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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. Mesially - Labially
group function
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
Mandibular posterior teeth vertical alignment
premature occlusal contact
2. Aquired centric occlusion - habitual occlusion - convienience occlusion - or intercuspal position
end to end
Centric occlusion is also called
leeway spaces
tooth mobility
3. 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
premature curve of spee
Overbit
class III - classificaiton
Maxillary posterior teeth vertical alignment
4. Tongue thrusting; thumb sucking - pacifiers
divisions of parafunctional contacts
causes of open bite
normal curve of spee
physiologic occlusion
5. Anterior or posterior; bilateral or unitlateral - anterior more common
other names for centric occlusion
open bite
hawley appliance
conditions that occur in class I malocclusion
6. The side to which the mandible moves(chewing side)
primate spaces
Unilateral crossbite occurs when
From a frontal view - anterior teeth lean ___
Working side
7. 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
functional contacts
class II - div 1
posterior crossbite
diastemas
8. The way you normally bite your teeth together when not chewing
An ideal curve of spee would be
Centric(habitual) occlusion
intercuspation
normal overbite
9. Because the permanent premolars are narrower than the primary molars that they replace - this is what happens when the premolars erupt
Leeway space
supraversion
Overjet
crestal funneling
10. Malposition - crowded anterior teeth - protruded or retruded max incisors - anterior/posterior crossbite - mesial drift
pathologic occlusion
conditions that occur in class I malocclusion
The cusps of the ___ teeth overlap the cusps of the ____ teeth so that the buccal cusps of the maxillary teeth are ___ to the buccal cusps of the mandibular teeth
Bilateral crossbite occurs on...
11. Individual teeth from each arch can be involved in ________________ malocclusion
inter-arch
physiologic occlusion
horizontal overlap
occlusal erosion
12. Curved alignment of the occlusal plane when looking from a posterior view(right to left)
posterior crossbite
conditions that occur in class I malocclusion
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
Curve of Wilson
13. Curve spee & wilson - 3-d - not proven
curve of monson
occlusion
anterior crossbite
class II - div 1
14. Mand. retruded-max. incisors protruded; deep overbite; excessive overjet - abnormal muscle function - short mandible - short upper lip
conditions that occur in class I malocclusion
Overjet is a ___ measurement
intercuspation
conditions that occur in class II - div I
15. Survival of the dentition despite its deviation from a preconceived hypothetical normal
secondary occlusal trauma
centric relation
physiologic occlusion
molar relationship
16. 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
Unilateral crossbite occurs when
overjet
From a frontal view - anterior teeth lean ___
Overjet is a ___ measurement
17. Cusps of maxillary teeth directly over cusps of mandibular teeth
How the diastemas are closed up(including primates spaces)
An ideal curve of spee would be
intercuspation
Edge to edge bite occurs when
18. Teeth are misaligned when biting together
selective grinding or occlusal equilibration
late curve of spee
open bite
Malocclusion
19. Any occl that produces forces that directly or indirectly cause injury to the attachment apparatus
Overbite is a ___ measurement
Curve of Wilson
Overbit
traumatogenic occlusion
20. Both sides
causes of open bite
left working movement
Bilateral crossbite occurs on...
selective grinding or occlusal equilibration
21. What is not affected by occ trauma
pathologic occlusion
gingiva
anterior teeth
class II - div 2
22. Cervical 3rd
secondary occlusal trauma
selective grinding or occlusal equilibration
linguoversion
severe overbite
23. Mvmt of the mandible in a direction anterior to centric occ
curve of spee
labialversion or buccoversion
If the condyles continue to grow - extreme mesial step will turn into ___
protrusive occlusion
24. Excessive occ force with adequate bone support =
diastemas
primary occlusal trauma
Open bite
canine guidance or protection
25. Maxillary anterior teeth stick out labially from tongue thrusting
Overbit
Protrusion
Centric occlusion is also called
class II - div 2
26. The tooth has insufficient bone support and normal chewing and swallowing forces are excessive - causing injury to the attachment appartatus
Unilateral crossbite occurs when
underjet
interdigitation
secondary occlusal trauma
27. When one tooth hits before all others when closing teeth together(may cause TMJ problems)
Premature contact
Mandibular posterior teeth vertical alignment
left working movement
malocclusion
28. Mandibular molars more mesial than maxillary molars (most children)
physiologic occlusion
class II division I occlusion
Attrition
mesial step
29. Max. incisors lingual to mand. incisors; incorrect horizontal overlap
posterior contact
functional occlusion
anterior crossbite
Bilateral crossbite occurs on...
