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MODULE 3: CLINICAL SCIENCES “B” 65Q > Orthodontic Perio, Endo & Restorative Treatment 18% 12Q > Flashcards

Orthodontic Perio, Endo & Restorative Treatment 18% 12Q Flashcards

1
Q

which organism must be present in periodontal disease?

A

Porphyromonas Gingivalis

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2
Q

during orthodontic Tx, which organism is present in higher numbers?

A

Bacteroides Gingivalis

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3
Q

which organism has an association with juvenile periodontitis?

A

AA - Actinobacillus actinomycetemcomitans

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4
Q

Match the condition and associated organisms: Strep M, AA, Strep A, BG, Staph A, PG

  1. Perio:
  2. Ortho Perio:
  3. Juvenile Perio:
  4. Caries:
  5. Rheum Fever:
  6. Osteomyelitis:
A
  1. Perio: PG
  2. Ortho Perio: BG
  3. Juvenile Perio: AA
  4. Caries: Strep M
  5. Rheum Fever: Strep A
  6. Osteomyelitis: Staph A
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5
Q

In peril, a Class II furcation involvement means what? What is the Tx?

A

halfway through

Graft and Guided Tissue Regeration

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6
Q

In perio, a Class III furcation involvement means what? What is the appropriate Tx?

A

through and through

Hemisection, Extraction, or open flap curettage

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7
Q

what effect does intrusion have on peril pockets and furcations

A

Intrusion does not change furcation or pocket

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8
Q

what kind of defect has the best prognosis? how many walls?

A

3 walled

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9
Q

with 3 walled peril defects, you can get Pocket reduction with regenerative perio therapy. What therapy?

A

debridement, graft and Guided Tissue Regeneration

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10
Q

it is safe to initiate orthodontic treatment when peril has been stable for ___ - ___ months

A

3 - 6 mo

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11
Q

a 2 walled perio defect is aka

A

osseous crater / interdental crater

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12
Q

a 2 Walled perio defect is a concavity confined to ________ and _________ walls

A

facial and lingual

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13
Q

what is the appropriate treatment for a 2 walled perio defect?

A

osseous recontouring or resection

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14
Q

where are 1-2 Walled hemiseptal defects commonly found?

A

mesially tipped or supraerupted teeth.

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15
Q

can 1-2 wall hemiseptal perio defects be eliminated with orthodontic treatment?

A

YES, uprighting and eruption will level the bony defect

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16
Q

If bone level is flat between adjacent teeth and the marginal ridges are at different levels, correcting marginal ridge discrepancy will create a:

A

hemiseptal defect

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17
Q

which two systemic conditions put patients at an increased risk for periodontal disease?

A

uncontrolled diabetes

rheumatoid arthritis

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18
Q

A free Gingival Graft is performed ( pre / post )-ortho when less than ___mm of gingiva for cosmetic reasons post-ortho

A

pre - ortho

2mm

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19
Q

what is the appropriate/ideal gingival display upon smiling?

A

1-2mm

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20
Q

what are the potential causes of excessive gingival display?

A

VME

short upper lip

increased max eruption (altered active)

Delayed apical migration of gingival margin (altered passive)

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21
Q

Gingival margin should be ___mm coronal to CEJ

A

1mm

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22
Q

Biologic width, or the distance form bone to gingival sulcus should be ___mm

A

2mm

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23
Q

what Tx is appropriate for a vertical root fracture?

A

extraction

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24
Q

is a horizontal root fracture occurs, can you continue ortho?

A

yes

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25
Q

with gingival inflammation, there will be a greater breakdown of bone because of higher _______________ levels

A

prostaglandin levels

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26
Q

can ortho cause perio involvement?

A

yes

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27
Q

Frenectomy procedures should be done ( before / after ) space closure and
( before / after ) debonding

A

after space closure

before debond

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28
Q

Compared to 1960 the prevalence and severity of perio disease are both ( higher / lower )

A

higher

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29
Q

A ________________ fiberotomy severs gingival and transseptal fibers which run between two adjacent teeth in the same arch, and is used to reduce ____________ relapse

A

supracrestal

rotational

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30
Q

Contraindications to supracrestal fibrotomy Tx include: Poor OH, excessive ( lingual / labial ) root prominence, active Perio

A

labial

31
Q

Supracrestal fibrotomy Tx is more successful in (maxillary / mandibular ) teeth

A

maxillary

32
Q

Supracrestal fibrotomy Tx heals is ___ - ___ days

A

7-10 days

33
Q

which canine exposure technique preserves the attachment and mimics natural tooth eruption by allowing the canine to be brought down through attached gingiva

A

Closed eruption technique

34
Q

after extraction of a tooth, the maxillary ridge will 25% in ___ months and 33% in ___ years

A

6 mo

5 yrs

35
Q

gingival recession happens 68% of the time, mores in (maxillary / mandibular ) teeth and occurs ( symmetrically / asymmetrically )

A

mandibular

symmetrically

36
Q

When considering root proximity, ___ - ___mm of root separation will provide adequate bone and embrasure space for perio healing

A

2 - 3mm

37
Q

after band removal, the total amount of time needed for adequate bone remodeling, cessation of mobility and narrowing of the periodontal ligaments is:

A

6 months

38
Q

ankylosed teeth should be removed as soon as the alveolar height is changes because ankylosis has what effect on the development of the alveolar ridge?

