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Test your basic knowledge |
Dentistry Occlusion
Start Test
Study First
Subjects
:
health-sciences
,
dentistry
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When the jaws are closed - the buccal cusps of the mandibular posterior teeth are interlocked between the buccal & lingual cusps of the maxillary teeth
Open bite
molar relationship
drifted mesial
Intercuspation
2. Middle 3rd
premature curve of spee
functional occlusion
non working or balancing side
moderate overbite
3. During selective grinding - occlusion should be adjusted In what four relationships
class II malocclusion
Unilateral crossbite occurs when
centric occlusion - centric relation - protrusive and lateral movements
curve of wilson
4. Maximum interlocking of cusp
class II - div 2
An ideal curve of spee would be
Unilateral crossbite occurs when
intercuspation
5. Anterior crossbite; max/mand incisors-edge to edge occlusion; crowded mand. incisors
Edge to edge bite occurs when
curve of wilson
end to end
conditions that occur in class III
6. Cusps of maxillary teeth directly over cusps of mandibular teeth
Misalignment of teeth
labialversion or buccoversion
Edge to edge bite occurs when
Working side
7. Widening of the PDL in areas under pressure results due to
functional occlusion
class III
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
osteoclast resorption
8. Mandibular molars more distal than maxillary molars
Overbite is a ___ measurement
centric occlusion - centric relation - protrusive and lateral movements
centric relation
distal step
9. Aquired centric occlusion - habitual occlusion - convienience occlusion - or intercuspal position
Abfraction
Centric occlusion is also called
drifted mesial
canine relationship
10. Maximum touching of max and mand
conditions that occur in class III
posterior contact
interdigitation
Centric occlusion is also called
11. Vertical
Lateral excursion
Overbite is a ___ measurement
posterior contact
diastemas
12. Starts closer to the posterior of the 1st molar
overbite
premature curve of spee
late curve of spee
occlusal erosion
13. Excessive deposition of cementum around the apex - due to excessive occlusal forces
hypercementosis
anterior teeth
molar relationship
intercuspation
14. Normal contacts between max. and mand. teeth; momentary contacts
malocclusion
parafunctional contacts
conditions that occur in class III
functional contacts
15. Need tooth to tooth contact on both working and non working sides to func effectively
Maxillary posterior teeth vertical alignment
functional contacts
class II division I occlusion
Dentures
16. Incisal 3rd
normal overbite
causes of primary occlusal trauma
Protrusion
occlusion pattern
17. Occlusal forces will accelerate the rate of perio destruction and result in CT attachment loss in the presence of preexisting inflammation
causes of primary occlusal trauma
codestructive theory
hawley appliance
edge to edge
18. Maxillary anterior teeth stick out labially from tongue thrusting
distal step
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
Protrusion
secondary occlusal trauma
19. Starts around the mesial of the 1st molar
class II division I occlusion
occlusal erosion
secondary occlusal trauma
normal curve of spee
20. Any occl that produces forces that directly or indirectly cause injury to the attachment apparatus
canine relationship
traumatogenic occlusion
Mandibular posterior teeth vertical alignment
If the condyles continue to grow - extreme mesial step will turn into ___
21. When one tooth hits before all others when closing teeth together(may cause TMJ problems)
occlusion
Premature contact
dynamic occlusion
curve of wilson
22. Selective grinding should always be completed after ______ has been controlled
Overbit
class II division I occlusion
curve of spee
inflammation
23. What is not affected by occ trauma
gingiva
conditions that occur in class II - div 2
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
osteoclast resorption
24. ____ is not a sign of occl trauma
occlusal erosion
Hereditary factors include
Mandibular posterior teeth vertical alignment
other names for centric occlusion
25. If the mandible moves to the left - the mvmt is known as a left working movement
molar relationship
causes of primary occlusal trauma
secondary occlusal trauma
left working movement
26. #7 - 26 - 27
crossbite
other names for centric occlusion
centric occlusion
molar relationship
27. Vertical overlapping
infraversion
dynamic occlusion
overbite
functional occlusion
28. Position of the mandible relative to the maxilla during swallowing and other times when the jaw muscles contract
temporalis and masseter
infraversion
centric occlusion
Centric relation
29. High restoration - parafunctional habits - malpositioned tooth - periapical abcess - physical 'blow' - removable partial - ortho mvmt
causes of primary occlusal trauma
class II
Lateral excursion
class II malocclusion
30. Does not result from brushing at all - but from traumatic lateral forces placed on the teeth as a result of a malocclusion or abnormal tongue activity. Root surface is exposed & can become carious
Midline deviation
Abfraction
causes of primary occlusal trauma
vertical overlap
31. Both sides
primary occlusal trauma
Bilateral crossbite occurs on...
conditions that occur in class II - div I
Open bite
32. Mandibular molars more mesial than maxillary molars (most children)
conditions that occur in class II - div I
Overjet is a ___ measurement
mesial step
normal curve of spee
33. Anterior; no horizontal overlap
physiologic occlusion
edge to edge
Centric relation
Condyles of the mandible continue grow ___than the maxilla
34. Muscles that work the jaw; may become sore due to occ trauma
protrusive occlusion
From a frontal view - anterior teeth lean ___
temporalis and masseter
end to end
35. Lateral mvmt results in contacct of all posterior teeth
group function
Underjet
functional occlusion
Edge to edge bite occurs when
36. Tooth extracted
fremitus
canine guidance or protection
drifted mesial
supraversion
37. Retrognathic profile; buccal groove of mand 1st molar-distal to mb cusp of max 1st; distal of mand. canine distal to mesial to max caniine - tendency toward class II
class II - div 2
gingiva
Open bite
Overjet
38. During protrusive occ - ______ is considered undesirable
curve of spee
class II - div 2
splinting
posterior contact
39. Maxillary overlap mandibular; whole arch
posterior contact
codestructive theory
horizontal overlap
Misalignment of teeth
40. Curve spee & wilson - 3-d - not proven
curve of monson
pathologic tooth migration
left working movement
crestal funneling
41. Anterior or posterior; bilateral or unitlateral - anterior more common
open bite
moderate overbite
class II
centric relation
42. Transverse occlusal curvature; posterior teeth; medio-lateral postion (r-l)
curve of spee
curve of wilson
centric occlusion
infraversion
43. Reshaping of the occ or incisal surfaces of teeth to create contacts btwn upper and lower dentition
Underjet
selective grinding or occlusal equilibration
anterior crossbite
Premature contact
44. Teeth are misaligned when biting together
From a frontal view - anterior teeth lean ___
posterior crossbite
osteoclast resorption
Malocclusion
45. Tongue thrust or thumb sucking can cause
normal overbite
Mandibular posterior teeth vertical alignment
class II division I occlusion
curve of spee
46. Excessive occ force with adequate bone support =
primary occlusal trauma
protrusive occlusion
premature occlusal contact
primate spaces
47. Crowns tipped lingually - roots tipped laterally
moderate overbite
class II division I occlusion
Mandibular posterior teeth vertical alignment
labialversion or buccoversion
48. Maxillary incisors are are lingual to mandibular incisors
edge to edge
Underjet
causes of open bite
functional contacts
49. Most common cause is when the maxilla does not grow in proportion to the mandible
Midline deviation
causes of open bite
Crossbite
class II - div 1
50. Mand. facial or lingual to max. - unitlateral or bilateral; incorrect horizontal overlap
posterior crossbite
Malocclusion
class III - classificaiton
physiologic occlusion