RDA Dental Charting, Tooth Morphology, and Occlusion 5

Question 1

Which permanent tooth has only a single root and a single canal AND is the longest tooth in the mouth?

Accepted Answer

Maxillary canine

Answer

The maxillary canine has one root that is the longest of any tooth in the permanent dentition, providing strong anchorage.

Question 2

In the Palmer Notation Method, the symbol ┘ represents which quadrant?

Accepted Answer

Maxillary right

Answer

In Palmer notation, ┘ (bracket opening to the lower left) represents the maxillary right quadrant.

Question 3

The term 'trifurcation' is most applicable to which tooth?

Accepted Answer

Maxillary first molar

Answer

The maxillary first molar has three roots (mesiobuccal, distobuccal, and palatal), making trifurcation the correct term for their division.

Question 4

Which landmark on the maxillary central incisor is used to distinguish it from the lateral incisor?

Accepted Answer

Wider crown mesiodistally with a flatter incisal edge

Answer

The maxillary central incisor has a notably wider mesiodistal crown width and a flatter, straighter incisal edge compared to the more rounded lateral incisor.

Question 5

An edge-to-edge bite is a characteristic of which Angle classification?

Accepted Answer

Class I

Answer

An edge-to-edge bite can occur within a Class I skeletal relationship where the incisal edges of upper and lower incisors meet directly.

(RDA) Registered Dental Assistant Practice Test

(RDA) Registered Dental Assistant Practice Test

RDA Dental Charting, Tooth Morphology, and Occlusion 5