dental nomenclature (OB3)

Question 1

permanent dentition

Answer 1

• > adult dentition:
• 32 teeth
• 16 jaw per jaw
• 8 teeth per quadrant
• > 2 incisors, 1 canine, 2 premolars, 3 molars

Question 2

deciduous dentition

Answer 2

• > baby dentition:
• 20 teeth
• 10 per jaw
• 5 per quadrant
• > 2 incisors, 1 canine, 2 molars

Question 3

successional teeth

Answer 3

• have a deciduous predecessor

- >permanent incisors, canines and premolars

Question 4

accessional teeth

Answer 4

• erupt behind deciduous teeth/ have no deciduous predecessor
• > permanent molars

Question 5

dental formulae for permanent dentition

Answer 5

I2/2, C1/1, P2/2, M3/3 = 16

Question 6

dental formulae for deciduous dentition

Answer 6

DI 2/2, DC 1/1, DM 2/2 = 10

Question 7

dental formulae for sheep

Answer 7

I 0/4, C 0/0, P 3/3, M 3/3 = 16

Question 8

dental formulae for horses

Answer 8

I 3/3 , C 1/1, P 3/3, M 3/3 = 20

Question 9

tooth notation

Answer 9

-teeth are numbered 1-8 in quadrants going medial - lateral

Question 10

tooth notation: palmer system/zsigmondy-palmer/chevron/set square

Answer 10

• for permanent dentition: teeth are numbered 1-8 in quadrants going medial - lateral
• for deciduous dentition teeth are labelled A-E in each quadrant going medial - lateral

Question 11

tooth notation: palmer system ‘modified’

Answer 11

-quadrants are labeled the same as normal palmer system however labelled UR (upper right), UL (upper left), LR (lower right) and LL (lower left), therefore no longer put in box , eg. = UL1, LLC etc

Question 12

FDI 2 digit system

Answer 12

• number is used to define each quadrant
• > 1 = permanent upper right quadrant
• > 2 = permanent upper left quadrant
• > 3 = permanent lower left quadrant
• > 4 = permanent lower right quadrant
• > 5 = deciduous upper right quadrant
• > 6 = deciduous upper left quadrant
• > 7 = deciduous lower left quadrant
• > 8 = deciduous lower right quadrant
• > teeth are numbered 1-8 in quadrants going medial - lateral for permanent dentition and 1-5 medial - lateral for deciduous dentition
• > eg.’s = tooth 21, tooth 72 etc

Question 13

american/universal notation

Answer 13

• permanent dentition:
• > upper teeth are numbered 1-16 (from upper right laterals to upper left laterals)
• > lower teeth are numbered 17-32 (from lower left laterals to lower right laterals)
• deciduous dentition:
• > upper teeth are labelled A-J (from upper right laterals to upper left laterals)
• > lower teeth are labelled K-T (from lower left laterals to lower right laterals)

Question 14

european notation

Answer 14

• > teeth are numbered 1-8 in quadrants going medial - lateral for permanent dentition and 01-05 medial - lateral for deciduous dentition
• > upper teeth have a + sign (on the medial side to number!!!!)
• > lower teeth have a - sign (on the medial side to number!!!)

Question 15

tooth surfaces

Answer 15

• distal (furthest from midline)
• mesial (closest to midline)
• buccal (cheek)
• lingual (tongue)
• labial (lip)
• palatal (palate)
• occlusal (biting surface)
• incisal (incisal surface)