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5th ICP - Implants > Implant Symposium > Flashcards

Implant Symposium Flashcards

1
Q

What is unusual about implants as a biomaterial?

A

Interface w/ both soft and mineralised tissue

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2
Q

How have implants evolved?

A

Pre 1990 placed in hospital/specialist centre

Majority now placed in dental practice

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3
Q

What has driven growth of implants?

A

Public demand - valid replacement which has become more popular

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4
Q

Adv of titanium?

A

Biocompatible
Durable
Low corrosion rate
Oseeoinegrating

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5
Q

Options managing missing teeth?

A

Accept gap
Denture
Bridge
Implant

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6
Q

Components of an implant?

A

Implant
Abutment
Crown

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7
Q

How does implant osseointegrate?

A

Surface changes due protein deposition
Inflammatory/ connective tissue cells onto implant surface
Adhesion osteogenic cells
Deposition bone onto implant surface

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8
Q

What does bioactive mean?

A

Interact w/ body to bring around desired response

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9
Q

Is titanium bioactive?

A

Not usually considered

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10
Q

What is hydroxyapatite considered as?

A

Bioactive - osseoconductive

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11
Q

Use of hydroxyapatite?

A

Calcium phosphate ceramic that encourage new bone tissue formation/healing following implantation

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12
Q

Why can calcium phosphate not be used for all implant?

A

Too brittle for load-bearing - used as coatings

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13
Q

How long for osseointergration implant?

A

3 months

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14
Q

Different ways crown of implant can be retained?

A

Cement

Screw

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15
Q

How to cement retained crowns work?

A

Cement lute sits around abutment

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16
Q

Risk of cement implants?

A

Contact w/ gingival tissue = induce inflammatory response = peri-implantitis

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17
Q

Adv of cement retained crowns?

A

Ideal aesthetics

18
Q

What is a screw retained implant?

A

Abutment integrated into crown - screw via crown

19
Q

Adv of screw retained crowns?

A

Less risk peri-implantitis

20
Q

Issue w/ screw retained crowns?

A

Aesthetics reduced

21
Q

Why can implants fail?

A

Failure osseointergrate

Peri-implantitis

22
Q

Different types implant retained bridges?

A

Multi-unit
Fixture level screw
Cement retained

23
Q

Different ways can combine dentures and implants?

A

Locator abutment
Ball attachments
Milled bars
Magnets

24
Q

Adv and disadv of locator abutment dentures?

A

Adv: stability, can be removed for OHI

Disadv: locator will wear and need replacing

25
Q

Adv of milled bars > locator abutment?

A

Better stability and retention

26
Q

Issue w/ milled bar retained dentures?

A

Need 4 implants in mandible (for locator can use 2)

27
Q

When can magnets be used in denture implant provision?

A

If lack OVD

Compensate poor angulation

28
Q

Two types of incisions done in implants?

A

Papilla sparing = sclar

Sulcual incision

29
Q

What is sclar incision?

A

Scar hiding at mucogingival junction

Cut along crest of gum w/ reliving incision sparing papilla

30
Q

Adv sclar incision?

A

Avoid papilla recession

31
Q

What is a sulcual incision

A

Crestall incsion involving papilla

32
Q

Adv sulucal incision?

A

Avoids scarring - lack relieving incision

33
Q

Disadv sulucal incisor?

A

Risk papilla recession

Risk gingival recession

34
Q

How chose flap design when providing implants?

A

Smile line

35
Q

What other factors need to consider when providing implants?

A

Width of implant - choice implant diameter affect abutment width

36
Q

What can be placed while allowing implant to heal?

A

Cover screw

Healing abutment

37
Q

When is a cover screw a good option?

A

Gingival covers over - good maximal healing/ diabetics

Will have to use healing abutment as second stand to allow impression

38
Q

When are healing abutments a good options?

A

Transmucosal - gingival heal as collar around abutment

39
Q

How does titanium implant differ to bulk material?

A

Surface is titanium oxide

40
Q

What properties make titanium good implant?

A

Low corrosion
Biocompatible
Passivating surface

41
Q

Example synthetic bone graft substitute?

A

Hydroxyapatite

42
Q

Most commonly used membrane GTR/GBR?

A

Collagen

5th ICP - Implants (7 decks)

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