Flashcards in Tamer Al-Sprinty Q1 Implants Deck (95):
3 Major groups of Dental Implant:
Sub-periosteal implants are large and made of Chrome Cobalt, which causes ____ and leads to infection
Endosteal Mx, Mn, and ____ Blades
don't use Endosteal Ramus Blade anymore. They fail and take up a good section of the Ramus
Epithelial migration caused infections on older, larger implants
Transosteal implant is a ________, and we no longer use it
Through and Through
Osseointigration was discovered by Branemark in the 60's with what material?
Pure titanium is a little weak, so now we use Titanium alloy
Ceramics are the newest implant, used in Europe
3 Forms of Titanium alloy used in implant dentistry:
Which is most common?
Alpha-Beta (most common)
Direct structural/functional contact between living bone and surface of a load-carrying implant
Titanium is resistant to ________
Spontaneously forms coating of ________
This is inert and promotes bone formation on its
Gap between implant and bone can't be too large or too small
Don't overheat the implant site when drilling over ____ degrees C
There should be no micro motion of the implant
there should be no contamination of the implant
There should be ____mm of healthy bone Buccal/Lingual to the implant
If the Implant is mobile, a ____ encapsulation has formed instead of osseointigration
Peri-Implant radiolucency can be caused by what 3 things?
Burn-out at tip (too hot) - no irrigation
Dense bone - burnout
If there is a mean Marginal Bone Loss of greater than _________ after 3 years, there was a problem with the implant
Short implants have a higher failure rate
Type I bone
Type IV bone
2 reasons Anterior Mn is good for implants:
Cortical Bone thick
Trabecular bone dense
Maxillary implants are less effective in the Posterior Maxilla for what 2 reasons?
Cortical Bone thin
Trabecular Bone diffuse
Contraindications for Implants: Pregnancy, uncontrolled ______, radiation, unrealistic _________
The Healing Phase of Implants differs according to what?
If pt is old, ad dexterity, lean toward removables
Machined surface Implants take ____ months for Osseointigration
2 Early Improvements on Machining Titanium:
Sand Blasted: contaminants
Plasma Spray: Giant cells/ macrophage reactive
Rough surfaces create better initial Anchorage
Accelerates biologic events leading to Osseointigration
3 Examples of Surfaces available now on Implants:
Double acid Etched
High Crystalline _________ as a coating is best available implant surface today
But there is also a ______ Metal that has proved highly effective
Trabecular Metal is made from __________
What measures Surface Osseointigration?
Bone Appositional Index
Bone Appositional Index is greater with rough surfaces
HydroxyApatite coatings is more bioreactive and leads to more rapid...
At 6 weeks Appositional Index is close to ____% for HydroxyApatite implants
___% for original titanium surfaces
Hydroxyapatite has more _____ than titanium coated controls
Machined Ti success rate:
HA-coated Ti success rate:
Can't graft height in the Posterior Mn
Implants should be at least ___mm in length
___mm in diameter
Short and wide diameter implants are susceptible to overload due to unvaforable
2 strategies used to eliminate Cantilever Effects:
Small diameter Implants can become loose or...
If there is less than 1mm of bone Buccal/Lingual to an implant...
What system is Pure Titanium?
What is stronger?
Off axialed loading should be avoided most especially where?
2 reasons why?
increased forces, poor bone quality
Off axis loading of singe unit implant restorations increase stress where?
Vertical loading produces the lowest _____ to supporting bone
implant/cortical bone interface
Where does off-axis loading increase stress in the Implant?
Where in the mouth should Implants be placed axial to occlusal loads?
Anterior can be off axis b/c forces used are _____ of those used posteriorly
Implant overload is rarely seen in the Anterior
Short and angled implants have high failure rates
Bone loss around Implants can be caused by what?
Infection, overheating bone, Cantilever, occlusal forces, off axis, implant type (too small), type of bone, crown:implant ratio off
It is preferable to Splint Implants in the Posterior - only do this if...
Central contact of the Implant should be around the Axis Hole
If Implant is less than ___mm you should put 1 implant/tooth
If Implants are more than ___mm you can do 2 Implants to replace 3 teeth
2 Types of Cantilevers:
What type of connection is preferred?
If the Occlusal Table is excessively wide, what type of cantiliever is created?
Avoid B/L Cantilevers by doing what?
Narrowing B/L occlusal table in Posterior Teeth
3 cases in which Cantilever is ok:
Mx LI *implant either in Central or Canine)
Mn Central *implant in Lateral
Complete Edentulous *Posterior
When in doubt, always add the 3rd Implat
2 Occlusal Factors to control to avoid Implant Overload
Occlusal table width
You should avoid the use of Implants less than __mm
External Connections are susceptible to what?
Lateral forces tipping crown
What design eliminated rotational tipping and micro-movement of crowns on implants?
Internal Hex connection
Splinting has better distribution of forces and improved anti_______ features
2 reasons to not Splint in the anterior:
Splint the Anterior if you are working in ______
Why don't we Splint to Natural Dentition?
Splinting to natural dentition causes what?
Eliminate what contacts on Posterior restorations?
Anterior implant restorations can share some _____
Can do Implant on smokers, but there is a higher failure rate
Pt must be available for ___weeks after Implant placement b/c _____
If pt is Edentulous, what might not provide enough support?
what do we need for the support?
Fixed complete denture
Overdenture (has the flanges)
The more bone loss you have, the more options you have for the implant/denture set-up for Edentulous pts
Edentulous: less than 10mm to gingiva, use...
locator implant, overdenture, fixed detachable
Implants have longer crowns
In the fully edentulous, a high smile line might indicate what?
*avoids display of prosthetic border
Most commonly a smile reveals how far posteriorly?
2nd most common?
equal between 1PM and 1M
Ideally there should be ___mm of keratinized mucosa around implants
Thin scalloped gingiva does better with what?
PFM requires how much interarch space in the Posterior?
Fixed complete (hybrid)?
Anterior Single Crown: space btwn opposing tooth and implant abutment should be a minimum of...
A minimum of 1mm of B/L sides of implant will avoid _________
M/D implant to tooth distance:
Inter-Implant minimum distance:
Keep the Implant at least ___mm away from the Mental Foramen
Mn arch implants are usually placed anterior to what?
The Inter-Foraminal distance on the Mn should be wide enough to place how many implants?
If you're using _______ instead of Wax, you don't have to re-cast
The emergence profile of the Surgical Stent should be ____mm under the gingiva
What is GP for on the surgical guide?
What is sent to Belgium?
Implant is place ___mm deep of the Surgical Guide