EFDA Anatomy and Occlusion 5

Question 1

The root trunk of a multi-rooted tooth refers to the area:

Accepted Answer

Between the CEJ and the furcation

Answer

The root trunk is the undivided portion of the root between the cementoenamel junction and the furcation where the roots diverge.

Question 2

Which of the following teeth is MOST likely to have three roots?

Accepted Answer

Maxillary first molar

Answer

The maxillary first molar classically has three roots: mesiobuccal, distobuccal, and palatal (lingual).

Question 3

Curve of Spee refers to the:

Accepted Answer

Anteroposterior curvature of the occlusal plane from canine to last molar

Answer

The curve of Spee is the anteroposterior (sagittal) curvature of the mandibular occlusal plane, curving upward from the canine back through the molars.

Question 4

A patient has an overbite of 6 mm. This is best described as:

Accepted Answer

Increased vertical overlap of anterior teeth

Answer

Overbite is the vertical overlap of the maxillary incisors over the mandibular incisors; 6 mm exceeds the normal range of 1–3 mm and is considered a deep bite.

Question 5

The lateral pterygoid muscle is PRIMARILY responsible for which mandibular movement?

Accepted Answer

Lateral movement and protrusion

Answer

The lateral pterygoid protrudes the mandible and, acting unilaterally, produces lateral (sideways) movement; it also assists in depression.

(EFDA) Expanded Function Dental Auxiliary Practice Test

(EFDA) Expanded Function Dental Auxiliary Practice Test

EFDA Anatomy and Occlusion 5