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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. Starts around the mesial of the 1st molar
Centric(habitual) occlusion
infraversion
normal curve of spee
conditions that occur in class II - div I
2. When the jaws are closed - the buccal cusps of the mandibular posterior teeth are interlocked between the buccal & lingual cusps of the maxillary teeth
diastemas
Intercuspation
occlusion pattern
centric relation
3. A continuation of the spee of to extend through the condyle
From a frontal view - anterior teeth lean ___
An ideal curve of spee would be
normal overbite
Open bite
4. Habitual - acquired - convenience - intercuspal & static
Condyles of the mandible continue grow ___than the maxilla
From a frontal view - anterior teeth lean ___
other names for centric occlusion
Underjet
5. Malposition - crowded anterior teeth - protruded or retruded max incisors - anterior/posterior crossbite - mesial drift
inflammation
Overjet
conditions that occur in class I malocclusion
Centric relation
6. Need tooth to tooth contact on both working and non working sides to func effectively
Centric relation
codestructive theory
Dentures
mesial step
7. Growth hormone imbalance that causes the mandible to grow faster than the maxilla(all teeth are in crossbite)
traumatic overbite
occlusal trauma
Acromegaly
edge to edge
8. 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
Misalignment of teeth
Overbit
class II malocclusion
left working movement
9. Any occl that produces forces that directly or indirectly cause injury to the attachment apparatus
Lateral excursion
premature curve of spee
traumatogenic occlusion
Retrusion
10. Posterior; no horizontal overlap
end to end
class II malocclusion
primate spaces
Centric(habitual) occlusion
11. Maxillary-between canines and laterals - mandibular-between canines and 1st molars
normal curve of spee
pathologic tooth migration
primate spaces
temporalis and masseter
12. Malocclusion cause excessive incisal or occlusal wear(attrition); teeth continue to erupt in order to occlude with teeth in the opposite arch & roots become exposed
overjet
Attrition
anterior crossbite
Condyles of the mandible continue grow ___than the maxilla
13. Mandible moves to the right or left
From a frontal view - anterior teeth lean ___
conditions that occur in class I malocclusion
Lateral excursion
class I
14. Any deviation from the ideal or normal occl. includes crowding - malpositioned or tipped teeth
Unilateral crossbite occurs when
premature occlusal contact
curve of wilson
malocclusion
15. Patients show evidence or signs and syptoms of occ disease
other names for centric occlusion
Curve of Wilson
overjet
pathologic occlusion
16. A tooth that occludes with an opposing tooth before full closure is achieved in centric occlusion
premature occlusal contact
Edge to edge bite occurs when
crossbite
Overjet is a ___ measurement
17. Tongue thrusting; thumb sucking - pacifiers
torsoversion
causes of open bite
Open bite
centric occlusion - centric relation - protrusive and lateral movements
18. Severe ging inflammation extending into CT attachment - loss of supporting alveolar bone - pregnancy - ortho mvmt - and surgical therapy - may all cause ______
crossbite
premature curve of spee
tooth mobility
From a frontal view - anterior teeth lean ___
19. 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
Attrition
centric occlusion
Unilateral crossbite occurs when
gingiva
20. Mvmt of the mandible in a direction anterior to centric occ
conditions that occur in class III
severe overbite
protrusive occlusion
tooth mobility
21. Incisal 3rd
normal overbite
curve of wilson
class II - div 1
protrusive occlusion
22. Mesially - Labially
physiologic occlusion
class II - div 2
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
Centric relation
23. 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
physiologic occlusion
Premature contact
Misalignment of teeth
Retrusion
24. Middle 3rd
moderate overbite
splinting
supraversion
Centric relation
25. Below occlusal plane
distal step
infraversion
Overjet
mesial step
26. The relationship of the teeth in the mandibular arch to those in the maxillary arch as they are brought together
Intercuspation
Edge to edge bite occurs when
occlusion
torsoversion
27. High restoration - parafunctional habits - malpositioned tooth - periapical abcess - physical 'blow' - removable partial - ortho mvmt
causes of primary occlusal trauma
inter-arch
tooth mobility
other names for centric occlusion
28. Vibrational mvmt of a tooth under occ function
causes of primary occlusal trauma
severe overbite
fremitus
infraversion
29. Tooth-tooth contacts; tooth-hard objects contacts; tooth-oral tissues contact
divisions of parafunctional contacts
Nonworking side
anterior teeth
overjet
30. Normal contacts between max. and mand. teeth; momentary contacts
An ideal curve of spee would be
causes of open bite
functional contacts
horizontal overlap
31. Horizontal
other names for centric occlusion
mesial step
primate spaces
Overjet is a ___ measurement
32. Anterior or posterior; bilateral or unitlateral - anterior more common
If the maxilla outgrows the mandible - a Class ___ of permanent teeth occurs
Misalignment of teeth
open bite
Bilateral crossbite occurs on...
33. Tongue thrust or thumb sucking can cause
labialversion or buccoversion
class II division I occlusion
drifted mesial
anterior crossbite
34. Curved alignment of the occlusal plane when looking from a posterior view(right to left)
gingiva
curve of monson
normal overbite
Curve of Wilson
35. Mandibular molars more distal than maxillary molars
posterior crossbite
distal step
leeway spaces
secondary occlusal trauma
36. Prognathic profile
class III
physiologic occlusion
functional contacts
vertical overlap
37. Buck teeth are common and are considered
class II malocclusion
splinting
traumatic overbite
Underjet
38. Mb cusp of max 1st molar-buccal groove of mand 1st molar
molar relationship
functional occlusion
Working side
supraversion
39. Survival of the dentition despite its deviation from a preconceived hypothetical normal
centric occlusion - centric relation - protrusive and lateral movements
Condyles of the mandible continue grow ___than the maxilla
physiologic occlusion
Maxillary posterior teeth vertical alignment
40. Position of the mandible relative to the maxilla during swallowing and other times when the jaw muscles contract
infraversion
occlusal trauma
Centric relation
From lateral view - all teeth(except max.3rds) lean ___; anterior teeth lean ___
41. #7 - 26 - 27
Intercuspation
conditions that occur in class III
fremitus
crossbite
42. Mandibular molars and maxillary molars are even
flush terminal plane
Misalignment of teeth
inflammation
dynamic occlusion
43. During protrusive occ - ______ is considered undesirable
posterior contact
Maxillary posterior teeth vertical alignment
Protrusion
conditions that occur in class II - div 2
44. Curve of the occlusal plane; from anterior to posterior - increases with age
Centric occlusion is also called
Misalignment of teeth
curve of spee
parafunctional contacts
45. Excessive occ force with adequate bone support =
tooth mobility
primary occlusal trauma
conditions that occur in class II - div 2
Abfraction
46. Lateral mvmt results in contact btwn the max and mand canines
conditions that occur in class III
canine guidance or protection
centric relation
anterior crossbite
47. Reshaping of the occ or incisal surfaces of teeth to create contacts btwn upper and lower dentition
selective grinding or occlusal equilibration
primate spaces
pathologic occlusion
class II
48. Laterally
Unilateral crossbite occurs when
From a frontal view - anterior teeth lean ___
horizontal overlap
pathologic occlusion
49. When one tooth hits before all others when closing teeth together(may cause TMJ problems)
class II division I occlusion
class III
Centric(habitual) occlusion
Premature contact
50. Abnormal contacts; occlusal habits - and neuroses
codestructive theory
functional occlusion
malocclusion
parafunctional contacts