Brainscape's Knowledge GenomeTM

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


See full index

DOH110 Oral Health sciences 1 > W1 Dental terminology > Flashcards

W1 Dental terminology Flashcards

1
Q

how many teeth do adults have?

A

32

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

how many teeth do children have?

A

20

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

Whats the difference between adult & decidous

A

Deciduous teeth are whiter (dentine thicker)

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

whats the mandibular mean?

A

lower jaw

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

whats the maxillary jaw mean?

A

relates to the upper jaw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is a mixed dentition

A

a series of primary and secondary teeth

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

FDI notation

A

ways we can numerically associate numbers with teeth

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

Palmers notation

A

used by dental professions to associate info with a specific tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Midline

A

imaginary line dividing the body into left and right

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

Describe the buccal surface

A

a surface of the tooth, posterior towards the cheek

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Describe Labial

A

an anterior surface of the tooth closest to the lip

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

What is the basic composition of GIC?

A

Cement powder: Aluminosilicate glass (calcium or strontium), fluoride (oxygen scavenger)
+
Acid polymer: Polyalkeonic

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

What does GIC stand for?

A

Glass-Ionomer Cement

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

What is the composition of Ion-leachable Glass?

A 
Sodium fluoride
Calcium fluoride
Aluminium fluoride
Aluminium oxide
Aluminium phosphate
Silicon dioxide
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the 3 stages of setting reaction?

A

Dissolution
Precipitation of Salts
Hydration of Salts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe Dissolution

A

The surface layer of the glass is attached by the polyacid to form a diffusion-based union between the two. 20-30% of the glass is decomposed and calcium/strontium, aluminium and fluoride ions are released to yeild a cement sol.

17
Q

Describe Precipitation of Salts

A

Initial clinical set occurs by cross-linkage of the more readily available ions. Reaction is rapid 4-10 minutes from start of mixing. Maturation takes place over 24 hours

18
Q

Describe the Hydration of Salts

A

Maturation phase of the progressive hydration of the matrix salts resulting in improvement of the physical properties ,takes place upto several days.

Final material is porous enough to allow free movement of hydroxyl and fluoride ions in and out of material

19
Q

Advantages of GIC?

A 
Biological potential of GIC
Resistance to plaque
Pulp response to GIC
Fluoride release
Sensitivity to luting materials
20
Q

What is meant by Biological potential of GIC?

A

Contains calcium, strontium, and fluoride ions- all are able to migrate in and out of material and aid remineralisation

21
Q

What is meant by Resistance to plaque

A

Colonies FAIL to thrive in presence of fluoride

22
Q

What is meant by Pulp response to GIC?

A

Creates very favorable conditions. Acid of material pH ranges between 0.9-1.6 but increases within the first hour and inflammation resolves 10-20 days

23
Q

How long does fluoride release in GIC restoration?

A

It has major clinical significance and can continue upto 7 years after restoration is placed

24
Q

What is the solubility level of the GIC?

A

Low referring to does not dissolve in water

25
Q

Can GIC disintegrate?

A

Higher rates in patients with Xerostomia <1year unless laminated with composite resin

26
Q

Is GIC susceptible to fracture and abrasion?

A

Brittle fracture yes, it is also less resistant to abrasion but improves as it matures

27
Q

Explain how GIC bonds to the tooth

A

Initiated by polyalkeonic acid → calcium of hydroxylapatite → phosphate ions are then displaced. Setting of GIC release of mineral ions from enamel/dentine leads to buffering of polyacid a ↑ pH and re-precipitation of minerals at the tooth interface.

Chemical bonding occurs through combined
calcium/strontium phosphate/polyalkenoiate
crystalline structure acting as an interface
between both enamel/dentine and the set
material. Known as diffusion-based adhesion.

28
Q

What are the barries to adhesion?

A

If smear layer is not removed
Contamination of blood, saliva excess water
If setting reaction is far advanced before application

29
Q

What is the water balance of autocure GIC?

A

Water in: immediately critical

Water out: critical for 6 months

30
Q

What is the water balance of Resin-modified and other GICs?

A

Water in: less critical for RM

Water out: critical for two weeks for all cements

31
Q

Describe the clinical handling of GIC

A

10% polyacyrlic acid function to condition prepared cavity and removes smear layer. DO NOT etch.

32
Q

What are the indications for GIC?

A

Deciduous teeth
Root caries
Temp restorations
Fissure protections

33
Q

What are the contraindication of GIC?

A

Class IV fractures
Lost cusp areas
Under PFMS
Areas of high occlusal load

34
Q

List 4 advantages of GIC

A

Bonds to enamel and dentine
Fluoride release and recharge
Tooth coloured
Minimal cavity prep

35
Q

List 4 disadvantaged of GIV

A

Poor wear resistance
Poor longevity in xerostomic patients
Less polishability than resin
Opacity higher than resin

DOH110 Oral Health sciences 1 (25 decks)

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