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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. Retrognathic profile -buccal groove of mand. 1st molar-distal to mb cusp of 1st max.molar -distal of mand canine distal to mesial of max canine - tendency towards class II
distal step
pathologic tooth migration
class II - div 1
edge to edge
2. Excessive deposition of cementum around the apex - due to excessive occlusal forces
Mandibular posterior teeth vertical alignment
Centric occlusion is also called
hypercementosis
class II malocclusion
3. Teeth are misaligned when biting together
Hereditary factors include
Intercuspation
Midline deviation
Malocclusion
4. Tongue thrust or thumb sucking can cause
class II division I occlusion
inter-arch
codestructive theory
class II
5. Curved alignment of the occlusal plane when looking from a lateral view(distal to mesial)
horizontal overlap
pathologic occlusion
Curve of Spee
Overbite is a ___ measurement
6. Widening of the PDL in areas under pressure results due to
molar relationship
interdigitation
osteoclast resorption
anterior crossbite
7. Contact between maxillary incisors does not line up with contact of mandibular incisors
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
Midline deviation
distal step
curve of spee
8. 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
Open bite
Abfraction
pathologic occlusion
centric occlusion
9. The side to which the mandible moves(chewing side)
Working side
conditions that occur in class I malocclusion
centric occlusion
anterior teeth
10. Mand. retruded-max. incisors protruded; deep overbite; excessive overjet - abnormal muscle function - short mandible - short upper lip
centric occlusion
conditions that occur in class II - div I
conditions that occur in class II - div 2
openbite
11. Measurement of horizontal overlap w/ probe
primary occlusal trauma
protrusive occlusion
overjet
Protrusion
12. Max. incisors lingual to mand. incisors; incorrect horizontal overlap
Open bite
causes of primary occlusal trauma
Overbit
anterior crossbite
13. Patient forces teeth together in centric occlusion on one side to get a more functional bite and has a crossbite on the other side(the midline of the maxillary anterior teeth does not line up with the midlineof the mandible
normal curve of spee
Unilateral crossbite occurs when
causes of open bite
hawley appliance
14. The relationship of the teeth in the mandibular arch to those in the maxillary arch as they are brought together
occlusion
conditions that occur in class III
primary occlusal trauma
anterior teeth
15. During protrusive occ - ______ is considered undesirable
posterior contact
centric relation
divisions of parafunctional contacts
posterior crossbite
16. Later
Condyles of the mandible continue grow ___than the maxilla
drifted mesial
Centric occlusion is also called
curve of monson
17. Individual teeth from each arch can be involved in ________________ malocclusion
splinting
inter-arch
Curve of Wilson
centric occlusion
18. After periodontal sugery - mobility will ________
decrease over time
canine relationship
selective grinding or occlusal equilibration
Maxillary posterior teeth vertical alignment
19. Survival of the dentition despite its deviation from a preconceived hypothetical normal
Bilateral crossbite occurs on...
late curve of spee
physiologic occlusion
primate spaces
20. Usually indicative of moderate to sever perio and secondary occ trauma
flush terminal plane
pathologic tooth migration
Hereditary factors include
other names for centric occlusion
21. Vertical overlapping
overbite
centric relation
Leeway space
Intercuspation
22. Difference between primary and secondary occ trauma
bone support
normal curve of spee
centric relation
An ideal curve of spee would be
23. Maximum touching of max and mand
horizontal overlap
intercuspation
interdigitation
vertical overlap
24. Reshaping of the occ or incisal surfaces of teeth to create contacts btwn upper and lower dentition
malocclusion
selective grinding or occlusal equilibration
conditions that occur in class II - div I
Intercuspation
25. Both sides
Bilateral crossbite occurs on...
centric relation
vertical overlap
bone support
26. Relationship of the teeth in which the incisal ridges of the maxillary anterior teeth extend below the incisal edges of the mandibular anterior teeth when the teeth are placed in a centric occlusal relationship
Overbit
class II - div 1
Edge to edge bite occurs when
primary occlusal trauma
27. Most common cause is when the maxilla does not grow in proportion to the mandible
infraversion
pathologic occlusion
Crossbite
Intercuspation
28. Because the permanent premolars are narrower than the primary molars that they replace - this is what happens when the premolars erupt
canine guidance or protection
normal curve of spee
Leeway space
dynamic occlusion
29. Position of the mandible relative to the maxilla during swallowing and other times when the jaw muscles contract
osteoclast resorption
Centric relation
hawley appliance
premature occlusal contact
30. Associated with performance; all contacts during function of the oral cavity
Curve of Wilson
openbite
functional occlusion
conditions that occur in class II - div I
31. High restoration - parafunctional habits - malpositioned tooth - periapical abcess - physical 'blow' - removable partial - ortho mvmt
late curve of spee
Overbit
Centric occlusion is also called
causes of primary occlusal trauma
32. Starts around the mesial of the 1st molar
normal overbite
flush terminal plane
normal curve of spee
An ideal curve of spee would be
33. Incisal 3rd
normal overbite
protrusive occlusion
premature occlusal contact
decrease over time
34. Buck teeth are common and are considered
molar relationship
class II malocclusion
Attrition
Hereditary factors include
35. #10 & #23
openbite
Attrition
traumatogenic occlusion
Occlusion can be affected by
36. Horizontal
conditions that occur in class III
Overjet is a ___ measurement
causes of open bite
hypercementosis
37. Rotated or twisted; rotated mesial or distal
anterior crossbite
anterior teeth
Curve of Wilson
torsoversion
38. Mesially - Labially
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
horizontal overlap
diastemas
Overbite is a ___ measurement
39. Transverse occlusal curvature; posterior teeth; medio-lateral postion (r-l)
tooth mobility
curve of wilson
Mandibular posterior teeth vertical alignment
class II division I occlusion
40. The patient is constantly tightening the lower lip against the lower anterior teeth causing the the mandibular teeth to be pushed back into the mouth by this overdeveloped lower lip
conditions that occur in class III
Retrusion
functional occlusion
centric occlusion
41. The permanent molars erupt posterior to the primary teeth and push them all mesially
class II malocclusion
occlusal trauma
severe overbite
How the diastemas are closed up(including primates spaces)
42. Habitual - acquired - convenience - intercuspal & static
class III
molar relationship
other names for centric occlusion
occlusal trauma
43. Any deviation from the ideal or normal occl. includes crowding - malpositioned or tipped teeth
From a frontal view - anterior teeth lean ___
malocclusion
Protrusion
class II - div 1
44. Guidance for protrusive occ should be on the
gingiva
Overjet
open bite
anterior teeth
45. Cusps of maxillary teeth directly over cusps of mandibular teeth
normal overbite
Edge to edge bite occurs when
centric relation
labialversion or buccoversion
46. Crowns tipped lingually - roots tipped laterally
centric occlusion - centric relation - protrusive and lateral movements
Mandibular posterior teeth vertical alignment
occlusal trauma
conditions that occur in class I malocclusion
47. Most retruded position of the mandible in relation to the maxilla From which lateral mvmts of the jaw can be made
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
underjet
centric relation
interdigitation
48. 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
codestructive theory
intercuspation
curve of spee
49. Curved alignment of the occlusal plane when looking from a posterior view(right to left)
openbite
Curve of Wilson
dynamic occlusion
Underjet
50. Vertical
Open bite
divisions of parafunctional contacts
edge to edge
Overbite is a ___ measurement