Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Week 77 > Flap Design > Flashcards

Flap Design Flashcards

1
Q

How do we classify flaps?

A
  • Bone exposure after flap reflection
  • Placement of the flap after surgery
  • Management of the papilla
    • Based on presence or absence of releasing incision
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Flap Classification: Based on the bone exposure after flap reflection

A
  • Full Thickness flap
    • all soft tissue is reflected to expose bone
      • including periosteum
  • Partial Thickness flap
    • only epithelium and splits CT
    • bone remains covered by CT and periosteum
  • Combination Flap
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Flap Classification: Based on flap placement after surgery

A
  • Nondisplaced flaps
    • flap is returned and sutured in original position
    • replaced or repositioned flaps
  • Displaced flaps
    • placed apically, coronally, or lateral to original position
    • ex: apical positioned flaps
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Principles of Flap Design

A
  • Apex should not be wider than the base
  • Releasing incisions should run:
    • parallel
    • convergent:
      • cover from the base of the flap to its apex (preferred)
  • Length:Base ratio
    • not greater than 2:1
  • Major blood supply is at base of the flap
    • travels apical to coronal direction
  • Axial Blood supply should be included in base of flap if possible
  • Incision made in adjacent area not operative site
  • Avoid major nerves and arteries
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the different types of horizontal incisions?

A
  • Internal bevel incision
  • Crevicular Incision
  • Interdental Incision
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Internal Bevel Incision

A
  • Aka Reverse Bevel Incision
    • internal bevel incision
  • 1st incision in reflection of a perio flap
  • Reverse bevel incision bc its reverse direction of gingivectomy incision
  • Starts at a distance from gingival margin
    • aimed at bone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the objectives of an internal bevel incision?

A
  • removes the pocket lining
  • conserves outer surface of gingiva
    • if apical→becomes attached gingiva
  • produces a sharp, thin flap margin for adaption to the bone-tooth Jxn
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Crevicular Incision

A
  • aka Sulcular Incision
  • made from the base of the pocket to bone
  • carried around entire tooth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Interdental Incision

A
  • aka marginal incision
  • 3rd incision
    • separate the collar of gingiva that is left around tooth
    • all the way around the tooth
  • use Orban Knife
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Vertical Incisions

A
  • Aka Oblique releasing incisions
  • used at one or both ends of horizontal incision
  • avoid in lingual and palatal areas
  • Always start from level of the line angle
    • never from the middle of the papilla or mid buccal/lingual
      • compromise vasculature
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Gingivectomy: Indications vs Contraindications

A
  • Indications:
    • eliminate
      • supra bony pockets
        • pocket wall is fibrous and firm
        • depth-doesn’t matter
      • gingival enlargements (mainly)
      • supra bony perio abscess
  • Contraindications:
    • need for bone surgery or examine bone shape and morphology
    • bottom of the pocket is apical to mucogingival Jxn
    • esthetics
      • anterior maxilla
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Gingivectomy: Advantages vs Disadvantages

A
  • Advantages:
    • simple
    • quick
  • Disadvantages:
    • post-op discomfort
    • increased chance of post-op bleeding
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Gingivectomy

A
  • removal of gingival tissue
  • reduce soft tissue wall of pocket
  • external bevel incision
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Gingivoplasty

A
  • reshape gingiva
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Ostectomy vs Osteoplasty

A
  • Ostectomy
    • remove supporting bone (direct contact w/tooth)
  • Osteoplasty
    • remove non-supporting bone
      • reshape
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Original Widman Flap

A
  • Goal:
    • remove pocket epithelium and inflamed CT
    • facilitate optimal clean of root surface
  • Steps:
    • use 2 vertical releasing incisions
    • connected by submarginal scalloped internal bevel incision
17
Q

What are the main advantages of Original Widman Flap vs Gingivectomy?

A
  • Less discomfort bc healing occurred by primary intention
  • Able to re-establish proper contour of alveolar bone with angular bony defects
18
Q

Modified Widman Flap

A
  • 3 incisions
    • marginal incision
      • 0.5-1mm from gingival margin
      • parallel to the long axis of tooth
    • crevicular incision
      • to the bone
    • interdental incision
      • perpendicular to root surface
19
Q

Modified Widman Flap: Main advantages compared to other techniques

A
  • close adaptation of soft tissue to the root
  • minimum trauma to bone and CT
  • less exposure of roots
    • esthetic for anteriors
20
Q

Needles: Bite size

A
  • Try to stay 3mm away from wound
  • to small=tear wound edges
21
Q

Suture Size

A
  • Varies from #7 to #12-0
  • Number alone
    • larger the number, larger the suture
  • Number -0:
    • larger the number, smaller the suture
  • usually use 3-0 to 5-0
22
Q

Suture Materials:

Made of?

Absorption time

A
  • Plain Gut
    • Beef serosa or Sheep Submucosa
    • 70 days
  • Chromic Gut
    • Beef Serosa or sheep submucosa
    • 90 days
  • Coated Vicryl
    • Polglactin 910
    • 56-70 days
  • PDS II
    • Polydioxanone
    • 183-238 days
23
Q

Healing After Flap Surgery: Full vs partial thickness flap

A
  • Repair of epithelium and CT is similar
  • Bone resorption
    • Full thickness-more intense
  • Time:
    • full=21 days
    • partial=28 days
24
Q

Papilla Preservation Flap

A
  • used in anterior regions due to esthetics
  • Cortellini
    • minimally invasive surgery combined with regenerative procedures
    • Modified Papilla Preservation Technique:
      • ≥ 2mm interdental space b/w teeth
    • Simplified Papilla Preservation Flap:
      • <2mm interdental space
25
Q

What was the rationale behind the Modified Papilla Preservation Technique?

A
  • Achieve and maintain primary closure f Flap in the interdental space over membrane
26
Q

Simplified Papilla Preservation Flap

A

Week 77 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions