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D2: Implantology > Manual > Flashcards

Manual Flashcards

1
Q

implant component that lies between the implant

and the crown

A

Abutment

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2
Q

Screw that clamps the abutment onto the implant

A

Abutment Screw

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3
Q

flat small implants that are inserted into a cut in the

bone

A

Blade implants

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4
Q

software associated radiographic technique that
produces an exact cross-sectional view of the mandible
or maxilla

A

Computed tomography (CT)

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5
Q

CT scanner that uses a cone-shaped radiographic
source and a large detector to produce a 3-D
radiographic image(

A

Cone Beam Computed tomorgraphy (CBCT)

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6
Q

) screw that blocks the implant entrance during the

healing period after surgery

A

Cover screw

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7
Q

Distance between the implant platform and the
edges of the extraction socket. Used as a reference for
feasibility of immediate implant placement

A

Critical Space

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8
Q

) subgingival change in shape of the abutment and/or
the crown, between the implant platform and its
emergence from gingival tissues

A

Emergence profile

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9
Q

implant-to-abutment attachment that sits on top of
the implant platform. Common shape is external
hexagon.

A

External Connection

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10
Q

temporary abutment that is used in place of a cover
screw after an implant has been inserted and removed
before the restoration is placed

A

Healing abutment

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11
Q

arbitrary scale of values assigned to various
radiopaque densities when using computed
tomography.

A

Hounsfield numbers

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12
Q

technique in which implants are restored/loaded at

the time of implant placement

A

immediate loading

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13
Q

) titanium device placed in bone that replaces the
root of a tooth and enables the attachment of a
prosthesis

A

Implant

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14
Q

implant-to-abutment attachment placed inside the

implant body, found in internal friction systems.

A

) Internal connection

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15
Q

system where abutments are retained by friction

against the inner walls of the implant.

A

Internal friction system

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16
Q

) Irreversible microscopic changes in the metal of
implants and components when an excessive force
applied; often leads to fracture

A

) Mechanical fatigue

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17
Q

Implants that are exposed to oral cavity on day of

placement

A

One Stage Implants

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18
Q

attachment of bone to the surface of an implant.

A

Osseointegration

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19
Q

elevation of the sinus floor via the osteotomy prior

to implant placement

A

Osteotome technique

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20
Q

progressive bone loss and inflammatory tissue
pathology that results from plaque accumulation and
bacterial infiltration around implants

A

Peri-implantitis

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21
Q

)reversible condition characterized by gingival
inflammation around implants without evidence of
bone resorption

A

Mucositis

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22
Q

Flat, mesh-like implants that lie on the osseous

surface

A

Periosteal implants

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23
Q

clinical procedure in which soft tissue is measured
at several locations of an edentulous ridge in order to
estimate the width of underlying bone architecture

