Occlusal Trauma (E2,L4) Flashcards

1
Q

_________: Defined as damage to the periodontium caused by stresses on the teeth produced directly or indirectly by teeth in the opposing jaw.

A

Perio Trauma from Occlusion

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2
Q

Trauma from occlusion is considered to be _________. Forces of occlusion that _______ the adaptive capacity of the periodontium.

A

PATHOLOGICAL…..EXCEED

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3
Q

The 4 variables of occlusal trauma to Perio disease are direction, magnitude, duration, and frequency of the _______.

A

FORCES

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4
Q

What are the three periodontal components affected by occlusal trauma? What 2 components of the periodontium are NOT affected by occ trauma???

A

Affected: 1.Cementum 2.PDL 3.Alveolar Bone Proper….NOT affected: 1. Gingiva 2.Junctional Epithelium

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5
Q

Clinical Symptoms of Occlusal Trauma: Radiographic evidence of “ ________”/”_______” PDL.

A

“thickened”/”widened”

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6
Q

Clinical Symptoms of Occlusal Trauma: Evidence of occlusal _____ in centric relation or centric occlusion

A

slide

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7
Q

Clinical Symptoms of Occlusal Trauma: Evidence of occlusal interference in ________ mandibular movement.

A

protrusive

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8
Q

Clinical Symptoms of Occlusal Trauma: Evidence of ______ and/or balancing side occlusal interferences.

A

working

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9
Q

YAY LATIN!!!! _______: a tremulous vibratory movement of a tooth when teeth come into functional contact – generally detected by finger palpation.

A

Fremitus!

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10
Q

Trauma from occlusion on the compression side: Compression of PDL fibers with INITIAL decrease in _____ of PDL space.

A

width

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11
Q

Trauma from occlusion on the compression side: Loss of _____ orientation.

A

PDL fiber

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12
Q

Trauma from occlusion on the compression side: Rupture of capillaries and hemorrhage into ____ perivascular spaces.

A

PDL

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13
Q

Trauma from occlusion on the compression side: Resorption of alveolar bone proper followed by _______ of PDL space.

A

widening

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14
Q

Trauma from occlusion on the compression side: If SEVERE, _____ resorption may occur

A

root!

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15
Q

WHICH SIDE displays surface resorption of bone and compacting of PDL?

A

Compression side of tooth movement! (like in ortho!)

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16
Q

Trauma from Occlusion: Tension side– Tension (stretching) of fibers with initial ______ in PDL space.

A

INCREASE

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17
Q

Trauma from Occlusion: Tension side–Rupture of ____ fiber bundles.

A

PDL

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18
Q

Trauma from Occlusion: Tension side– _______ of PDL capillaries and hemorrhage into PDL perivascular spaces.

A

Compression

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19
Q

Trauma from Occlusion: Tension side– _______ of new alveolar bone proper followed by _______ in PDL space.

A

Apposition…Decrease!

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20
Q

Trauma from Occlusion: Tension side– the cementum shows ______

A

tearing

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21
Q

Which type of occlusal trauma? Occurs when occlusal forces are excessive (increased) and the amount of alveolar bone support is normal.

A

PRIMARY occlusal trauma

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22
Q

Primary Occlusal Trauma from NON-Vertical Forces: Pressure points on bone and PDL with forces NOT in ______ of the tooth during excursive movements.

A

long axis

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23
Q

Which type of occlusal trauma? Occurs when occlusal forces are NORMAL OR EXCESSIVE and the amount of alveolar bone support is REDUCED.

A

SECONDARY occlusal trauma

24
Q

Occlusal HYPERfunction: _______ increase in occlusal force. Considered to be a ________ adaptation and not a _______ entity.

A

Slight….. physiologic…pathologic

25
Q

Occlusal HYPERfunction: ______ in number and diameter of collagen fiber bundles in PDL…._______ width of PDL

A

INCREASE….INCREASED

26
Q

Occlusal HYPERfunction: What happens to the density and thickness of alveolar bone proper (lamina dura)?

A

INCREASES density/thickness

27
Q

Occlusal HYPERfunction: Radiographic evidence of _________ of alveolar bone with PDL insertions.

A

osteosclerosis

28
Q

Occlusal HYPERfunction: ______ or ________ tooth mobility

A

slight or undetectable

29
Q

Occlusal HYPOfunction: A mild ________ of the tooth supporting structures due to lack of physiologic stimulation

A

weakening

30
Q

Occlusal HYPOfunction: Considered to be a ________ adaptation and not a ________ entity.

A

physiologic….pathologic

31
Q

Occlusal HYPOfunction: What is the ONLY method of diagnosing this condition?

A

HISTOLOGICALLY!

32
Q

Occlusal HYPOfunction: we see a _______ in number of PDL fiber bundles but normal _______.

A

decrease….orientation

33
Q

Occlusal HYPOfunction: ________ physiologic turnover and remodeling of alveolar bone.

A

decreased

34
Q

Occlusal HYPOfunction: ________ of PDL space.

A

NARROWING

35
Q

Occlusal HYPOfunction: what happens to tooth mobility?

A

no change

36
Q

_________: Total removal of occlusal forces resulting in lack of the level of physiologic stimulation required to maintain normal form and function. AGAIN: Considered to be a physiologic adaptation rather than a pathologic feature of disease.

A

Disuse Atrophy

37
Q

DISUSE ATROPHY: Radiographic evidence of _______ width of PDL space.

A

decreased

38
Q

DISUSE ATROPHY: _______ tooth mobility is always present.

A

increased

39
Q

DISUSE ATROPHY: Absence of occlusal ________

A

antagonist

40
Q

DISUSE ATROPHY: Loss of ________ of the principle fiber bundles of the PDL

A

orientation

41
Q

DISUSE ATROPHY: Significant ________ in number of bony trabeculae, i.e., localized osteoporosis

A

decrease

42
Q

Really Big Take Home Message! Occ Trauma&Perio Disease: Trauma from occlusion, in the absence of inflammation DOES NOT CAUSE 1._________ 2.________ 3.________. They are caused by bacteria, but yes occ trauma can exacerbate these.

A

1.gingivitis 2.periodontitis 3.pocket formation

43
Q

Monkey & Dog Research: When bone loss is the result of periodontitis in the presence of occlusal trauma, removal of the occlusal trauma will not result in ________ of crestal bone.

A

regeneration

44
Q

Monkey & Dog Research: Bone alterations resulting from occlusal trauma alone are ________ when the trauma is removed.

A

REVERSIBLE!

45
Q

Monkey & Dog Research: When bone loss is the result of periodontitis in the presence of occlusal trauma, removal (treatment) of both will result in a remarkable, but not complete, _________ of bone .

A

regeneration

46
Q

Boom. Main Point..Monkey & Dog Research: Periodontitis with superimposed occlusal trauma produces ______ bone loss than periodontitis alone.

A

MORE

47
Q

Human Research: Study provides strong evidence of an association between untreated occlusal discrepancies and the progression of periodontal disease. In addition, the study shows that occlusal treatment significantly ______ the progression of periodontal disease over time.

A

REDUCES

48
Q

What is usually the first treatment for malocclusion/palatal impingement?

A

ortho!

49
Q

_______ disease: The creation of additional problems or complications as a result of treatment.

A

IATROGENIC

50
Q

_______ of crowns and gingival ______ of crowns and restorations were important determinants of periodontal health.

A

contour….margins

51
Q

Gingival margin ________ of interproximal restorations are associated with periodontal pockets that are significantly deeper than sites where there is no restoration.

A

OVERHANGS

52
Q

Gingival inflammation and plaque retention scores show significant decreases following removal of the _______.

A

overhang

53
Q

Gingival Margin _______ are associated with gingival inflammation, bone loss, and microbial plaque and calculus accumulation.

A

overhangs

54
Q

What is the optimal CROWN to ROOT ratio??

A

C1:1.5-2R

55
Q

Force vectors outside the long axis of the roots tend to produce a rocking motion and _____ bone loss

A

vertical