Tooth Characteristics

Question 1

List common features for ALL Incisors

Answer 1

• Sharp mesio-incisal angle
• Rounded disto-incisal angle
• Mammelons on eruption

Question 2

List 4 features of Maxillary Central Incisors

Answer 2

• Largest incisor
• Widest anterior tooth
• Straighter incisal edge
• Root straighter but distally inclinded

Question 3

List 4 features of Mandibular Central Incisors

Answer 3

• Symmetrical
• Smaller cingulum
• Smallest permanent tooth
• Root straight with only slight curvature to the distal

Question 4

List 4 features of Maxillary Lateral Incisors

Answer 4

• Smaller than central
• Incisal edge sloped towards distal
• Root apex more distally inclined
• More likely to have developmental pits on palatal

Question 5

List 4 features of Mandibular Lateral Incisors

Answer 5

• Fan shaped Mesio-distal
• Incisal edge distally sloped
• Crown appears twisted on the root
• Slightly larger than Mandibular 1st Incisor

Question 6

List 4 features of Maxillary Canines

Answer 6

• Diamond shaped crown
• Pentagonal crown outline
• Longest tooth from apex to cusp tip
• Distal-incisal ridge longer than Mesio-incisal ridge

Question 7

List 4 features of Mandibular Canines

Answer 7

• Distal sweep to root
• Crown appears narrow and tall
• Distal-incisal ridge longer than Mesio-incisal ridge
• Lingual fossa less pronounced than Maxillary Canine

Question 8

List general features for Maxillary Premolars

Answer 8

• Crown looks squished
• Buccal wider than Palatal
• 2 pits (Mesial occlusal and Distal Occlusal)
• Occlusal different to tell apart by looking at crown only

Question 9

List 5 features of Maxillary 1st Premolars

Answer 9

• Line angles sharper
• Mesial marginal ridge fissure/groove
• Buccal cusp higher than palatal cusp
• Roots fused and partially bifurcated
• Mesial margin concave: appears heart shaped (To fit Canine)

Question 10

List 5 features of Maxillary 2nd Premolars

Answer 10

• Single rooted
• Line angles more rounded
• No marginal ridge fissure/groove
• Mesial and distal margins straighter
• Buccal and palatal cusps closer in height

Question 11

List general features for Mandibular Premolars

Answer 11

• Single rooted
• Occlusal surface lingually inclined
• Buccal surface visible from occlusal aspect
• Lower premolars appear more rounded than uppers (Appears squished in the middle)

Question 12

List 4 features of Mandibular 1st Premolars

Answer 12

• Mesial lingual fissure
• 2 pits: Mesial pit smaller
• Transverse ridge on steep angle
• Short, non functioning lingual cusp (Can look like Cingulum)

Question 13

List 3 features of Mandibular 2nd Premolars

Answer 13

• Lingual cusp/s well developed
• Can have Y, U or H shaped fissure pattern
• Can have 2 or 3 cusps (1 buccal and 1 or 2 lingual)