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Intro to Implant Dentistry > Biology of dental implants > Flashcards

Biology of dental implants Flashcards

1
Q

In ____ PDL fibers attach from bone to root in multiple directions

A

Natural teeth

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2
Q

In natural teeth _____ acts as a shock absorber

A

periodontal ligament (PDL)

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3
Q

In natural teeth ______ fibers attach to the teeth

A

connective tissue

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4
Q

In dental implants there is direct bone to implant contact also known as:

A

osteointegration

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5
Q

What process occurs to sort of anchor the implant into the bone:

A

ankylosis

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6
Q

Describe peri-implant fibers:

A

Parallel cuff, oriented longitudinal

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7
Q

Previously called biologic width:

A

supracrestal tissue attachment

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8
Q

What is the measurement of the supracrestal tissue attachment (biologic width) in a natural tooth?

What components make up this measurement?

A

~2mm

JE + CT attachment

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9
Q

In implants, epithelial cells are attached via:

A

hemidesmosomes

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10
Q

In implants, ____ are attached by hemidesmosomes

A

epithelial cells

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11
Q

T/F: In implants, collagen fibers do not insert into the implant, but instead form a cuff around the implant

A

True

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12
Q

Although collagen fibers do not insert into the implant, they instead:

A

create a cuff around the implant

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13
Q

In an implant, the blood supply comes from:

A

terminal branches of large vessels from periosteum

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14
Q

In an implant is there more or less inflammatory response than in gingival tissues?

A

more

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15
Q

The blood supply to an implant contains fewer:

A

capillaries

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16
Q

Teeth vs. implants:

Attachment:

A

Teeth: basal lamina & hemidesmosomes

implants; basal lamina & hemidesmosomes

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17
Q

Teeth vs. implants:

Orientation of collagen fibers:

A

Teeth: perpendicaular

Implant: parallel

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18
Q

Teeth vs. implants:

Source of blood supply:

A

Teeth: Periosteum & PDL

Implants: Periosteum

19
Q

Teeth vs. implants:

Biologic width:

A

Teeth: ~2mm

Implants: ~3mm

20
Q

Depending on the implant design, the JE length ranges from:

A

1.3-1.8 mm

21
Q

Once the implant is uncovered, vertical bone loss of _____ can be seen apically to the new implant

A

1.5-2.0mm

22
Q

After one year of loading up to ______ mm of bone loss is considered biologic bone remodeling and WNL

A

2mm

23
Q

How do evaluate progressive bone loss with an implant?

A

Baseline X-ray

24
Q

What amount of bone loss is considered pathologic following implant placement?

A

greater than 2mm

25
Q

If you do not have a radiograph how might you determine if a pathologic process is occurring?

A

PD of greater than or equal to 6mm and BOP

26
Q

A pathologic condition occurring in the tissues around dental implants, characterized by inflammation in the peri-implant mucosa and progressive loss of supporting bone

A

Peri-implantitis

27
Q

What are the clinical signs of perimplantitis?

A
  1. inflammation
  2. BOP
  3. RBL
28
Q

How much bone mesio-distally is adequate between the teeth and implant:

A

1.5 mm

29
Q

How much bone MD is adequate for papilla in anterior teeth:

A

3-4 mm

30
Q

How much bone is adequate MD between two adjacent implants:

A

3mm

31
Q

Bucco-lingually there was a significant greater resorption when the ridge width was ____ in posterior teeth

A

less than 2mm

32
Q

It is recommended to place bone level implant:

A

subcrestally

33
Q

Concept of placing an abutment of a narrower diameter on the implant of a wider diameter to preserve alveolar bone levels at the crest of the dental implant:

A

platform switching

34
Q

In platform switching we put a _____ abutment on a _____ diameter implant to preserve alveolar bone levels

A

narrower; wider

35
Q

Why is platform switching a thing?

A

it reduces peri-implant bone resorption at the one crest

36
Q

shifts the inflammatory cell infiltrate inwards and away from the adjacent crystal bone:

A

platform switching

37
Q

Platform switching maintains the:

A

supracrestal attachment

38
Q

Platform switching increases the distance of ______ from crystal bone

A

implant-abutment junction

39
Q

Platform switching limits possible interface of bone with:

A

micro movements

40
Q

A micro gap with a two-part implant may be responsible for:

A

Bacterial accumulation & subsequent bone loss

41
Q

A microgap will ultimately lead to _____ which further explains the advantages of ____

A

marginal bone loss; platform switching

42
Q

Implants site with a band of ____ of keratinized tissues were shown to be more prone to brushing discomfort, plaque accumulation, and peri-implant soft tissue inflammation when compared to implant sites with ______ mm of keratinized tissue

A

less than 2mm; greater than 2mm

43
Q
A

Intro to Implant Dentistry (8 decks)

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