Vertical Problems

Question 1

overbite

Answer 1

amount of overlap of the lower incisors by the central incisors

Question 2

overbite
measured in percentage: normal is

Answer 2

20% +/-5

Question 3

amount of overbite is not directly related to

Answer 3

severity of malocclusion

Question 4

overbite
etiological factors (4)

Answer 4

over eruption of upper incisors
over eruption of lower incisors
under eruption of lower posterior teeth
genetics development (C1 II Div 2)

Question 5

growth considerations (3)

Answer 5

do deep bites improve with growth?
do they remain constant?
do they improve?

Question 6

class 2 deep bite (2)

Answer 6

over eruption of max incisors
over eruption of mand incisors

Question 7

intrusion arch

Answer 7

correct the two step occlusal plane

Question 8

leveling the curve of spee (3)

Answer 8

max incisors have been intruded
leveling the lower arch by incisors intrusion
extrusion of mand posterior teeth

Question 9

achieved tx goals
(2)

Answer 9

overbite went from 100% + to 30% and back to 40% after some relapse
one way to avoid relapse is to provide a Hawley retainer with an anterior bite plate to maintain the corrected overbite

Question 10

disocclusion, intrusion, IPR (3)

Answer 10

bite opening with posterior blocks intrusion of lower incisors with light wire and constant force
upper incisors are left at the same level

Question 11

skipped
extrusion of posterior segements

Answer 11

combined to max incisor intrusion

Question 12

tx options (2)

Answer 12

bite plate at night
lower intrusion arch

Question 13

therapeutics
—- hg to correct class 2 molar relation, extrude molars
— for max incisors, lower molar eruption with a —-

Answer 13

cervical pull
intrusion arch
bite plate

Question 14

2 years post tx (5)

Answer 14

corrected class 2
reduced overbite
torqued incisors
leveled curve of spee
coordinated arches

Question 15

open bite (4)

Answer 15

genetic origin
fxn origin
parafunctional habits
combination

Question 16

open bite multifactorial etiologies
(5)

Answer 16

skeletal (genetic)
tongue thrust
finger habit
sleep apnea
neuromuscular

Question 17

anterior open bites are present in a multitude of —
etiologies are —
no prospective studies, mainly case studies and opinons
— rate is reported as significant and higher than non open bite malocclusions

Answer 17

malocclusions
ill defined
relapse

Question 18

facial characteristics
(6)

Answer 18

facial type
lip support
lip seal
upper incisor showing at rest
smile line
facial proportions

Question 19

facial type (2)
lip support:
lip seal:
upper incisor showing at rest:
smile line:
facial proportions:

Answer 19

variable
usually dolychocephalic tendency
altered
deficient
variable but usually increased
altered
variable

Question 20

dentoalevolar response causing an open bite (3)

Answer 20

displacement of max incisors in the vertical and AP plane
intrusion and proclination of mand incisors
over eruption of max and/or mand molars

Question 21

occlusal plane analysis (2)

Answer 21

assess the position of posterior and anterior teeth in relation to the functional occlusal plane
hard to determine as the anterior teeth are often times displaced in the vertical plane

Question 22

diff dx (5)

Answer 22

anterior tongue posture
thumb sucking habit
genetics
sleep apnea
combo

Question 23

parafunctional habits (3)

Answer 23

thumb sucking habit
anterior tongue position
-dentoalveolar deformation and lack of tooth eruption

Question 24

thumb sucking pt tx (4)

Answer 24

fixed appliances
tongue crib
psychological support
myofunctional therapy

Question 25

AOB neuromuscular origin (5)

Answer 25

anterior tongue postition
max incisors pushed labially
mand incisors under erupted
good post occlusion
good facial bone

Question 26

dx (4)

Answer 26

moderate max retrognathia
moderate mand prognathism
dental crowding with blocked out canines
severe open bite

Question 27

— malocclusions are difficult to correct and may prove to be unpredictable in their management and outcome

Answer 27

vertical

Question 28

— must be considered as no improvement or worsening of the condition may be expected

Answer 28

growth