Given that a chronically dry mouth raises risk of cavities and gum disease, you may want to check your medicine cabinet.
知道了长久干燥的口腔会更容易蛀齿和发生牙龈炎,你也许会想要检查一下你的药箱。
3
Phase I trials: These first studies in people evaluate how a new drug should be given (by mouth, injected into the blood, or injected into the muscle), how often, and what dose is safe.