A

arrested developemnt

39
Q

Which systemic antibiotic is least effective for perio disease?

A

Metronidazole

40
Q

the incisogingival position is determined by the position of the gingival margin. In some young patients, labial gingival level has not migrated to its adult level , so they either need _______________ or ______________ depending on bone level.

A

gingivectomy

osseous surgery (crown lengthening)

41
Q

black triangles can be addressed with:

A

IRP

ARS (air rotor stripping)

42
Q

black triangles are caused by:

A

crown shape, bone loss, root position

43
Q

improper root positioning ( can / cannot ) lead to reduced bone levels

A

can

44
Q

name 4 conditions/characteristics which can predispose someone to root resorption

A

hypothyroidism

previous RR

long, thin roots

long duration of Tx

45
Q

which type of fibers are most associated with relapse?

A

transseptal fibers

Profit says suprecrestal

46
Q

___ - ___% of children and ___ - ___ % of adults need pre-ortho perio

A

5-10%

20-25%

47
Q

___% of perio patients in ortho will see rapid progression

A

10%

48
Q

perio patients in ortho should have scaling ___x as often as normal

A

2x (twice)

49
Q

Bone breakdown is higher for perio patients because of higher prostaglandin levels which leads to increased ___________ activity

A

osteoclast

50
Q

_______________ is released during the breakdown of periodontal fibers

A

Interleukin - I

51
Q

T/F: ortho can be done concurrently or immediately after an specification procedure

A

True

52
Q

This procedure should be performed on a tooth with necrotic pulp and unfinished root tip formation

A

apexification

53
Q

What is a vital pulp therapy procedure performed to encourage continued physiological development and formation of the root end? performed to encourage the continuation of this process.

A

Apexogenesis

54
Q

with horizontal root fractures, a ___ year observation period is needed before initiation of orthodontic treatment

A

2 year

55
Q

If a tooth with a horizontal root fracture undergoes orthodontic Tx, the root fragment may separate, and/but there ( is / is not) worsening of prognosis of that tooth.

A

is NOT

56
Q

Orthodontic treatment for teeth with prior RCT ( do / do not ) have more root resorption than non-endo treated teeth

A

no NOT

57
Q

What is the diagnosis when a radiolucency inside the canal is observed? What should be done?

A

Internal RR

Immediate Endo

58
Q

The peak incidence of incisor trauma is at ___ - ___ years old

A

8 - 10 years old

59
Q

The ump ( does / does not ) have proprioceptors

A

does not

60
Q

If placing porcelain crown, the minimum overjet needed is ___ - ___mm to avoid additional tooth preparation on lingual surface

A

0.5-0.75mm

61
Q

If placing conventional porcelain bridge, the minimum overjet needed is ___ - ___mm to avoid additional preparation on the lingual surface

A

0.5-0.75mm

62
Q

T/F: If placing porcelain veneers, an edge-to-edge overate to allows sufficient space on labial for both temporary composite build up and eventual porcelain laminate

A

True

63
Q

if placing a bonded bridge, the appropriate overate and minimal OB is ___mm. Additionally, ______ incisor angulation permits better retention due to vertically oriented occlusal forces.

A

0.5mm

upright

64
Q

When veneering the U2-2, place the lateral ___/___ away from the central and ___/___ away from the canine

A

⅓ from central

⅔ from canine

65
Q

The width-to-length ratio of the centrals should be ___ - ___ %

A

65-75%

66
Q

The space needed for an implant restoration of a lateral incisor is roughly ___mm, ⅔ the width of the central

A

7mm

67
Q

When lateralizing canines (substitution), ST esthetics, the size and _____ of the canines, and the need for ____________ in the lower arch are more important factors than doing restorations on the centrals

A

shape

extractions

68
Q

You need ___ months of retention before restoration after extrusion is done.

A

6 months

69
Q

in the Gorlick foundation study, they found that ___% of patients have decalcification and that you should (prescribe / avoid ) fluoride

A

50%

avoid - allow the tooth to remineralize

70
Q

In the Guzman-Armstrong technique for treating calcification, the steps include:

  1. Allow natural remineralization for ___ months – no Fl-, it arrests remineralization and leads to staining
  2. _____________ to camouflage white spots, then do Fl- treatment
  3. acid _____________ (loses 250μm) followed be Recaldent or MI paste plus
  4. Restoration
A
  1. 6 months
  2. external bleach
  3. acid microabrasion
    1. restoration
71
Q

over the counter fluoride is 0.____%

A

0.05%

72
Q

the maxillary lateral is ____% of the size of central incisor

A

75%

73
Q

If the laterals are congenitally missing and you have Bs and Cs, what can be done?

A

extract Bs to encourage 3s to erupt into the lateral position

MODULE 3: CLINICAL SCIENCES “B” 65Q (7 decks)

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