。