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Surgery material for implant and suture (Implant material type (titanium…
Surgery material for implant and suture
Implant material type
titanium grade 2:
most used implant
titanium grade 3-4:
similar, just change ratio
contain iron, less bio-compatible
titanium grade 1:
not used, too soft, low mechanical resistance
titanium grade 5:
toughness due to Al and vanadium
use for implant thread and walls
titanium create a oxide layer when contact to air or liquid, protect against bio-corrosion effect
Properties
Bio- chemical
non-toxic
neutral
can not be resorbed
non-carcinogenic
not be dilated or dissolved
Physical
corrosion resistance
--> homogenous layer to avoid corrosion
--> sterilization could affect this layer
Mechanical
transmit force from outside
Implant material
Design
(cylindrical)
Frictional
unthreaded surface covered by hydroxyapatite surface,
some contain hole to increase mechanical retention
Threaded
like screw, thread on surface to increase contact surface
time to accept implant ↓
Surface
--> rugosity and topographical factor
rough surface
--> most used
--> ↑ surface, ↓ time
by etching and blasting particle
hydroxyapatite surface
polished surface
--> for soft tissue
Osseointegration
functional connection btw bone and surface of load-carry implant without soft tissue
Bio-funcitionality
--> optimum shape to transmit force to smallest area of bone
Receptor bone status
--> no infection present
Bio-compatibility
--> chemically and biologically inactive
Time:
maxillary: 5-6 months
mandibular: 3-4 months
Handling
sweep the flap
prepare surface by drilling
incision
Suture material
Needle
straight
curved with triangular section
more dramatic but less strength to pass tissue
inversion type is most use (flat concave side edge)
Sutures
Size: the more 0, the smaller the diameter
surgery: 3/0, 4/0 /// in periodontics: 5/0
Classification
Non resorbable
natural: silk, linen, cotton
synthetic: polyester, polypropylene, polyglactin
Resorpable
natural: catgut
synthetic: polyclycolic acid, polyglactin (victyl)
Connection type
Internal
more aesthetic
better anti-rotation
gum seal, no bacteria
External
easier for prosthesis