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Dental Materials > Introduction > Flashcards

Introduction Flashcards

0
Q

Science that deals with the study of different chemical and physical properties, their manipulation and the clinical application or usage of the various materials used in the dental practice.

A

Dental Materials

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1
Q

Give an example of physical properties

A

Elasticity
Malleability
Size

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2
Q

Objectives of Dental Materials

A
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3
Q

Fields in dentistry and dental materials

A 
✏️ Endodontics
✏️ Orthodontics
✏️ Prosthodontics
✏️ Pediatric Dentistry
✏ Periodontics
✏️ Restorative Dentistry
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4
Q

Deals with the tooth pulp and the tissues surrounding the root of tooth.

A

Endodontics

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5
Q

Study and treatment of malocclusion

A

Orthodontics

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6
Q

Field that deals in the replacement for something that is missing in the oral cavity

A

Prosythodontics

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7
Q

Give an example of the treatment for prosthodontics

A

FPD

BRIDGE

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8
Q

Concerned with the diagnosis and treatment of conditions of the teeth and mouth in children

A

✒️ Pediatric Dentistry

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9
Q

Focuses on the preservation and restoration of decayed,defective,missing and traumatized teeth.

A

Restorative Dentistry

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10
Q

Orthodontics materials:

A 
Molar band
Band
Archwire
Hook
Bracket
Elastic ligature
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11
Q

One of the most prevalent diseases affecting humans.

A

Dental Caries

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12
Q

He divided caries into 6 classifications

A

G.V Black

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13
Q

Lesion or caries found on the occlusal surface of posterior teeth or lingual surfaces of anterior teeth.

A

Class 1

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14
Q

Lesion or caries found on proximal surfaces of posterior teeth

A

Class 2

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15
Q

Lesion or caries found on proximal surface of anterior teeth NOT involving the incisal angle

A

Class 3

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16
Q

Lesion or caries found on proximal surface of anterior teeth involving the incisal angle.

A

Class 4

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17
Q

Lesion or caries found on the cervical area.

A

Class 5

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18
Q

Lesion or caries found on the surface that are not classified into class 1-5

A

Class 6

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19
Q

Example of Class 6

A

Cusp tip

Middle area of tooth

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20
Q

Agencies that govern approval of dental materials

A
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21
Q

FDI

A

Federación Dental Internacional

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22
Q

ADA

A

American Dental Association

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23
Q

ISO

A

International Organization for Standardization

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24
Q

Ability to resist applied forces without fracture or excessive deformation

25
Q

Maximum stress that a structure can withstand without sustaining a specific amount of plastic strain or stress at the point of fracture

26
Q

Strength towards and in line with each other (flattening)

A

Compressive Strength

27
Q

Ability to withstand compressive stress

A

Compressive strength

28
Q
  • towards direction

- forces in line

A

Compressive strength

29
Q

Tend to move away from each other

A

Tensile Strength

30
Q

Kind of strength that can withstand a twisting motion

A

Shear strength

31
Q

Flattening motion

A

Compressive strength

32
Q

Elongating motion

A

Tensile strength

33
Q

Twisting motion

A

Shear strength

34
Q

Combination of compressive, tensile, and shear

A

Complex strength

35
Q

External force given to a body

36
Q

Formula for stress

A

Stress= F
➖
A

37
Q

4 types of stress

A
  1. Tensile
  2. Compressive
  3. Shear
  4. Complex
38
Q

Response of a materials to stress

39
Q

Formula for strain

A

Strain = change in length
➖➖➖➖➖➖➖➖
Original length

40
Q

Ability to go back to its original form

A

Resilience

41
Q

Amount of energy absorbed by a structure when it is stressed not to exceed its proportional unit

A

Resilience/ Springiness

42
Q

Greatest stress to which material can be subjected to such that it will return to its original dimension when the forces are released

A

Elastic Limit

43
Q
  • ability of material to absorb elastic energy and to deform plastically before fracturing
  • difficult to break
44
Q

Example of toughness

A

Rubber band

45
Q

Fracture of the material at or near its proportional limit

A

Brittleness

46
Q

Relative inability of a material to deform plastically

A

Brittleness

47
Q

Example of brittleness

48
Q

Ability of a material to withstandor resist scratching or indentation using a sharp instrument

49
Q

Tests for hardness

A

✔️ knoop ✔️ brinell
✔️ rockwell ✔️ barcol
✔️ vickers ✔️ shore

50
Q

Vickers

Brinell

51
Q

Ability of the materials to be twisted or contoured in any desired form or shape without breaking

A

Flexibility

52
Q

Example of flexibility

53
Q

Property of the material to be deformed continuously even without altering the magnitude of the applied force

54
Q

Ability to withstand a permanent deformation under a compressive load

A

Malleability

55
Q

Ability of a material to withstand permanent deformation under a tensile load without a rapture

56
Q

Presence of dissimilar/ different metals in the oral cavity producing electric shock

  • example
A

Galvanism

  • saliva as conductor
57
Q

Rate at which heat flows through a material

A

Thermal conductivity

58
Q

Cancer producing

A

Carcinogenic

59
Q

Caries producing

A

Cariogenic

Dental Materials (2 decks)

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