Incision And Flap Design Flashcards
Which blade is most commonly used in oral surgery
Swann Morton no. 15 blade
Which blade is curved
No. 12, used for perio surgery
What blade is used for Hilton’s method
No. 11, used to drain abscesses
How far from lower border of mandible should a cut at the neck be
At least 2cm away. Marginal mandibular nerve cross 2cm below lower border
Length of incision should be at least __times tissues to be removed
3
Does a longer or shorter incision take longer to heal?
Heal inn the same amount of time as healing happens across the wound
Why is it important to keep blade perpendicular to surface during incision?
Wound edges less susceptible to necrosis
Easier to reorient and re oppose
Incisions near teeth should be made in the
Gingival sulcus
The base of flap should be ___ then apex
Broader
Wound margins should rest on
Healthy bone
Complications of raising flap
Flap necrosis
Dehiscence
Infection
Excessive trauma
How to avoid flap necrosis
Base wider than apex
Sides should converge or be parallel at apex
Axial blood supply should be included in base of flap
Why is it important to approaximate wound edges on healthy bone
Prevent dehiscence
Why is suturing important
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
Is silk resorbable
No
Is polyglactin 910 resorbable
Yes (aka vicryl)
What kind of suture is vicryl
Multifilament, resorbable
How long does vicryl take to resorb
6 weeks
2 main characteristics of resorbable sutures
Tensile strength retention
Absorption rate
What kind of suture used on skin
Monofilament sutures eg nylon and proline
Which sutures lose tensile strength over time
Silk, nylon, linen
What size suture most commonly used for mucosa
3/0 and 4/0
Larger number + thicker or thinner suture
Thinner
What size suture most commonly used for skin
5/0 and 6/0
Benefits of monofilament versus braided
Monofilament has no capillary action, lower infection risk, smooth tissue passage
How many knots does braided suture require versus monofilament
3 knots because increased knot security vs 5-6 knots for monofilament
Where should you hold the needle at using needle holder
2/3 from point, 1/3 from staged area
What size needle curvature used in oral surgery
3/8 circle (most common)
1/2 circle
Forceps should grasp at the
A. Epidermis
B. Dermis
C. SKin
B, dermis
Ideal suture distance from margin
1.5-2mm
What happens if suture bite too deep
Constrict blood supply
Benefit of mattress suture
Brings surfaces of wounds together (vs point). Contact between wider areas, better contact between wound margins —> better healing
Suture must always pass through _______ first
Free flap
Wound edges should be
A. Everted
B. Inverted
A
How long to leave sutures in the face for
5-7 days