30. #10 & #23
normal overbite
labialversion or buccoversion
openbite
class II
31. Permits healing of the attachment apparatus by holding a tooth in a totally fixed position; allows the PDL to become narrower and the mobility to be reduced
Dentures
splinting
class II - div 1
occlusion
32. Growth hormone imbalance that causes the mandible to grow faster than the maxilla(all teeth are in crossbite)
Acromegaly
class II
temporalis and masseter
Leeway space
33. When the jaws are closed - the buccal cusps of the mandibular posterior teeth are interlocked between the buccal & lingual cusps of the maxillary teeth
divisions of parafunctional contacts
Overbite is a ___ measurement
mesial step
Intercuspation
34. Most common cause is when the maxilla does not grow in proportion to the mandible
Crossbite
posterior crossbite
traumatic overbite
centric occlusion
35. Vertical overlapping
Retrusion
Overjet
overbite
leeway spaces
36. If the mandible moves to the left - the mvmt is known as a left working movement
leeway spaces
selective grinding or occlusal equilibration
centric occlusion
left working movement
37. Habitual - acquired - convenience - intercuspal & static
distal step
other names for centric occlusion
Hereditary factors include
underjet
38. II (mal)occlusion
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
Centric(habitual) occlusion
premature occlusal contact
Centric occlusion is also called
39. 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
Retrusion
class I
late curve of spee
splinting
40. Reshaping of the occ or incisal surfaces of teeth to create contacts btwn upper and lower dentition
selective grinding or occlusal equilibration
centric occlusion - centric relation - protrusive and lateral movements
occlusion
Overbit
41. Mand. retruded-one or more max. incisors retruded; max. laterals protruded-max centrals retruded; crowded max anterior teeth; deep overbite
conditions that occur in class II - div 2
Condyles of the mandible continue grow ___than the maxilla
Midline deviation
Curve of Spee
42. Widening of the PDL in areas under pressure results due to
osteoclast resorption
non working or balancing side
conditions that occur in class I malocclusion
vertical overlap
43. Prognathic profile; buccal groove of mand. 1st molar-mesial to mb cusp of max. 1st molar; distal of mand. canine mesial to mesial of max canine; tendency toward class III
openbite
class III - classificaiton
posterior crossbite
An ideal curve of spee would be
44. During a left working movement - the right side is known as the
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
Edge to edge bite occurs when
non working or balancing side
crossbite
45. Injury to the attachment apparatus (bone - PDL - and cementum) as a consequence of normal or excessive occ forces
diastemas
Midline deviation
Edge to edge bite occurs when
occlusal trauma
46. Can be caused by forces of malocclusion - teeth can become loose - periodontal disease may develop(alveolar bone loss)
Misalignment of teeth
Leeway space
drifted mesial
openbite
47. Functional occlusion
moderate overbite
dynamic occlusion
edge to edge
drifted mesial
48. Need tooth to tooth contact on both working and non working sides to func effectively
Centric(habitual) occlusion
From a frontal view - anterior teeth lean ___
Dentures
physiologic occlusion
49. 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
drifted mesial
edge to edge
tooth mobility
class II - div 2
50. Primary teeth set ___________________ for permanent
occlusion pattern
normal curve of spee
Curve of Wilson
traumatic overbite