Abutment Selection

Question 1

Custom abutments

Answer 1

Cast
Milled zirconia
Milled titanium

Question 2

Stock abutments

Answer 2

Solid
Prefabricated
Ti-bases

Question 3

Two piece abutment

Answer 3

TI- bases

Question 4

What type of implant restoration do most labs prefer and why

Answer 4

TI-bases
High strength - metal internal connection with the implant and the metal/titanium insert or base
Small dental lab to fabricate custom implant abutments without outsourcing the milling of the zirconia

Question 5

Screw retained

Answer 5

Into the implant
Into an abutment

Question 6

Screw retained - into the implant

Answer 6

Traditional
Screw access change (LTS)

Question 7

screw retained - into an abutment

Answer 7

Mesio structure
Horizontal screw

Question 8

Cement retained

Answer 8

Straight or angled
Prefab Ti, ZrO2
Customized Ti, ZrO2, Al2O3, LS2
Veneer LS2

Question 9

Crown-abutment complex retention

Answer 9

Screw retained
Cement retained
Cement screw retained

Question 10

Crown abutment complex material

Answer 10

PFM
ZrO2
LS2

Question 11

Abutment design

Answer 11

Metal structure must follow some anatomical form of the teeth to be restored
Need significant thickness of crown material

Question 12

Abutment for tissue level implants

Maintain at least __mm at the _______ region
Max ___ mm below gingival margin
___mm of polished collar

Answer 12

2
Cervical
2
1.8

Question 13

Pre diagnostic data

Answer 13

Med hx
Clinical evaluation
Radiographic evaluation
Diagnostic wax up
Tx plan presentation
Consult with surgeons

Question 14

Presurgical prep

Answer 14

Duplication of wax up
Thermoform fabrication
Radiographic marker placement
Delivery to surgeons

Question 15

One stage

Answer 15

No 2nd stage (uncover) required, but torque test must be performed prior to the implant impression

Question 16

Two stage

Answer 16

Uncovery of the implant must be performed prior to the torque test

Question 17

What must be done before an implant impression can be taken

Answer 17

Implant cases must be torque tested and given approval for final rest

Question 18

Screw retained advantages

Answer 18

Can be used with limited resorative space
Absence of cement under gingival tissue (periimplantitis)
Predictable retention
Retrievability

Question 19

Screw retained disadvantages

Answer 19

Screw access compromises of occlusal function
Esthetic of access hole

Question 20

cement retained advantages

Answer 20

Passive fit of the implant crown
Esthetics
Ideal occlusal form
Flexibility of fixture placement

Question 21

Cement retained disadvantages

Answer 21

Subgingival cement line
Cleaning of excess cement
Crown retention

Question 22

cement retained crown delivery steps

Answer 22

1. Check contact points
2. Verify radiographically
3. Check occlusion

Torque abutment, teflon tape and cavit in access hole

Question 23

Cement selection

Answer 23

Based on the retention of the crown within the abutments

Question 24

Screw retained crown delivery

Answer 24

1. Final torque abutment
2. Dry access hole very well
3. Pack form PTFE (teflon tape) leaving 2-3 mm space in the occlusal
4. Close access hole w/ packable composite
5. Check occlusion ,finished and polished