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Nitrous oxide combined with oxygen (N2O/O2) has become a primary part of dental office _____ procedures.

Oral-cavity infections are generally understood to advance through three stages. The three stages are (1) mixed aerobic and anaerobic infection, (2) aerobic infection, and (3) anaerobic infection. In what order do these stages occur?

Which of the following dental local anesthetics is associated with an increased incidence of paresthesia following an inferior alveolar (IA) block?

Which of the following classes of antibodies is triggered when an allergen is inhaled in an individual with a sensitized immune system?

Nitrous oxide cylinders are _____ and oxygen cylinders are _____: (1) red, (2) green, (3) blue, (4) orange, and (5) tan.

Which of the following agents is the most common topical local anesthetic?

Which of the following agents is the drug of choice for an early dental infection unless the patient is allergic to it?

Simple goiter is prevalent in some areas of the world because iodine is abundant in most foods.

_____ has the highest incidence of gastrointestinal complaints of any of the antibiotics.

Which of the following is the most common adverse reaction to administration of metronidazole?