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Implantology7

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robbypowell's version from 2017-05-02 16:24

Summary (material stressed by lecturers)

Question Answer
How long does it take for complete Soft tissue healing following extraction?4-8 wks post ext
How long does it take for complete Bone healing following extraction?16-20 wks post ext (4-5 months)
t/f: digital intraoral imaging w/ CCD/direct digital sensor Imparts lower rad dose than conventional film images and Can be used w/ various software for image analysisTrue
Which diagnostic task has least accuracy on CBCT... assessing peri-implant _____ tissue contoursoft
t/f: digital subtraction radiography Can be used to assess changes in bone densityTrue
t/f: digital subtraction radiography is Image analysis w/ 2 images at baseline and follow-up appt w/ same angulation and exposuretrue
t/f: with digital subtraction radiography Superimposition of 2 images is made possible by softwaretrue
_____ _____radiography is Image analysis w/ 2 images at baseline and follow-up appt w/ same angulation and exposureDigital Subtraction radiography
What is the 5 yr survival rate (of implants) in ant mand?95%
What is the 5 yr implant success rate?85 or lower
which radiographic technique causes 25-30% magnification?Pan
an object placed in Lingual position is projected ___ on panhigher
major diff btw tissues supporting teeth and implants is orientation of _____ fiberssupracrestal fibers
what is the preferred implant length in edentulous mandible?10mm
What is the minimum B-L ridge width for regular implant (4mm wide)6 mm (1 mm bone minimum + 4 mm implant + 1 mm bone minimum)
What is the ideal B-L ridge width for 4 mm implant?at least 8 mm (2 mm bone + 4 mm implant + 2 mm bone)
What is the minimum interdental (M-D between roots) distance for 4mm implant7mm minimum (1.5 mm M + 4 mm implant + 1.5 mm D)
What is the ideal interdental (M-D between roots) distance for 4mm implant8 mm ideal (2 mm M + 4 mm implant + 2 mm D)
The decision to use screw-retained v cement-retained depends on what?amount of interarch space available (you use screw retained when there is limited interarch space)
Following the uncovering (2nd stage) surgery, you will need what two parts for first restorative apt (impression)impression coping & lab analog
t/f: jaw bone shapes A & B would not require grafting for implant placementTrue (not sure if these are jaw bone shape classifications)
t/f: jaw bone shapes A & B would require grafting for implant placementFalse (would not) (not sure if these are jaw bone shape classifications)
the diagram shows implant drill penetrating what? (this is a bad thing)the lingual cortical plate of mand (apparently there will be a picture of this)
What changes in the implant neck characteristics can prevent marginal bone loss after implant placement?Platform switching (0.5 mm) (although old lectures say none)
Type 1 bone quality is most likely to occur in _____(anterior/posterior) ______ (maxilla/mandible)Anterior Mandible
Type 4 bone quality is most likely to occur in _____(anterior/posterior) ______ (maxilla/mandible)Posterior Maxilla
Soft tissue healing and maturation of an extraction site is mostly complete by _________-_________ weeks4-6 weeks (1-1.5 months)
Bone healing and maturation of an extraction site is mostly complete at weeks ___-___ weeks16-20 weeks (4-5 months)
t/f: Immediate implant placement can prevent buccal bone resorption of extraction socketFalse
t/f: Oral implants are a good tx option for patients whoare not compliant with recallfalse
t/f: Oral implants are a good tx option for patients who need extensive perio txfalse
t/f: Oral implants are a good tx option for pts with plaque and gingival index consistently highfalse
t/f: Primary stability is not associated with osseointegrationTrue
t/f: Primary stability is associated with osseointegrationFalse (it is not)
t/f: Primary stability is not associated with thickness of cortical boneFalse (it is)
t/f: Primary stability is not associated with size of osteotomyFalse (it is)
t/f: Primary stability is not associated with quality of alveolar boneFalse (it is)
t/f: Primary stability is associated with thickness of cortical boneTrue
t/f: Primary stability is associated with size of osteotomyTrue
