Dentistry: Drug Dosage Forms and Selection

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What is the primary advantage of enteric-coated tablets?

To enable the medication to be administered through injection
To allow medication to dissolve at a faster rate
To protect drugs from gastric acid and prevent gastric irritation (correct)
To provide immediate release and short action

What type of tablets are designed to dissolve at a slower rate?

Capsules
Sustained release tablets (correct)
Suppositories
Enteric-coated tablets

What is the primary function of a suppository?

To deliver medication through injection
To deliver medication by insertion into a body orifice (correct)
To deliver medication through topical application
To deliver medication through oral administration

What is the purpose of a preservative in a gelatin shell of a capsule?

To prevent fungal growth (C) Signup and view all the answers

Why should suppositories be kept in a refrigerator?

To keep them from spoilage (B) Signup and view all the answers

What is the characteristic of a gelatin shell of a capsule?

It is water-free (A) Signup and view all the answers

What is the characteristic of an ophthalmic solution?

It is a sterile and isotonic solution (B) Signup and view all the answers

What is the purpose of shaking a suspension before use?

To ensure uniform distribution of the drug (C) Signup and view all the answers

What type of dosage form is a concentrated aqueous solution of sugar?

Syrup (B) Signup and view all the answers

What is the typical solvent used in a tincture?

Ethanol (B) Signup and view all the answers

What is the characteristic of an ampoule?

It contains a single dose of a drug (C) Signup and view all the answers

What is the main advantage of inhalational dosage forms compared to other administration routes?

Rapid delivery of the drug across the large surface area of the alveolar membrane (A) Signup and view all the answers

What is the purpose of an emulsifying agent in an emulsion?

To stabilize the emulsion (B) Signup and view all the answers

What is the primary disadvantage of inhalational dosage forms?

Irritation of the pulmonary epithelium (C) Signup and view all the answers

What is the purpose of ointments in topical dosage forms?

To provide an emollient effect (C) Signup and view all the answers

What is the primary advantage of mucosal administration of drugs?

Localized delivery of the drug with minimal systemic effects (B) Signup and view all the answers

What is the main difference between suppositories and pessaries?

Route of administration (A) Signup and view all the answers

What is the primary disadvantage of using inhalers?

Difficulty in using the inhaler properly (A) Signup and view all the answers

What percentage of water is typically present in a cream?

20-50% (B) Signup and view all the answers

Why are creams better suited for oozing or 'wet' skin conditions?

Because they are semisolid emulsions and absorb quickly (A) Signup and view all the answers

What is the main difference between ointments and creams in terms of oil and water content?

Ointments have more oil and less water, while creams have more water and less oil (C) Signup and view all the answers

What is the characteristic of ophthalmic ointments?

They are sterile and applied to the eye (A) Signup and view all the answers

How should lotions and liniments be used?

They should be shaken well before each use (B) Signup and view all the answers

What is the purpose of liniments?

To reduce pain or relieve stiffness (C) Signup and view all the answers

What is the primary difference between lotion and liniment?

Their viscosity and consistency (A) Signup and view all the answers

What type of tablet is designed to release the active ingredient slowly over a period of time?

Sustained released tablet (A) Signup and view all the answers

Which of the following dosage forms typically require shaking before use?

Gels and suspensions (D) Signup and view all the answers

What is the primary function of an enteric coated tablet?

To release the active ingredient in the intestine (D) Signup and view all the answers

Which of the following is NOT a characteristic of a lotion?

It is an oral dosage form (A) Signup and view all the answers

What is the primary difference between a lotion and a cream?

Their viscosity and consistency (B) Signup and view all the answers