A

Ridge mapping

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24
Q

Cylinder or screw-shaped implants. Most common

implants used today

A

Root form implants

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25
acrylic appliance used during surgery that indicates where the ideal implant placements must be for restorative purposes.
) Surgical guide
26
) lightweight, soft, noncorroding metal used to make | implants
Titanium
27
) Implants that are covered by the gingival immediately after placement. Second surgery is necessary to uncover them. -
Two-stage implants
28
) Implants are replacements for what
Tooth roots
29
What does titanium do when exposed to oxygen | and its purpose
forms titanium dioxide ( natural ceramic coating) | enables bone cells to attach
30
Bone cells react better to titanium surfaces that are | rough or smooth ?
rough
31
3 ways to roughen titanium surface of implants
Mechanical (blasting) Chemical (acids) Combo mechanical/chemical
32
) Is roughening done the entire length of the implant | and why
No. Near implant head left smooth to decrease | bacterial attachment
33
Another method to enhance bone healing
hydroxyapatite coating
34
2 reasons for thread shape and pitch on the implant
transfer biting force to surrounding bone | Enhance placement and stability
35
)Is osseointegration a clinical or histological | observation.
histological
36
Is the osseointegration of the implant and bone | continuous along the implant
not continuous. Only 40-50% implant surface in | contact with bone
37
When does osseointegration begin
at time of implant placement
38
What forms between the bone and the implant w/in | the first few minutes of implant placement
) blood clot
39
What attaches to the implant after the surgical trauma has caused surface bone cells to die and inflammation to take place
fibrous mesh attaches
40
) Sequence of events leading to osseointegration and | their time frame
Necrosis – time of placement Inflammation – within Days Osteoid Matrix formation – 2-3 wks Maturation – 6 -12 wks
41
Does osseointegration stop after 6-12 weeks or | continue for the life of the implant
matures for life of implant
42
)Does the implant surface undergo changes as does | the bone around it
Yes, the ceramic oxide layer thickens over time
43
Do all implant types require abutments
No, some have the crown screw directly into the | implant
44
) With external connection root form implants, how | high does the attachment rise above the implant
Approximately 1 mm
45
Can two stage implants be exposed to the oral environment on the day of placement like a one stage implant
yes, but covered with a healing abutment
46
)in blade implants and periosteal implants (mesh like frame that overlays buccal-lingual), is the abutment separate of inseparable from the implant itself
inseparable
47
Where is force predominantly dissipated in the | implant
at the neck
48
What is the benefit of an implant with respect to | bone
constant remodeling around implant preserves | bone volume
49
clampinf force that the screw applies between the | two parts of the implant
preload
50
term refers to implants that are still in the mouth at the time of examination, regardless of the state of the prosthesis or patient satisfaction
Survival
51
term refers to implants that are not only in the | mouth, but are also functional and satisfactory
success
52
What is more frequent with smoking and implant
peri-implantitis more frequent
53
What type of diabetes contraindicates implant | placement
uncontrolled
54
What should be considered with implant placement in a controlled diabetic at time of implant placement
antibiotic therapy
55
Does osteoporosis appear to influence implant | success rates
No
56
With respect to age, what should be considered for | implant treatment planning
if pt is young, have they completed growing
57
How will an implant act in a person still | growing
like an ankylosed tooth
58
Why are implants good for a person who has | undergone head and neck radiation
if xerostomic, pt’s mucosa does not react well to removable prosthesis, so implants avoid the mucosal pressure
59
Necessary interarch distance in the posterior required to build a fixed implant-supported prosthesis
7 mm
60
Necessary interarch distance in the anterior required to build a fixed implant-supported prosthesis(
8-10 mm
61
)Total distance between adjacent teeth required for | single-tooth implants
7mm from CEJ to CEJ
62
) Manual formula for determining 7 mm bone requirement between adjacent teeth in single-tooth implant
1 mm bone M & D, PDL is 0.5mm, 4 mm diameter implant 4mm + (2 x 1mm) + (2 x 0.5mm) = 7mm
63
Amount of bone is required buccal and lingual for | implant
1mm B, 1 mm L | 4 mm impant + 1mm B + 1 mm L = 6 mm bone width
64
Where is bone usually narrower, at the crest or the | base, and which is most critical
narrower at crest, crestal bone width is most | critical
65
What Periapical radiograph technique best | minimizes distortion
parallel technique
66
Panoramic radiographs utilized for what
estimate bone quality Estimate bone quantity Presence of anatomic limitation (e.g IAN, sinus)
67
What is prevalent on a panoramic
distortion
68
If doing an overlay on a distorted panoramic, should you round up to the next ratio overlay or round down(
round up, allows for a more conservative plan
69
Hounsfeld numbers used in CT for water, trabecular | bone, cortical bone
water = 0 Trabecular bone = 200 Cortical bone = 1000
70
)Hounsfeld numbers are an indication of …
Bone density
71
)What is the main shortcoming of Conebeam CT
``` bone density (Hounsfield units) is not as reliable as conventional CT ```
72
acrylic appliance worn by the patient that is used to visualize diagnostic teeh or markers on a radiograph, and that can be modified to a surgical guide
radiographic template
73
)radiographic template utilized for computed tomography called _________ and what is the acrylic mixed with to be radiopaque
scannographic template | Barium sulfate
74
Bone quality Class I/D1
) Compact/ thick cortical bone
75
Bone quality Class II/D2
thick cortical bone surrounds trabecular bone
76
Bone quality Class III/D3
)thin cortical bone surrounds highly trabecular bone
77
Bone quality Class IV/D4
thin cortical bone and spongy core
78
What is the only way to get a subjective analysis of | bone quality
CT scan via Hounsfield units
79
Is bone quality directly correlated to implant | success
not directly, but does play a role
80
``` which bone quality class is hardest to prep surgically due to poor blood supply ```
C1/D1
81
``` ) which bone quality class has been associated with higher implant loss ```
CIV/D4
82
System for classifying bone volume
A to D. A is most intact edentulous architecture and | D is most atrophic
83
What guides implant length selection
``` bone availability (measure from crest to vital structure) ```
84
)For posterior mandibular osteotomy, how far is it | recommended to stay away from IAN
2 mm
85
What is the distance required between the edges of | 2 adjacent implants
3mm
86
What is the distance required between the edge of | an implant and the adjacent tooth
1.5 mm
87
)For posterior teeth implants, where should the long | axis emerge through
center of occlusal surface
88
) For anterior teeth implants, where should the long | axis emerge through
cinguli
89
)What must be completed before implant treatment | planning begins
) initial disease control phase
90
)Should implants be connected to natural teeth
It should be avoided
91
If a cantilever is to be used, should it be used for | short or long spans
Short spans
92
How far should the cantilever extend distally
no further than 1.5 distal to the A-P Spread
93
What is the A-P Spread
the mesiodistal distance between the most forward and the most posterior implant Or: something reporters put on their toast.
94
If a narrow arch decreases the number of implants anterior, thereby decreasing the overall A-P spread, should a cantilever be considered, or is a removable appliance indicated
removable appliance indicated
95
If considering a splinted implant for a removable prosthesis, what is the consideration and space required
splint requires more material. Require +12mm
96
When is bone grafting necessary
when bone width or height is inadequate for | receiving an implant
97
Which is more successful width or height bone | augmentation
width augmentation
98
Maximum amount of bone height that can be | gained with bone graft
2mm
99
Bone graft origins
autogenous (self: hip, chin) Allografts (freeze dried bone) Xenografts (bovine origin) Biomaterials
100
What is the ideal waiting period after tooth | extraction before implant placement
8 weeks

D2: Implantology (9 decks)

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