Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CSA periodontology > CSA restorations and periodontal health > Flashcards

CSA restorations and periodontal health Flashcards

1
Q

What is Biological width

A

natural distance between base of gingival sulcus & height of alveolar bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why do we have periodontal problems when we are doing restorative dentistry?

A
  1. plaque accumulation

2. Food impaction into periodontal tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How does plaque accumulation occur?

A

a. Shape of restoration/ overhangs at margins
b. Deficiencies/ voids formed within restoration
c. Roughness of restorative surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is food impaction into perio. tissues?

A

a. Poor/ no contact point
b. Incorrect 3D contour of supragingival bulge in restoration
c. Overbuilt or under-built embrasures (spillways)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the importance of tooth shape ?

A
  • shape of tooth prevent food impaction on gingival tissue
  • shape of crown protect gingival tissue
  • shape of contact point & embrasure protect soft tissues
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What to check with patient ?

A

• Will tissue permit us to carry out any restorative procedures? Direct sight, probing examinations
o If tissue isn’t healthy margins wont seal properly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why do we get plaque retention ?

A

Crowns/amalgams/composite not made properly

• Big overhangs leave area patient can’t clean properly so ging. tis. inflamed//bleeding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do we keep perio health to a good standard ?

A
  • making restorations of good quality
  • Telling patient to clean efficiently and where
  • whether area will be kept clean after placement is where we place margin
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Where can we place restoration for good aesthetics?

A

place a margin into sulcus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are iatrogenic factors ?

A
  • Tooth tissue loss may affect vital supporting structures of both hard & soft tissue
  • matrix band can> when packing amalgam, material squeeze out and become a PRF> perio disease
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is Biological integration ?

A

When place restoration, shouldn’t have neg. response on oral cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is placement of preparation finishing line ?

A

either supra gingival, equigingival, or subgingival

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why are Supra- & equi-gingival margins advantageous ?

A

preparation and impressions more easily accomplished

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why do most dentists place crown margins subgingivally ?

A

aesthetic to hide margin but newer ceramic materials allow placement of restorations supergingivally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What aspects to consider when gaining soft tissue contour ?

A
  • Biotype
  • Biological width/margin placement
  • Precision of marginal fit
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is biotype?

A
  • Square shaped teeth associated with THICK biotype

* Triangular shaped associated with THIN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is thin scalloped biotype?

A
  • Distinct disparity between height of gingival margin on direct facial and height of gingival margin interproximally
  • Delicate/friable soft-tissue curtain
  • small amount of attached masticatory mucosa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is underlying osseous form like in thin biotype?

A

scalloped, dehiscences and fenestrations often present

- FLATTER/THICKER in thick

19
Q

how does thin biotype react to insult?

A

by recession

, by pocket depth in THICK

20
Q

Where are contact areas of adjacent teeth located in thin biotype

A

toward the incisal or occlusal thirds

, towards apical in THICK

21
Q

What are contact areas of adjacent teeth like faciolingually and incisogingivally in THIN Biotype?

A

• Small contact areas

22
Q

Why do we have thick and thin biotype?

A
  • Due to thickness & contour of bone
  • Soft tissue = top of the bone
  • Thick biotype = thick bone vice versa
  • thick biotype posteriorly & thin anteriorly
23
Q

Where is it common to see thin biotype ?

A

in teens on lower incisors due to orthodontic treatment

24
Q

What is probing like on thin biotype?

A

probe a couple of mm physiologically

- must know depth of sulcus when placing margin

25
Q

When do we risk violating biological width ?

A

• When placing margins into sulcus for aesthetics, and precision not controlled

26
Q

What happens when touch internal epithelium when placing margin ?

A

bleeding will last for a short period

27
Q

What happens when touch connective tissue when placing margin ?

A

• If patient carries on bleeding & doesn’t stop , have touched connective tissue, must wait for health to be achieved again to place the restoration

28
Q

Why must we respect gingival curves when creating crowns?

A

prevent plaque traps & violate biological width

29
Q

What happens with overhanging margins?

A

supergingival flora will be detected related to chronic periodontitis.

30
Q

What happens if sulcus is 4mm or greater?

A

deemed pathological

31
Q

What if you have a thin biotype for margin placement ?

A

stay away from gingival tissue/sulcus & stay at margin

32
Q

What if you have 3mm probing depth into sulcus in thick biotype?

A

can place margin into sulcus for 1mm deep

33
Q

What is classing for interdental papilla ?

A

o Class I > Optimal prognosis - 2mm from CEJ or 4 - 5mm from contact point
o Class 2 > Guarded prognosis - 4mm from CEJ or 6 - 7mm from contact point
o Class 3 > Poor prognosis >5mm from CEJ or >7mm from contact point.

34
Q

What does longer teeth mean ?

A

less likely are there to be interdental papilla present

35
Q

What can food impaction be a result of ?

A

o Abnormal cusp contact between marginal ridges
o Open/poor contact points between tooth & restorations
o Under built restorations & over erupted opposing teeth

36
Q

Why happens if we have less precise margin ?

A

more cement will be exposed, cement is rough and act as PRF

37
Q

How to define a clinically acceptable margin ?

A

no concrete threshold for maximum marginal discrepancy that’s clinically acceptable

38
Q

What must occur before any corrective therapy occurs?

A

o Dietary analysis/advice & smoking cessation
o Oral hygiene procedures
o Exposure to and use of fluoride toothpastes
o Advise on oral hygiene

39
Q

What if gingivitis present before restoration ?

A

o Will bleeding prevent adequate moisture control

o Will there be spontaneous haemorrhage on preparation or when a matrix band or strip is placed

40
Q

What if periodontitis present before restoration ?

A

o Will pocketing and bone loss mean poor restoration contours and aesthetics (“black triangle” disease)
• Is floor of restoration going to be placed deeply sub gingival because of root caries?
o if so, how deep before sound tissue is found, or the pulp exposed?
• use temporary restoration & wait for tissue to heal

41
Q

What happens if a bad restoration left in ?

A

inflammation

42
Q

What are long term consequence of gingival and perio inflamm?

A
  • localised alveolar bone loss
  • root caries
  • gingival recession
  • 2nd caries at restoration margin
  • plaque increase in pocket formation, depth w/ further loss of CA
43
Q

What to do when can’t reach margin ?

A
  • Perio. surgery> reduce tissue towards apical direction
  • Drill bone downwards
  • usually done in patients need crowns

CSA periodontology (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions