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Flashcards in Materials Final Deck (69):
1

What dental wax is supplied in sheets and can be used to record the occlusal rim for dentures

Baseplate wax

2

What can be used under direct and indirect restorations

Desensitizer/primer

3

Guidelines for mixing dental cement

Read instructions, determine use and measure powder and liquid with powder and liquid on opp sides, divide powder in small increments

4

What type of crown doesnt cover the entire anatomic portion of the mouth

Three-quarter crown

5

You can lengthen or extend the borders of the impression tray by using what

Utility wax

6

What is the powder to water ration for high strength stone

100 stone to 19-24ml water

7

When a patient has a three unit bridge what is used to clean under the Pontic

Bridge threader

8

Physical pulpal stimuli

Thermal changes/electrical energy

9

Mechanical pulpal stimuli

Vibrations from handpiece during prep, traumatic occlusion

10

Chemical pulpal stimuli

Acidic materials

11

Biologic pulpal stimuli

Bacteria from saliva contacting pulpal tissues

12

How are elastomeric impression materials mixed

Pad/spatula, gun

13

Abutment

Natural tooth serves as support for replacement tooth

14

Pontic

Artificial tooth replaces missing natural tooth

15

Can intrinsic stains or severe tetracycline stains be bleached

Yes

16

What type of indirect restoration is designed to fit snugly within a tooth preparation such as a class 2, covering only a portion of the occlusal and proximal surface

Inlay

17

What type of impression tray covers half of a dental arch

Quadrant tray

18

What type of impression material is used when an accurate impression is essential

Final impression, elastomeric

19

What type of cement is most versatile

Glass ionomer

20

Acid etching utilizes etchant that contains what type of acid

Maleic acid/phosphoric acid

21

What is the purpose of provisional coverage

Temporary crown restores and maintains function to certain areas keep patient comfortable during tooth preparation/final cementation

22

What can be used if decay has extended into or is close to the pulp

Liner, base, desensitizer

23

The retromolar area, lingual frenum, and the mylohyoid ridge must be seen in which impression

Mandibular Alginate impression

24

What cements can be light cured

Composite resin, glass ionomer

25

Cure

Setting process of dental material initiated by chemical reaction or buy light in blue waves spectrum

26

What can be used for core buildup

Amalgam, reinforced glass ionomer, self curing composite

27

For quick bleaching results which method would be best

In office treatment

28

Maryland bridge/resin bonded bridge

A pontic with wing like extensions from mesial/distal sides

29

What type of tray is used for the reversible hydrocolloid

Water cooled tray

30

If placing a post for retention aid, what procedure would have had to have been done prior

Core buildup, enlarging the treated pulp canal/keying slots on adjacent Dentin

31

Example of enamel bonding

Placement of sealants, bonding of ortho brackets, use of resin bonded bridges

32

When using zinc phosphate as a base what is used first

A liner

33

Why do you keep the Alginet impression moist before pouring it up

Will provide an atmosphere Close to 100% relative humidity causing the least amount of distortion

34

The cervical margins of the provisional should have no more then how many millimeters of space between the provisional and the margin of the prepped to

0.5 mm

35

Which type of ZOE is used for the cementation of provisional coverage

Type one, temp luting cement

36

When and how is varnish applied

Applied with small disposable applicator after liner is applied

37

Microleakage

Microscopic leakage at the interface of the tooth structure and the sealant or restoration

38

When cementing bonded brackets, what type of glass ionomer cement is used

Type five

39

If the patient needs to wear a provisional coverage for a longer period of time what procedure might they have had

Implants or Perio therapy

40

Pre-fabricated Preformed polymer crown

Use a polymer shell filled with hybrid composite resin material

41

Pre-fabricated poly carbonate crown

Only anterior's varying sizes when appearance is important

42

Pre-fabricated stainless steel crown

Aluminum primary posterior restoration when strength is essential in color match is not a concern

43

What is the most common and natural looking provisional coverage used for crown and bridge preparations

Custom/polycarboxylate

44

Calcium hydroxide (Dycal) uses and what is it compatible with

Cavity liner, protect pulp from chemical irritation, stimulates production of reparative or secondary Denton, compatible with all types of restorative material

45

About how many years does tooth whitening last

3 to 5 years

46

In office teeth whitening

One hour best treatment

47

At home teeth whitening

Two weeks second best (under care of Dentist)

48

Over the counter teeth whitening

Brush On: minimum amount whitening strips: 7 to 10 days trays with gel: affordable, similar to dental office

49

Where shouldn't the provisional crown extend below

Margin of the preparation

50

What can dental varnish do

Seal Denton tubules and reduce microleakage

51

Model trimmer

Used to trim stone or plaster models, abrasive grinding wheel

52

How will gypsum material be affected if water is added after the mixing process has begun

The crystallization (setting) process will be disturbed and won't have desired strength

53

What is this smear layer and wet material removes it

Very thin layer of debris on newly prepped Denton and acid etch and is used to remove it

54

Permanent cement are used for looting what types of restoration

Long term cementation of permanent cast restorations (inlay, crown, bridges, laminate veneers, ortho fixed appliances)

55

Indications for provisional coverage

Prevent/reduce sensitivity/discomfort of prepped tooth/surrounding tissue, maintain function/aesthetics, protect margins of prep, prevent shifting of adjacent/opposing teeth

56

What do insulating bases protect the tooth from

Thermal shock

57

What can be cemented into the pulpal canal and can be made from an acrylic pattern by a lab technician

A cast post

58

What is the purpose of a core build up

Used when tooth is vital, supports the cast crown and provides a larger area of surface retention for cementation of crown

59

What type is a looting cement classified as and what does it act as

Type one, acts as an adhesive to hold together the indirect restoration and the tooth structure

60

Which type of cement is used with provisional coverage

ZOE type one

61

Why are protective bases placed

Additional layer in restoration process used to protect pulp went to the prep is moderately deep too deep

62

When one or more teeth are missing from the same arch or quadrant a permanent what would be recommended

Crown and bridge or fix prosthodontic or fixed bridge

63

What type of glass ionomer used for restoring an area of erosion near the gingiva

Type two

64

What is placed under a porcelain restoration to mask tooth discoloration

Opaquer

65

What would be an indication for fixed prosthodontics

Supportive tissues healthy, suitable abutments present, patient in good health, patient has skills/motivation for good oral hygiene, one or two adjacent teeth missing same arch

66

Procedure/application of acid etchant material

Liquid or gel with syringe type applicator, 15 to 20 seconds recommended time for placement, placed on enamel and/or Denton in prep for bonding composite resin or sealant

67

Application and uses for desensitizer

Used to prevent or treat hypersensitivity (primer), used instead of varnish, seals dentinal tubules preventing oral fluids from sleeping between tooth and restoration. Use sparingly no materials contact soft tissue

68

Where is the varnish applied in the cavity prep

After liner applied within entire prep, thin coating on walls, floors, and margin

69

Dental materials that are applied while still pliable and can be adapted are classified as what

Direct restorative materials