Orthodontic Lab 1

Question 1

what is IOTN

Answer 1

comprised of aesthetic dental component and dental health component
ranks malocclusions in terms of significance of occlusal traits

Question 2

what is the aesthetic component of IOTN

Answer 2

scale of 10 colour photos showing different level of dental attractiveness with 1 being most and 10 being least attractive

Question 3

what do aesthetic grades 1-4 suggest

Answer 3

no/ slight need for treatment

Question 4

what do aesthetic grades 5-7 suggest

Answer 4

moderate need for treatment

Question 5

what do aesthetic grades 8-10 suggest

Answer 5

need for orthodontic treatment

Question 6

what is MOCDO abbreviated from

Answer 6

Missing teeth
Overjets
Crossbites
Displacement of Contact points
Overbites and open bites

Question 7

what is the DHC ruler

Answer 7

used chairside or on dental casts to measure the malocclusions

Question 8

using the DHC ruler for overjets 3.5mm to 6mm on dental casts what would you assume about the lips

Answer 8

they are incompetent

Question 9

when using the DHC ruler on a cast with crossbites what would you assume about the discrepancy between RCP and ICP

Answer 9

greater than 2mm

Question 10

when using DHC on study cast what would you assume about reverse overjets

Answer 10

masticatory or speech problems are presents

Question 11

what is recorded using upper left side of the DHC ruler

Answer 11

positive overjets

Question 12

what is recorded using lower left side of DHC ruler

Answer 12

reverse overjets

Question 13

what is the right side of the DHC ruler used for

Answer 13

recording contact points, displacements and open bites