mandibular incisors

Question 1

what is the point of contact called where two adjacent teeth contact one another?

Answer 1

interproximal contact

Question 2

what are the spaces that widen out from the contact called?

Answer 2

embrasures

Question 3

how many embrasures do anterior and posterior teeth have?

Answer 3

• anterior = 4
  
  • incisal, gingival, facial, lingual
    NOTE - incisal < gingival and facial = lingual
• posterior = 4
  
  • occlusal, gingival, facial, lingual
    NOTE - occlusal = gingival and facial < lingual

Question 4

what are mandibular incisors used to do?

Answer 4

incise or cut food

Question 5

what is the smallest tooth in the oral cavity?

Answer 5

mandibular central incisor

Question 6

what teeth have the smallest mesiodistal diameters of any tooth in the mouth?

Answer 6

mandibular incisors

Question 7

GENERAL CHARACTERISTICS OF MANDIBULAR INCISORS

Answer 7

broader buccolingually (BL) than mesiodistally (MD)

Question 8

the crown of a mandibular central incisor is approximately ____ as long (IG) as wide (MD)

Answer 8

2x

Question 9

mesioincisal and distoincisal line angles of mandibular central incisors are _____

Answer 9

sharp 90 degree angles (both)

Question 10

what tooth is often described as the only symmetrical tooth in the mouth?

Answer 10

mandibular central incisor

Question 11

where are the contacts located for a mandibular central incisor?

Answer 11

both mesial and distal contacts are at the same level in the incisal 1/3

Question 12

how many roots does a mandibular central incisor have?

Answer 12

one root (root is longer than the crown legnth)

Question 13

the mesial and distal marginal ridges are only ______ on mandibular central incisors

Answer 13

minor elevations

Question 14

where is the height of contour located on a mandibular central incisor?

Answer 14

cervical 1/3

Question 15

where does the incisal edge lay when bisecting the root of a mandibular central incisor?

Answer 15

lies lingual to line bisecting root

Question 16

when worn, the incisal edge angles to the ____ for a mandibular central incisor

Answer 16

facial

Question 17

the CEJ curves incisally about 1mm more than one the _______ for a mandibular central incisor

Answer 17

distal

Question 18

the developmental depression for a mandibular central incisor is greater on the ________ than on the ________

Answer 18

• distal of root
• mesial

Question 19

the root of a mandibular central incisor is borader _______ than _______

Answer 19

• faciolingually
• mesiodistally

Question 20

what is the relationship regarding size for mandibular central incisor and lateral incisors?

Answer 20

lateral incisors are larger than centrals (wider MD)

Question 21

all extra width appears to be added to the ______ aspect of a mandibular lateral incisor

Answer 21

distal

Question 22

in a mandibular lateral incisor, the distal crown height is often _______ than the mesial crown height

Answer 22

shorter

Question 23

the incisal edge of a mandibular lateral incisor slopes _____ distally

Answer 23

downward

Question 24

the mesioincisal angle for a mandibular lateral incisor is _____

Answer 24

sharp 90 degree angle

Question 25

the distoincisal angle for a mandibular lateral incisor is more ______ than the mesioincisal

Answer 25

rounded

Question 26

where are the mesial and distal contacts for a mandibular lateral incisor?

Answer 26

in the incisal 1/3
NOTE - distal contact is more cervical than mesial

Question 27

the developmental depressions on the root of the mandibular lateral incisor are __________ than on the mandibular central incisor

Answer 27

more pronounced

Question 28

the ______ aspect of a mandibular lateral incisor is twisted lingually (the lingual surface is not visible when viewed from the distal)

Answer 28

distal

Question 29

the incisal edge of a mandibular lateral incisor is ______ to the center of the tooth

Answer 29

lateral

Question 30

the distal part of the crown of a mandibular lateral incisor appears to be curved _______

Answer 30

lingually