DDS Practice 4

Question 1

A dentist is treating a patient who is 4 months pregnant. Which radiographs are safe to take if clinically indicated?

Accepted Answer

Radiographs are safe with proper shielding when diagnostically necessary

Answer

Dental radiographs are safe during pregnancy when clinically necessary, provided a thyroid collar and lead apron are used to minimize fetal exposure.

Question 2

What is the primary purpose of the gingival fiber group called the transseptal fibers?

Accepted Answer

Connect adjacent teeth through the interproximal space

Answer

Transseptal fibers extend interproximally between adjacent teeth, connecting them through the interdental space above the alveolar bone.

Question 3

During composite resin placement, the dentist uses an incremental layering technique. The primary reason for this technique is to:

Accepted Answer

Reduce polymerization shrinkage stress

Answer

Incremental layering reduces the overall polymerization shrinkage stress by limiting the volume of composite cured at one time and allowing stress relief.

Question 4

A patient presents with multiple amalgam restorations and complains of a metallic taste and burning sensation. The adjacent mucosa shows a white, striated lesion that cannot be wiped off. This is most likely:

Accepted Answer

Oral lichenoid reaction

Answer

Oral lichenoid reactions in contact with amalgam restorations present as white striated lesions that do not rub off, similar to lichen planus.

Question 5

Which drug classification requires the use of prophylactic antibiotics before invasive dental procedures according to the American Heart Association guidelines?

Accepted Answer

Patients with prosthetic heart valves

Answer

The AHA recommends antibiotic prophylaxis before dental procedures for patients with prosthetic heart valves due to high risk of adverse outcomes from infective endocarditis.

DDS - Doctor of Dental Surgery Practice Test

DDS - Doctor of Dental Surgery Practice Test

DDS Practice 4