DMD Dental Procedures & Techniques 2

Question 1

What is the typical outline form of the endodontic access cavity for a maxillary first molar?

Accepted Answer

Rhomboidal (triangular), with the base toward the buccal

Answer

The maxillary molar access is rhomboidal/triangular to reach the MB, DB, and palatal orifices, including the MB2.

Question 2

Where is the working length usually set during conventional root canal instrumentation?

Accepted Answer

Approximately 0.5–1 mm short of the radiographic apex

Answer

Ending 0.5–1 mm short of the radiographic apex approximates the apical constriction (minor diameter).

Question 3

During irrigation, sodium hypochlorite is extruded past the apex and the patient has sudden severe pain and swelling. What is the best immediate management?

Accepted Answer

Stop, reassure the patient, apply cold compresses, and give analgesics, with antibiotics if infection develops

Answer

Hypochlorite accidents are managed supportively: cold compresses first, then analgesics, monitoring, and antibiotics or referral when needed.

Question 4

Which material is most commonly used as an intracanal medicament between endodontic appointments?

Accepted Answer

Calcium hydroxide paste

Answer

Calcium hydroxide's high pH makes it antibacterial and lets it dissolve tissue, which is why it is the standard interappointment medicament.

Question 5

What is the recommended minimum occlusal thickness for an amalgam restoration so it resists fracture?

Accepted Answer

1.5–2.0 mm

Answer

Amalgam is brittle and needs about 1.5–2.0 mm of bulk to withstand occlusal forces.

DMD - Doctor of Medicine in Dentistry Practice Test

DMD - Doctor of Medicine in Dentistry Practice Test

DMD Dental Procedures & Techniques 2