t/f: Primary stability is associated with quality of alveolar boneTrue
Which surgical protocols (one-stage or two-stage) prevents any loading of the implant during the healing phaseTwo-stage
While drilling the osteotomy site for implant placement, care should be taken to have ample irrigation and to not exceed the critical temp of more than ____ deg C47 C
Secondary stability depends mostly on _______Osseointegration
The most common processes for increasing implant surface roughness are _____ (additive) & ______ (subtractive)electrochemical anodization (additive) & acid-etching (subtractive)
T/F: removable prosthesis, space maintenance / no tx, conventional fixed partial denture, & single tooth implants / implant FPD are all acceptable tx alternatives when considering edentulous spacestrue
t/f: periodont/endodontic condition of adjacent teeth, bone architecture at implant site, & bone quality at implant site are all dental limitations to implant placementTrue
t/f: there is no evidence showing that any paticular type of dental implant superior long-term success (so long as it has appropriate length, width, and is biocompatible)True
t/f: there is no evidence that implants w moderately rough surfaces have superior successfalse
Most oral implants commercially available are made of ______Titanium
Implant may not be able to be fully seated into implant site if _____ is underprepared or there is accumulation of ____osteotomy; debris
what diagnostic imaging method is sufficient to provide 3-d information while subjecting pt to relatively low rad dose to place multiple implantsCBCT
t/f: digital intraoral imaging w CCD/direct digital sensor can be used w various software for image analysis & imparts lower rad dose than conventional film imagesTrue
t/f: digital intraoral imaging w CCD/direct digital sensor image distortion is not as much a problem as in conventional film imaging & positioning of receptor for paralleling technique is easier than for conventional filmsFalse (on both counts)
oral implants with what surface characteristics are more favorable to osseointegrationModerately Rough
Which oral implant surface characteristics are less prone to biofilm accumulation?Smooth
The intraoral area w lowest implant survival rate is _____(anterior/posterior) ______ (maxilla/mandible)Posterior Maxilla
As a general rule, preferred length of implant in edent mand is ____ mm10 mm
Common strategies used to reduce the magnitude of lateral forces delivered to implants include ____ occlusal table, ____cusp angles, & ____ protected occlusionNarrow (occlusal table); Flat (cusp angles); & Mutually (protected occlusion)
Minimum B-L ridge widthe for regular implant (4 mm wide) should be ____ mm6 mm
Preferred occlusal scheme for posterior implants is MI/CR contact with _____ guidanceanterior
When dealing w occlusal forces for an implant restoration, _____ (increase/decrease) occlusal table & _____ (increase/decrease) cusp heightdecrease & decrease
Max ant implant should be placed _________-_________ mm apical to adjacent CEJs2-3 mm
Oral implants when evaluated after 10 years have _____ (greater, lesser, similar) longevity than compromised but successfully treated natural teethlesser
What is the best strategy to increase interarch space for implant placement?reshape alveolar ridge by alveoplasty
what is the Ideal M-D distance for 2 4mm implants?15 mm (2 + 4 + 3 + 4 + 2)
Implant placement is absolutely contraindicated in which of the following pts: 10 pack year h/o smoking, well-controlled DM, oral bisphosphonates, seasonal allergies or NONENONE (according to lecture... but bisphosphonates?! very suspicious here)
What is the sequence of Osseointegration? (between: bone matrix – woven bone – lamellar bone)bone matrix→ woven→ immature→ mature
When was the 1st Modern dental implant placed (titanium)?1965
How long has 1st implant been in patient's mouth?50 years
Implant is indicated in which situations?... External Root resorption, Internal root resorption, failed endo, perfed rootAll of the above
What is the shape of the graph that shows the relationship between Osseointegration (Y axis) and roughness of implant surface (X axis)Mountain (bell-curve style) (low OI for no roughness, high OI for moderate, low OI for very rough)
memorize

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