Applied Pharmacology for the Dental Hygienist
ELENA BABLENIS HAVELES
9th Edition
,Chapter 01: Information Sources, Regulatory Agencies, Drug Legislation, and
Prescription Writing
Haveles: Applied Pharmacology for the Dental Hygienist, 9th Edition
MULTIPLE CHOICE
1. Knowledge of pharmacology aids the dental professional in
a. obtaining a patient’s health history.
b. administering drugs in the office.
c. handling emergency situations.
d. selection of a nonprescription medication.
e. All of the above.
ANSWER: E
All of the choices are true. Because many of our patients are being treated with drugs, knowledge of
pharmacology helps in understanding and interpreting patients’ responses to health history questions.
Knowledge of the therapeutic and adverse effects of medications obviously helps in their proper
administration in the office. Emergency situations may be caused by drugs or treated by drugs; thus,
knowledge of pharmacology is of great help, especially because a rapid response is sometimes required. A
clear understanding of the concepts of drug action, drug handling by the body, and drug interactions will
allow the dental practitioner to make proper judgments and grasp the concepts relevant to new drug
therapies on the market.
DIF: Application
REF: Role of the Dental Hygienist (Medication/Health History), Role of the Dental Hygienist (Medication
Administration), Role of the Dental Hygienist (Emergency Situations), Role of the Dental Hygienist (Nonprescription
Medication) | pp. 2-3 OBJ: 1
TOP: NBDHE, 6.0. Pharmacology
2. Which of the following statements is true regarding planning appointments?
a. Whether or not patients are taking medication for systemic diseases is of little
consequence in the dental office.
b. Asthmatic patients should have dental appointments in the morning.
c. Diabetic patients usually have fewer problems with a morning appointment
compared with afternoon appointments.
d. Both B and C are true.
ANSWER: D
Asthmatic patients who experience dental anxiety should schedule their appointments when they are not
rushed or under pressure early in the morning. Diabetic patients usually have relatively fewer problems with
a morning appointment. Patients taking medication for systemic diseases may require special handling in the
dental office.
DIF: Comprehension
REF: Role of the Dental Hygienist (Appointment Scheduling) | p. 3 OBJ: 1
TOP: NBDHE, 6.0. Pharmacology
,3. Nutritional or herbal supplements
a. carry the U.S. Food and Drug Administration (FDA) approval for disease states.
b. are not drugs.
c. can cause adverse effects.
d. will not interact with other drugs the patient may be taking.
ANSWER: C
Nutritional or herbal supplements are quite capable of causing adverse effects. The majority of
nutritional or herbal supplements do not carry FDA approval for treating disease states. These
supplements are drugs and can cause adverse effects and interact with different drugs.
DIF: Comprehension
REF: Role of the Dental Hygienist (Nutritional or Herbal Supplements) | p. 3 OBJ: 1
TOP: NBDHE, 6.0. Pharmacology
4. Which type of drug name usually begins with a lowercase letter?
a. Brand name
b. Code name
c. Generic name
d. Trade name
ANSWER: C
Before any drug is marketed, it is given a generic name that becomes the “official” name of the drug. Each
drug is assigned only one generic name selected by the U.S. Adopted Name Council, and the name is not
capitalized. The brand name is equivalent to the trade name and is capitalized. Although the brand name is
technically the name of the company marketing the product, this term is often used interchangeably with
the trade name. The code name is the initial term used within a pharmaceutical company to refer to a drug
while it is undergoing investigation and is often a combination of capital letters and numbers, the letters
representing an abbreviation of the company name.
DIF: Comprehension REF: Drug Names | p. 4 OBJ: 3 TOP: NBDHE,
6.0. Pharmacology
5. A drug’s generic name is selected by the
a. pharmaceutical company manufacturing it.
b. Food and Drug Administration (FDA).
c. U.S. Adopted Name Council.
d. Federal Patent Office.
ANSWER: C
Each drug is assigned only one generic name (e.g., ibuprofen). It is selected by the U.S. Adopted Name
Council. The generic name is not selected by the FDA or the Federal Patent Office. The pharmaceutical
company manufacturing the drug clearly has an influence on the generic name given its drug, but the final
decision is not the company’s.
DIF: Recall REF: Drug Names | p. 4 OBJ: 3
TOP: NBDHE, 6.0. Pharmacology
6. Which of the following is true concerning generic and trade names of drugs?
a. A drug may only have one generic name and one trade name.
, b. A drug may only have one generic name, but it may have several trade names.
c. A drug may have several generic names, but it may only have one trade name.
d. A drug may have several generic names and several trade names.
ANSWER: B
Each drug has only one generic name but may have several trade names. For each drug, there is only one
generic name. It is not capitalized, and it becomes the “official” name of the drug. The pharmaceutical
company discovering the drug gives the drug a trade name. The trade name is protected by the Federal
Patent Law for 20 years from the earliest claimed filing date, plus patent term extensions. Although the
brand name is technically the name of the company marketing the product, it is often used interchangeably
with the trade name.
DIF: Comprehension REF: Drug Names | p. 4 OBJ: 3 TOP: NBDHE,
6.0. Pharmacology
7. Two drugs that are found to be chemically equivalent, but not biologically equivalent or
therapeutically equivalent are said to differ in
a. potency.
b. efficacy.
c. bioavailability.
d. therapeutic index.
ANSWER: C
A preparation can be chemically equivalent yet not biologically or therapeutically equivalent. These
products are said to differ in their bioavailability. The potency of a drug is a function of the amount of drug
required to produce an effect. The efficacy is the maximum intensity of effect or response that can be
produced by a drug. The therapeutic index is the ratio of the lethal dose for 50% of the experimental
animals divided by the effective dose for 50% of the experimental animals. If the value of the therapeutic
index is small, toxicity is more likely.
DIF: Recall REF: Drug Names (Drug Substitution) | p. 5 OBJ:
4 TOP: NBDHE, 6.0. Pharmacology
8. How many years must pass after a drug patent expires before other drug companies can market the same
compound as a generic drug?
a. 20 years
b. 17 years
c. 7 years
d. 0 years
ANSWER: D
Once a drug patent expires, competing companies may immediately market the same compound in
generic form. The pharmaceutical company discovering the drug gives the drug a trade name. The trade
name is protected by the Federal Patent Law for 20 years from the earliest claimed filing date, plus the
patent term extensions.
DIF: Application REF: Drug Names (Drug Substitution) | p. 5 OBJ:
4 TOP: NBDHE, 6.0. Pharmacology