Final Studyguide Flashcards
Two implant mandibular complete denture is:
Implant retained
Implant success rate in a well-controlled DM:
85.5-100%
Modern root form success rate:
90-100%
Father of modern implants
Branmark
Blades & root form implants are:
endosteal
Roughened implant surface results in ____ to the implant surface
bone apposition
Collagen fibers to implant are oriented:
parallel
The biologic width of implants:
3 mm
T/F: BOP alone is adequate for diagnosis of peri-implantitis. BOP is a clinical sign of inflammation
S1: False
S2: True
What scans show a lingual undercut?
CBCT & Medical CT
Absolute contraindication for implants:
IV Bisphosophenates
D
B
Papilla height is dependent on:
bone level next to tooth side
What is the safe zone between implant & neuromuscular structures (mandibular canal, anterior loop, mental foramen, etc. )
2mm
An implant placed 4-8 weeks after extraction is type:
2
Difference in accuracy between open & closed tray impression techniques:
Open = more accurate
What is the minimum vertical space for screw retained?
4 mm
What is the minimal vertical space for cement retained?
7 mm
Minimum acrylic required:
2 mm
What type of cantilever is more favorable?
mesial = more favorable than distal
List factors important for cantilevers: (3)
- number, diameter, length position of implants
- MD length of cantilever
- Dimension on connector
Technical problem with tooth-implant supported FPD:
Natural tooth intrusion with telescopic crown
Complications with ICFPD:
a) screw loosening
b) veneer fracture
c) abutment screw fracture
d) implant fracture
All of the above
two implants of 3.5mm diameter, what is the distance between teeth?
13mm
Which has the shortest papilla height?
Implant-implant
Average CIR?
There isn’t one, it has no implication
T/F: Crown can be longer than implant:
True- because no CIR
Single maxillary anterior implant, soft tissue expected? You loose some buccal ST in the 1st year:
Think this is asking with a single maxillary implant where do you lose soft tissue??
Buccally
First thing found in socket immediately after extraction:
Blood clot
What contributes to socket preservation?
- atraumatic extraction
- Immediately placing graft to maintain volume of the soclet
Is bucal or palatal bone thicker in the maxilla?
Palatal
Measuring for locator selection from implant platform to:
Highest point of gingiva
Not a sign of peri-implantitis:
Thickening of mucosa
(what is a sign = Bone loss, inflammation, BOP)
What is the difference between vascularity in natural tooth vs. implant:
Natural tooth has more vascularity
How often should implant patient with pathology go?
6 months
Minimum space required between tooth and implant:
1.5 mm
Thickness of acrylic in over denture (even over the locator abutments)
2 mm
(on slides it said 2.5 mm)
Radiographic follow up protocol for normal implant patient:
1) Initial placement
2) 6 months
3) 12 months
4) every 2 years *** if no pathology present
According to some regulation which is true?
a) mandibular over denture requires 2 implants
b) mandibular over denture requires 4 implants
c) maxillary over denture requires 2 implants
a) mandibular over denture requires 2 implants
Screw retained vs. cement retained question
Cement:
- more permanent (can’t screw off like screw retained) also because of this if abutment becomes loose entire restoration is ruined
- hard to remove excess cement which can lead to peri-implantitis –> implant failure
- minimum vertical space 7mm
Screw retained
- provides retreivability
- less esthetic
- less strong
- minimum vertical space 4mm
impression coping remains on the implant during the impression making and removal of the set impression from the mouth; the coping is removed from the implant and then attached to the implant analogue
Closed tray impression technique
-less accurate
-used when teeth are parallel
-more accurate
-harder to perform
-used when teeth are not parallel
Open tray impression technique
T/F: A verification radiograph of the fully seat impression coping is typically done before taking the impression
True
What resorbs first after impression?
Bundle bone
T/F: Mose people have thinner buccal than lingual bone
True
can the gingival contour change due to the provisional crown?
Yes
T/F: CBCT exposes patient to LESS radiation than medical CT
True
T/F: CBCT is better for soft tissue imaging than medical CT
False
Medical CT –> Better for soft tissue imaging
What type of X-ray can you check magnification by placing a 5 mm bead?
Pano
If X-ray shows non-seating of impression coping what do you do?
Reposition & reseat until FULLY seated
All are true of tooth implant supported prosthesis except:
a) definite cementation (permanent; no screw retention or temp cement)
b) short span
c) stress breaking connectors
d) avoid telescopic crowns (no copings)
c) stress breaking connectors
CANNOT have stress breakers, need to be rigidly connected to tooth and implant
What is the biologic width around a tooth?
Sulcus: 1 mm
Epithelial: 1 mm
CT: 1 mm
Connection around the implant includes:
hemidesmosomes just epithelial
What is an implant analogue?
identical with special modifications to be in stone
Direct contact between living bone and implant seen on light microscope:
Osseointegration
Is the abutment smaller on the implant or on the switch?
on implant
_____ is smaller than implant on switch
abutment
Part used for making an implant impression:
impression coping
Amount of contact between crestal bone and contact:
5 mm
What is the minimal density scan?
DEXA
T/F: Oral bisphosphenates for less than 4 years do NOT have any impact
True
T/F: Ideal A1C in diabetics is less than 7% but can still place implants at 8%
True, True
Success of implant entails:
a) no pain
b) 0.1mm bone loss after more than 1 year
c) 1mm of bone loss after 1 year
d) all of the above
d
What is the best form of INTRAORAL X-ray technique?
parallel
Eposteal =
Subperiosteal
Transosteal =
Transmandibular
Platform switching results in:
less bone loss
Modern root form implants =
endosteal
What does roughening the implant surface result in?
Bone apposition to implant surface
Average length of biologic width in implants:
3 mm
(sulcus: 1 mm, epithelial: 1 mm, CT: 1 mm)
Immediate implant placement:
Type 1
Implant placement 12-16 weeks after extraction:
Type 3
Implant placement greater than 16 weeks post extraction:
Type 4
What type of cantilever is more favorable?
Mesial
Important for cantilevers:
a) diameter, length, number & position of implants
b) MD length of cantilever
c) dimension of connector
d) all of the above
D- all of above
Which has the LONGEST papilla height?
Tooth-pontic
What is socket preservation?
Immediately placing graft to maintain the VOLUME of the socket
Measuring for locator selection from implant platform to:
highest point of gingiva
minimum space required between tooth and implant:
1.5 mm
Thickness of acrylic in over dentures even over the locator abutments:
2 mm
(2.5 mm could also be right)
T/F: According to regulation, mandibular over denture needs two implants
True
T/F: You take an X-ray after placing impression coping
True
T/F: Most people have thinner buccal bone than lingual bone
True
Identical to implant with special modification to be in stone:
implant analogue
Amount of contact between crestal bone and contact:
5 mm
The lingual concavity is viewed on what form of radiograph?
Medical CT & CBCT
The following are parameters for:
-no pain
-1.0 mm bone loss first year
-0.1 mm bone loss following first year
Successful implant placement
