Unique Characteristics: ALL TEETH

Question 1

Maxillary Central Incisor (4)

Answer 1

1.) Greatest Mesiodistal dimension of any anterior tooth.
2.) Mesiodistal / incisocervical dimension = closer to each other than any other incisor
3.) Incisal curvature of cervical line = most convex on mesial side of max. cen. incisor. Convexity towards incisal edge.
4.) Long axis bisector passes through incisal edge. This trait shared with lateral central incisors.

Question 2

Maxillary Lateral Incisor (7)

Answer 2

1.) Smallest mesiodistal / faciolingual dimension of any MAXILLARY tooth.
2.) Most crown form variations of any tooth except 3rd molars. Subject to most # of anomalies.
3.) Incisal view: least dimensional difference of any anterior tooth.
4.) Most incisal curvature of all INCISORS.
5.) Distal proximal contact: Middle (halfway)
6.) Distal contact centered incisocervically & faciolingually. (Basically, the contact point is in middle of tooth).
7.) Long axis bisector through incisal edge. (Shared with maxillary cen. incisor).

Question 3

Mandibular Central Incisor (8)

Answer 3

1.) Smallest crown dimension of any tooth. (mesiodistal, incisocervical, faciolingual)
2.) Only tooth that is bilaterally symmetrical.
3.) Sharpest proximoincisal angles (both mesial/distal). Matched in sharpness by mesioincisal angle of mand. lat. incisor.
4.) Proximal contacts at same level.
5.) Least number of developmental lines / grooves.
6.) Lingual surface contours: Lingual surface = smoothest, same with mand. lat. incisor.
7.) Least developed cingulum.
8.) Proximal view: Incisal edge of mandibular central incisors = lingual to incisal edge.

Question 4

Mandibular Lateral Incisors (5)

Answer 4

1.) Crown = twisted on root. More towards lingual on distal surface.
2.) Least number of facial developmental lines / grooves. Same as mand. cen. incisors.
3.) Lingual surface of mand. lat. incisor = smooothest, shared with mand. cen. incisors.
4.) Mand. cen. / lat. incisors = least developed cingula.
5.) Incisal edge = little bit lingual to bisecting line.

Question 5

Maxillary Canines (9)

Answer 5

1.) Longest length (incisal to root). both max and mand share this.
2.) Largest faciolingual crown dimension
3.) Distal bulge (pinched faciolingually from incisal view)
4.) Cusp tip = facial to bisecting line.
5.) Largest / most prominent cingulum.
6.) Has cervical bulk. Most bulbous looking anter. tooth from proximal view.
7.) Most Prominent facial ridge/middle lobe compared to any anter. tooth.
8.) Distal proximal contact = centered.
9.) Longest root length of any tooth.

Question 6

Mandibular Canines (6)

Answer 6

1.) Mand and max have longest root length.
2.) Longest incisocervical crown dimension of any tooth.
3.) Mesial crown/root alignment is a straight line.
4.) C shaped facial crown/root curvature.
5.) Incisal edge is lingual to bisecting line.
6.) Root length = longest in mandibular arch. (shorter than maxillary canine).