Incision And Flap Design

Question 1

Which blade is most commonly used in oral surgery

Answer 1

Swann Morton no. 15 blade

Question 2

Which blade is curved

Answer 2

No. 12, used for perio surgery

Question 3

What blade is used for Hilton’s method

Answer 3

No. 11, used to drain abscesses

Question 4

How far from lower border of mandible should a cut at the neck be

Answer 4

At least 2cm away. Marginal mandibular nerve cross 2cm below lower border

Question 5

Length of incision should be at least __times tissues to be removed

Answer 5

3

Question 6

Does a longer or shorter incision take longer to heal?

Answer 6

Heal inn the same amount of time as healing happens across the wound

Question 7

Why is it important to keep blade perpendicular to surface during incision?

Answer 7

Wound edges less susceptible to necrosis

Easier to reorient and re oppose

Question 8

Incisions near teeth should be made in the

Answer 8

Gingival sulcus

Question 9

The base of flap should be ___ then apex

Answer 9

Broader

Question 10

Wound margins should rest on

Answer 10

Healthy bone

Question 11

Complications of raising flap

Answer 11

Flap necrosis
Dehiscence
Infection
Excessive trauma

Question 12

How to avoid flap necrosis

Answer 12

Base wider than apex
Sides should converge or be parallel at apex
Axial blood supply should be included in base of flap

Question 13

Why is it important to approaximate wound edges on healthy bone

Answer 13

Prevent dehiscence

Question 14

Why is suturing important

Answer 14

Approximate tissue with needle and thread

Approacimate wound edges to aid wound healing

Protect wound

Prevent infection

Decrease debris accumulation

Prevent post op bleeding because tamponade itself

Establish anatomy

Question 15

Is silk resorbable

Answer 15

No

Question 16

Is polyglactin 910 resorbable

Answer 16

Yes (aka vicryl)

Question 17

What kind of suture is vicryl

Answer 17

Multifilament, resorbable

Question 18

How long does vicryl take to resorb

Answer 18

6 weeks

Question 19

2 main characteristics of resorbable sutures

Answer 19

Tensile strength retention

Absorption rate

Question 20

What kind of suture used on skin

Answer 20

Monofilament sutures eg nylon and proline

Question 21

Which sutures lose tensile strength over time

Answer 21

Silk, nylon, linen

Question 22

What size suture most commonly used for mucosa

Answer 22

3/0 and 4/0

Question 23

Larger number + thicker or thinner suture

Answer 23

Thinner

Question 24

What size suture most commonly used for skin

Answer 24

5/0 and 6/0

Question 25

Benefits of monofilament versus braided

Answer 25

Monofilament has no capillary action, lower infection risk, smooth tissue passage

Question 26

How many knots does braided suture require versus monofilament

Answer 26

3 knots because increased knot security vs 5-6 knots for monofilament

Question 27

Where should you hold the needle at using needle holder

Answer 27

2/3 from point, 1/3 from staged area

Question 28

What size needle curvature used in oral surgery

Answer 28

3/8 circle (most common)

1/2 circle

Question 29

Forceps should grasp at the
A. Epidermis
B. Dermis
C. SKin

Answer 29

B, dermis

Question 30

Ideal suture distance from margin

Answer 30

1.5-2mm

Question 31

What happens if suture bite too deep

Answer 31

Constrict blood supply

Question 32

Benefit of mattress suture

Answer 32

Brings surfaces of wounds together (vs point). Contact between wider areas, better contact between wound margins —> better healing

Question 33

Suture must always pass through _______ first

Answer 33

Free flap

Question 34

Wound edges should be
A. Everted
B. Inverted

Answer 34

A

Question 35

How long to leave sutures in the face for

Answer 35

5-7 days