Burns Flashcards
Implant with the longest period of clinical trial
subperiosteal
Father of modern implantology
Per-Ingvar Branemark
4 keys to osseointegration
atraumatic surgery
1mm bone, B & L at crest
No micromovement
Adequate healing time
What temperature must not be exceeded during
implant site preparation to make the surgery atraumatic
and avoid bone necrosis
<47 deg C
If there is movement in the implant, what
integration will there be: fibro-osseous or
osseointegration
Fibro-osseous/unacceptable
5 Criteria for implant success
immobile
Less than 0.1mm bone loss annually (used to be
0.2mm/annually)
No pain, infection, neuropathies, paresthesia, or
IAN violation
No x ray evidence of peri-implant radiolucency
85% still in 10 yrs = success
)ITI-implant system titanium type and implant
placement
commercially pure titanium
Single stage transcended through gingival into oral
cavity
How is ITI different from Branemark
Branemark said implant should be two stage &
level with bone
Core-Vent implant system titanium type and
implant placement
titanium-6 aluminum-4 vandium alloy
2 stage
)How is Core-Vent different from Branemark
does not use commercially pure titanium
If pt needs ortho, should it be done before or after
implant placement
before. Implants don’t move
Integral-Calcitek implant system titanium type and
implant placement
hydroxyapatite coated bullet form
Tapped into hole
)With implant systems are the parts
interchangeable between systems
no
3 basic components of dental implant
Implant body
Abutment
Retaining screw
Titanium types/coating
(commercially pure) titanium Titanium alloy (Ti6Al4V) Titanium plasma sprayed (TPS) Hydroxyapatite coated (HA) Microtextured Combination (micro-textured and HA)
3 terms describing implant/bone interface
fibro-osseointegration
Osseointegration
Biointegreat
what is advantage of microtextured titanium
)uniform 1-2 micron surface roughness gives 44%
more surface area than mechanical titanium
Where is Type I bone found
anterior mandible
Where is Type 2 bone found
posterior mandible
Where is Type 3 bone found
anterior maxilla
Where is Type 4 bone found
posterior maxilla
Where do implants work better, maxilla or
mandible
mandible
Which bone type osseointegrates fastest even
though it has the lowest blood supply
Type 1
Why is Type 1 bone the best for implants
because majority of implant is in thick cortical
bone
Why is a tapered implant good to use in type 4
bone
it compresses that bone increasing the mechanical
retention
)Which place is most difficult for implant placement
and why
Posterior. Greatest force, least space, poorest
bone quality, anatomic structures (IAN, Max Sinus)
)natural tooth biomechanics dissipate lateral
occlusal forces how
by PDL
) Ideal implant biomechanics direct occlusal forces
how
along vertical axis of implant, dissipate periapically
Where are lateral occlusal forces concentrated in
an implant Where are lateral occlusal forces concentrated in
an implant
at crest of ridge on abutment screw
Failing vs Ailing implant
ailing still has some osseointegration
How far can a cantilever be placed
1.5 times the A-P spread
What does a cantilever do with forces
increases force at crest and on abutment screw
How do you place three or more implants in a row
offset to give a tripod effect
All torque is measured in
Newtom centimeters
What is the max angle on an angle abutment that
has been found to not significantly effect occlusal
loading
30 deg
What diameter should be chosen for the implant
largest diameter that leaves 1mm bone B & L and
allows for coronal anatomy
What is the problem with long implants
lot of heat generated at most apical portion
Longer implants have higher failure rate
What is the ideal implant length
11-13 mm
Maximum crown to implant ratio
1:1
What are 2 contraindications for a long implant in
posterior mandible
retromylohyoid line (thin) IAN
Minimum amount of space between edge of
implant and adjacent tooth
1.5 mm
Minimum amount of space between edges of
adjacent implants
3 mm
What type of occlusion is desirable on implants
light centric and no lateral contacts
