W Ch 40 Flashcards
Strand of material used to control bleeding, stabilize wound edges in proper position, protect wound, and aid in pt comfort
Suture
Ideal suture has adequate _____ strength
This strength is the amount of strength the material will ___ _____ ____
Wound gains strength and suture loses strength
Tensile
Retain throughout healing
Functions of sutures (6)
Close periodontal wounds and secure grafts
Maintain hemostasis (end bleeding)
Reduce posttx discomfort
Promote primary intention healing
Prevent bone exposure
Protect wound from debris and trauma
Characteristics: (science class vs PE)
Biologic
Physical
Bio:
Sterile
Reabsorption
Minimal inflammatory reaction in tissue
Physical:
Tensile strength
Flexible
Plasticity (maintain shape)
Elasticity
Maneuver
Fluent through tissue w min trauma
Length and diameter
What material type?
Animal origin- catgut and silk
Vegetal origin- cotton and linen
Vs
Developed to reduce tissue reactions and unpredictable absorption
Natural
Synthetic
Natural absorbable: (absorbed in…)
Monofilamentous, derived from purified collagen of sheep/cattle and lasts about 8 days before degrading
Chromatic salts to delay enzyme resorption for 18 days
Plain gut
Chromic gut
Synthetic resorbable sutures: (hydrolysis breakdown)
All these types begin with prefix
Poly
(Water makes you P!… Poly)
If suture is non absorbable pt returns removal after
1 week
Non absorbable
Natural (1)
Synthetic (5)
Silk - can cause inflammation
-Nylon
-All the polys (polyester, polypropylene, polytetrafluoroethylene
-Coated sutures (antibacterial agents)
Number of strands :
-Typical of gut, nylon, PYFE and other synthetic sutures
-Typical of silk, nylon, polyglycolic, polyester, and other synthetics
Monofilament
Multifilament
Most suture types used for perio flaps and closure?
What is used for extraction socket, bone grafting, free gingival grafting?
What is preferred for implant flap closure? If swelling and pain anticipated?
Gut, absorbable
Absorbable
Non absorbable
Allows suture material and needle to act as one unit
Swayed end (eyeless)
What is weakest part of body of swaged needle?
Swaged end
Extends from tip to widest part of needle
Point
2 opposing cutting edges for difficult to penetrate tissue like skin
Sharpest
Reverse
3rd cutting edge on concave curve of needle
Conventional
Most frequently used knot in dentistry
Easiest and most reliable
Square knot