robbypowell's version from 2017-03-26 23:23

intro (and history)

Question Answer
Who is responsible for development of “blade” implants?Leonard Linkow
Who was the first person to receive titanium implants for dental treatment? (patient)Gosta Larsson (in 1965)
Who is considered the father of modern titanium implants (with osseointegration)?Andre Schroeder
Who discovered osseointegration of titanium?Branemark (1952)
Titanium implants received approval for use by Sweden in ______ and was approved by the FDA in _____; Nobel implants were available in US by _____1978; 1982; 1986
____ million implants were sold in the US in 2010, ____ million in 2016; expected implant sales in 2019 are ____ million units1.9 (2010); 3.07 (2016); 4.13 (2019)
Two big advances for implants are improved _____ to increase integration & improved ______ for proper emergence profileSurface; design
t/f: survival of an implant is equivalent to successFalse
What is the success rate of implant placement?95% (apparently)

osseointegration (as it relates to materials and surface texture)

Question Answer
Osseointegration of an implant is defined how clinically?the stability and “ankilosis” of an dental implant in alveolar bone
From a Histological Standpoint, how is osseointegration of an implant defined?close contact between the dental implant and alveolar bone
From a Radiographic standpoint, how is osseointegration of an implant defined?absence of a radiolucent area around the dental implant
Preparation of bone for implant placement is referred to as ________Osteotomy
Implant must be slightly _______ the the hole prepared to achieve primary retentionlarger
(more/less) smear layer is ideal for implant placement?Less (must minimize)
It is important to keep the ________ low when doing osteotomy in order to avoid killing the surrounding tissuetemperature
After surgical trauma the tissue and bone surrounding the placed implant is placed under severe ____ stress, this allows for the formation of ____ and thus incorporation of _____ ionsOxidative stress, form of TiO2, incorp CaP ions (activates bone implant surface)
In order for osseointegration to be successful, we want to maximize the _____ layer around the implantOxide
t/f: bone debris inhibits osseointegrationtrue (surgical site must be cleaned thoroughly before implant placement)
t/f: bone compression leads to bone deathTrue
What is the weakest point between primary stability and secondary stability (time-wise)4 weeks
what are the two times that you can provisionals an implant?immediately (primary stability) or 8 weeks after placement (secondary stability)
Remodeling and Resorption decrease ______ stability but lead to _____ stabilityprimary; secondary
t/f: there is no evidence that any particular type of implant has superior long-term success (assuming they are all grade 4 Ti; 99% pure)True
Which is better for osseointegration… rough or smooth surface?Rough (TiO increases from 5 to 10k nm)
What is the most common additive method for implant surface roughness?Electrochemical Anodization (thickening of TiO2)
What is the most common subtractive method for producing roughness of implant surface?Acid-etching (hydrofluoric, nitric, sulfuric acids)
What is the greatest downside as you increase roughness of implant surface?bacterial plaque can better adhere (limited evidence that rough implants are more prone to peri-implantitis)
Moderate ______-______ increases osseointegration and improves clinical outcomes, but NO current evidence supports that changes in macro or nano level _______ provides better outcomes Micro-roughness; surface
_______ surfaces have shown superior molecular and cellular results than hydrophobic in vitro; but NO current evidence supports clinical outcome improvementHydrophilic
t/f: zirconia shows equal osseointegration to TitaniumTrue

bone formation timeline (matching)

Question Answer
1 weekBone matrix (not yet mineralized)
2 weeksWoven bone (some mineralization but very soft)
4 weeksImmature bone (remodeling of old bone and formation of new bone)
6-8 weeksmature bone

wound healing matching

Question Answer
Hourshemostasis/clot formation
Daysgranulation tissue/matrix formation
Weekstissue formation (repair/regeneration)
Monthstissue remodeling/maturation

Recent badges