Dental Anatomy Permanent Incisors

Question 1

what is the primary function of incisors?

Answer 1

biting

Question 2

which permanent tooth has the greatest FL axial inclination?

Answer 2

maxillary central incisors

Question 3

which permanent tooth has the greatest cervical curvature of any other tooth?

Answer 3

• maxillary central

- curvature is on the mesial

Question 4

what are the 3 rules associated with cervical curvatures?

Answer 4

dips deeper on…

• anterior teeth than posterior teeth
• maxillary than mandibular
• mesial than distal

Question 5

which teeth are the only anterior teeth that are wider MD than FL?

Answer 5

maxillary central incisors

Question 6

which tooth has the greatest MD crown dimension of any other anterior tooth?

Answer 6

maxillary central incisors

Question 7

which two measurements of maxillary central incisors are nearly identical?

Answer 7

incisocervical and mesiodistal

Question 8

the contact between a maxillary central and a lateral incisor makes the lingual embrasure (smaller/larger) than the facial

Answer 8

larger

Question 9

the incisal embrasure between the maxillary centrals is (smaller/larger) than between the central and lateral

Answer 9

smaller

Question 10

which permanent tooth has the most variation in crown shape?

Answer 10

maxillary lateral incisors

Question 11

the ___ exhibits the most deviation in crown morphology, followed by the ___

Answer 11

• 3rd molars

- maxillary lateral incisor

Question 12

which tooth is most often in abnormal relation and contact with adjacent teeth?

Answer 12

maxillary lateral incisor

Question 13

the ___ is most often congenitally missing, followed by ___

Answer 13

• 3rd molars

- maxillary lateral incisors

Question 14

the non-molar tooth that most frequently has a M and D pulp horn is the ___

Answer 14

maxillary central incisor

Question 15

the non-molar tooth that is least likely to have a bifurcated root is the ___

Answer 15

maxillary central incisor

Question 16

the anterior tooth that most likely would demonstrate lingual pit caries is the ___

Answer 16

maxillary lateral incisor

Question 17

what anatomical feature of maxillary lateral incisors complicates root planing?

Answer 17

DL groove

Question 18

the distoincisal angle of which teeth has the greatest convexity of all maxillary anterior teeth?

Answer 18

maxillary lateral incisor

Question 19

which teeth generally have the most prominent marginal ridges of all anterior teeth?

Answer 19

maxillary lateral incisors

Question 20

which teeth have the most distinct and deepest lingual fossas of all anterior teeth?

Answer 20

maxillary lateral incisors

Question 21

which tooth has the smallest MD crown width of any maxillary tooth?

Answer 21

maxillary lateral incisor

Question 22

which maxillary tooth has a MD measurement that is nearly identical to its FL measurement?

Answer 22

maxillary lateral incisor

Question 23

the MD width of the maxillary lateral incisor is (wider/narrower) than the maxillary central incisor

Answer 23

narrower

Question 24

which incisor has a distal contact that is the farthest cervical of any incisor?

Answer 24

maxillary lateral

Question 25

the maxillary lateral distal contact is located where?

Answer 25

centered both inciso-cervically and facio-lingually

Question 26

the maxillary lateral incisor is usually equal to or larger than the ___ in root length

Answer 26

maxillary central incisor

Question 27

how are mandibular central incisors distinguished from each other?

Answer 27

their cervical curvature, which is greater on the M than the D

Question 28

mandibular central and laterals most frequently have concave areas on which root surface?

Answer 28

M and D

Question 29

which tooth has the smallest crown dimensions of any tooth?

Answer 29

mandibular central incisors

Question 30

which tooth has the most symmetrical crown?

Answer 30

mandibular central incisor

Question 31

which tooth has the sharpest set of incisal angles (M and D)?

Answer 31

mandibular central incisors

Question 32

the proximal contacts of the mandibular central incisors are ___

Answer 32

at the same level (incisal)

Question 33

which permanent teeth generally only occlude with only one opposing tooth?

Answer 33

mandibular central incisors and maxillary 3rd molars

Question 34

___ is the first succedaneous tooth to erupt in the mouth

Answer 34

- permanent mandibular central incisor | - remember, the permanent 1st molar is not succedaneous

Question 35

___ and ___ embrasures of mandibular central incisors may be the same size

Answer 35

B and L

Question 36

the crown of the mandibular lateral incisor tilts _(mesially/distally)_ in relation to the long axis

Answer 36

distally

Question 37

the MD width of the mandibular lateral incisor is _(narrower/wider)_ than the mandibular central incisor

Answer 37

wider