Suturing And Healing/Osseous Defects Flashcards

(49 cards)

1
Q

T/F: We use needles with an eye to thread the suture material.

A

False

Disposable, reverse cutting needle with press-fit suture

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2
Q

What is the preferred needle holder in perio suturing?

A

Castroviejo needle holders

More flexible

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3
Q

T/F: Silk sutures must be removed within ten days.

A

True

Will start to absorb food and cause a host response

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4
Q

What are the advantages and disadvantages of PTFE (polyester) as a suture?

A

Can be kept in the mouth for a long time

Expensive

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5
Q

How long does it take chromic gut to resorb?

Coated vicryl?

A

Chromic gut — 7-10 days (proteolytic enzymes)

Coated vicryl — 56-70 days (slow hydrolysis

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6
Q

Sutures should be entered into the more ___________ flap first, and should be placed at least ______ away from the edge of the flap.

A

Mobile; 2-3 mm

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7
Q

When might the figure 8 suture technique be used?

A

Mandibular molar area; keeps you from pointing the needle at the tongue

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8
Q

What is the advantage of the sling sutures?

A

Can suture multiple papillae with one suture

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9
Q

How do you tie a surgeons knot?

A

Wrap the long end around needle holder twice -> pull short end through -> wrap long end once in the opposite way -> pull short end through

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10
Q

What is a major disadvantage to using a periodontal dressing?

A

Can predispose to colonization underneath of dressing if left on too long

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11
Q

When would you use periodontal dressings?

A

Healing via secondary intention

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12
Q

T/F: You should cut the sutures as close as possible to the tissue in order to avoid pulling contaminated suture through the wound.

A

True

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13
Q

What are the three phases of post surgical healing?

A
  1. Inflammation (first few days)
  2. Granulation (7-10 days)
  3. Matrix formation and remodeling (several weeks)
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14
Q

__________ tissue replaces the blood clot in primary closure.

A

Granulation

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15
Q

How long does it take for epithelium to attach to the root during wound healing?

A

1 week

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16
Q

How long does it take for the wound to regain most of its original tensile strength?

A

2 months

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17
Q

What happens to the bone during healing after a full thickness flap?

A

Roughly 1mm of bone loss

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18
Q

T/F: There is more inflammation and granulation tissue with secondary intention.

A

True

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19
Q

Which growth factors are released from the blood clot that helps with healing?

A
  1. PDGF
  2. EGF
  3. TGF-beta
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20
Q

What factors are released by fibroblasts and macrophages that help with healing?

A
  1. TNF

2. IL-1beta

21
Q

How do we minimize bacterial colonization during healing?

A

Chlorohexidine rinse

22
Q

What type of attachment do you get after a gingivectomy?

A

Long junctional epithelium

No new PDL, bone, or cementum

23
Q

What type of attachment occurs after an apically positioned flap?

A

Long JE

No new bone, PDL, or cementum

24
Q

What type of attachment do you get after a modified Widman flap?

A

Long JE

Less bone resorption than an apically positioned flap

25
T/F: Healing by long junctional epithelium is considered regeneration.
False Long JE is repair because it does not replace PDL, bone, cementum
26
What are the steps of healing after surgery?
1. Debridement — inflammatory cells 2. Regeneration — parenchymal cells 3. Migration/Proliferation — parenchymal and CT cells 4. Synthesis of extracellular matrix proteins 5. Remodeling of connective tissue and parenchymal components 6. Increase in strength
27
What are three etiologies of alveolar bone loss?
1. Extension of gingival inflammation 2. Trauma from occlusion 3. Systemic disorder *must have plaque for all three
28
What is the best way to determine the type of bony defect?
Bone sounding
29
T/F: Patients with thin bone will often have horizontal bone loss rather than angular.
True
30
What is the multiple burst model of perio disease?
Loss of equilibrium between formation and resorption is episodic
31
What is buttressing bone formation?
Bone is trying to make up for bone loss and deposits bone in other areas
32
T/F: Buttressing bone is removed as part of perio surgery.
True
33
Which type of buttressing is seen when opening a flap for perio surgery?
Peripheral — occurs on the external surface (will trap plaque) Central is the other type that occurs within the jaw
34
Describe reverse architecture.
Interdental areas will lose bone before buccal-lingual areas This creates a reverse U shape around the teeth, rather than the normal U shape of bone in health
35
Which type of defect has the best prognosis for regeneration?
3 wall defect
36
What are the classifications for Furcation loss?
F1 — feel concavity but not catching prob F2 — Furcation catches prob F3 — through and through
37
T/F: Furcation involvement can be diagnosed with just X-rays.
False Must have clinical exam
38
T/F: Regeneration surgery works for class III furcation.
False Just resective
39
T/F: Class II furcations are good for regeneration.
True
40
What are the main goals in treating horizontal bone loss?
Pocket reduction, and correct reverse architecture
41
If you have a patient with horizontal bone loss and limited keratinized tissue what would be the best surgery?
Open flap debridement OS — needed if reverse architecture needs corrected GV — not indicated due to limited keratinized tissue
42
What are the goals in treating angular defects?
Pocket reduction and restore attachment
43
What are the treatment options for angular defects?
OS — especially for less walled defects GTR — works best with 3 walled defects
44
What are the treatment options for furcation defects?
1. SRP — F1 2. OFD — F1-2 3. OS — F3 4. GTR — F2
45
What is the flap design for Osseous surgery?
Full thickness flap, apically positioned
46
What is the flap design for regenerative surgery?
Full thickness flap, coronally positioned flap
47
T/F: Scalloped incisions are mostly used during Osseous surgery.
True Sulcular if keratinized tissue is limited
48
T/F: Scalloped incisions are used with regenerative surgery.
False Sulcular
49
Why might vertical incisions be needed?
In order to make the flap more mobile