Radiographs may assist in determining the distribution of periodontitis

Advantages of the dry powder inhaler (DPI) drug delivery systems include which of the follow-ing?

1. Low relative cost 2. No propellants required 3. No hand-breath coordination necessary 4. Unaffected by humidity a. 1 and 3 only b. 1, 2, and 3 only c. 3 and 4 only d. 2, 3, and 4 only

A Medicare benefit period begins when the patient is ____________________ to a hospital or skilled nursing facility and ends ____________________ days after discharge.

Fill in the blank(s) with the appropriate word(s).