Manual 2 Flashcards
)If doing a two-stage implant, how long after
uncovering should you wait before final restoration of
the implant
6 weeks
Can implant placement and bone grafting be done
at the same time
Yes, if there is primary stability and minimal
grafting required
What is required for primary stability to place an
implant immediately after extraction
must engage 5 mm or more bone, either apically
or horizontally
What is the critical space in the extraction
socket
distance between implant platform and edges of
extraction socket. Should be <2mm
Which is usually a better candidate for immediate
implant placement after extraction: anterior or
posterior
Anterior teeth because diameter of implant is
close to CEJ diameter of extracted tooth
Why are posterior extractions not a good
candidate for immediate implant placement
posterior teeth have wider diameter than implant
so socket exceeds critical space of <2mm
)Implants are most often made of
Titanium
) The rough surface of implants is
desirable for improved osseointegration
Osseointegration means
40%-70% bone/implant contact
First even leading to osseointegration that occurs
after implant placement is
)formation of a blood clot
Excessive force on implant crowns results in
fatigue of implant components, leading to fracture
) Preload is
tension placed by screws to protect implant
components from displacing forces
Plaque and calculus
accumulate on implants similarly to teeth
Connective tissue fibers around the implant neck
are
parallel to implant surface
Peri-implantitis
spreads rapidly to bone
Implant survival
means implant still present in mouth after a
period of time
Minimum interarch space for a fixed implantsupported
prosthesis
7 mm
Ridge mapping measures
soft tissue thickness clinically to deduce bone
width
Panoramic radiographs are useful for
ruling out bony pathologies and estimating bone
availability
Computed tomography
most precise radiographic technique
Cone beam computed tomography
uses less radiation than conventional computed
tomography
Hounsfield numbers are
arbitrary numbers set for tissue density on
computed tomographs
Radiographic templates are
used to visualize diagnostic teeth
A scannographic template is
aide to visualized diagnostic teeth on a computed
tomography image
Which bone is the densest: D1 or D4
D1
What amount of bone is required buccal and
lingual when selecting and implant
1 mm bone buccal and lingual of implant
What is an advantage of screw-retained
prostheses
ease of retrieval
What is an advantage of cemented
prostheses
ease of fabrication
)Should connecting implants and teeth be avoided
at all costs, or avoided but can be performed(
should be avoided whenever possible, but can be
performed with careful consideration
Distal cantilevers should be avoided whenever
possible, but if must be used, they should be limited to
what type of span
short spans
Immediate implant placement is
placement of an implant at the time of tooth
extraction
Immediate loading is
placement of a restoration at the time of implant
placement
Should provisional restorations rest on bone grafts
or newly placed implants
no
Bone grafting works best to augment ridge height
or ridge width
Ridge width
) Gingival grafts should be performed prior to
fabricating final restoration or after the final restoration
is delivered
prior to fabricating final restoration
