✨✨chapter 2 morphology of permanent incisors

_____ are rounded incisal extensions of the labial lobes found on newly erupted or unworn permanent incisor teeth

Mamelons

Which incisors commonly present with decay in the lingual pits?

Maxillary laterals

Which statement is true regarding all lateral incisors (maxillary and mandibular)?

When viewed from the facial, mesioincisal angles are more square than distoincisal angles.

Which (if any) of the following incisors has its mesial proximal contact area (crest of curvature) at the same level incisocervically as its distal contact due to its symmetry?

Mandibular central incisor

Though smaller than the maxillary incisors, mandibular incisors also have _____ (number of) lobes.

Four

Which incisor is considered the most symmetrical?

Mandibular central incisor

Which statement is true regarding ALL incisor crowns?

When viewed from the proximal (mesial or distal), lingual outlines are S-shaped.

All but one type of incisor have a mesioincisal angle more square (more acute) than the distal angle. Which type is the EXCEPTION?

Mandibular central incisor

The distal contact area of the permanent maxillary central incisor is located in the:

Junction of the incisal and middle thirds

Compared to the maxillary incisor, the mandibular incisors have more prominent marginal ridges.

False

The marginal ridges and cingulum of the permanent maxillary central incisor are _______ than those of the permanent mandibular incisor.

More prominent

Which incisors are most nearly identical in shape?

Mandibular central and lateral incisors

Which statement(s) is/are true regarding the wear pattern of the incisal edges of anterior teeth (assuming ideal occlusion)?

Mandibular incisors are likely to exhibit wear on the facial part of the incisal edge.

The distal contact area of the permanent maxillary lateral incisor is located in the:

Center of the middle third

How many permanent incisors are present in the typical permanent adult dentition?

Eight

Which tooth is represented by the Federation Dentaire Number 41?

Mandibular right central incisor

Which tooth has the shortest root relative to its crown?

Maxillary central incisor