Explanation should include

• inhalation
• intramuscular
• intravenous
• oral
• parenteral
• rectal
• subcutaneous
• sublingual
• topical.

Process/Skill Questions:

• What is the most common drug administration route used in dentistry?
• What should one do in the case of a patient who is to receive nitrous but cannot breathe from his or her nose at the time due to allergies or a cold?
• What specialties in dentistry require the use of intravenous drug administration?