Exam 10: Tooth Identification

The distal incisal edges of anterior teeth are more rounded than the mesial incisal edges.

Third molars are generally larger than first molars because a general rule of tooth identification states that permanent molars are generally taller in height and have more cusps the more posteriorly they are placed.

Roots of third molars are most often dilacerated because the more posterior the molars are positioned, the more variation of anatomy is evident.

The mandibular second molar has

Maxillary molars have three roots, a facial and two lingual. Mandibular molars have two roots, a facial and a lingual.

Which incisor exhibits a slight distolingual rotation?

The cusp of Carabelli is located on the _____ molar.

Secondary anatomy refers to anatomical features of second molars and premolars. Tertiary anatomy refers to unique anatomical features of third molars.

Which are the smallest teeth?

Which molar has two buccal grooves?

Which of the following accurately describe mandibular molars (select all that apply)?

The crowns of the maxillary incisors are wider mesiodistally than labiolingually. The roots of maxillary incisors are oval in cross section.

On anterior teeth, the curvature of the CEJ is the same on mesial and distal surfaces.

Which premolar most frequently has three cusps?

Root bifurcations may be present on maxillary premolars but not on mandibular premolars because maxillary premolars have two roots whereas mandibular premolars have only one root.

Which molars have five (major and minor) cusps?

Canines have a single cusp.

The lingual cusp of the maxillary first premolar is longer than the facial cusp. This tooth often has two roots, one mesial and one distal.

Tooth roots do not always curve. If roots do curve, they typically curve distally.