Introduction

Question 0

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.

Answer 0

Dental Materials

Question 1

Give an example of physical properties

Answer 1

Elasticity
Malleability
Size

Question 2

Objectives of Dental Materials

Question 3

Fields in dentistry and dental materials

Answer 3

✏️ Endodontics
✏️ Orthodontics
✏️ Prosthodontics
✏️ Pediatric Dentistry
✏ Periodontics
✏️ Restorative Dentistry

Question 4

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

Answer 4

Endodontics

Question 5

Study and treatment of malocclusion

Answer 5

Orthodontics

Question 6

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

Answer 6

Prosythodontics

Question 7

Give an example of the treatment for prosthodontics

Answer 7

FPD

BRIDGE

Question 8

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

Answer 8

✒️ Pediatric Dentistry

Question 9

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

Answer 9

Restorative Dentistry

Question 10

Orthodontics materials:

Answer 10

Molar band
Band
Archwire
Hook
Bracket
Elastic ligature

Question 11

One of the most prevalent diseases affecting humans.

Answer 11

Dental Caries

Question 12

He divided caries into 6 classifications

Answer 12

G.V Black

Question 13

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

Answer 13

Class 1

Question 14

Lesion or caries found on proximal surfaces of posterior teeth

Answer 14

Class 2

Question 15

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

Answer 15

Class 3

Question 16

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

Answer 16

Class 4

Question 17

Lesion or caries found on the cervical area.

Answer 17

Class 5

Question 18

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

Answer 18

Class 6

Question 19

Example of Class 6

Answer 19

Cusp tip

Middle area of tooth

Question 20

Agencies that govern approval of dental materials

Question 21

FDI

Answer 21

Federación Dental Internacional

Question 22

ADA

Answer 22

American Dental Association

Question 23

ISO

Answer 23

International Organization for Standardization

Question 24

Ability to resist applied forces without fracture or excessive deformation

Answer 24

Strength

Question 25

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

Answer 25

Strength

Question 26

Strength towards and in line with each other (flattening)

Answer 26

Compressive Strength

Question 27

Ability to withstand compressive stress

Answer 27

Compressive strength

Question 28

- towards direction | - forces in line

Answer 28

Compressive strength

Question 29

Tend to move away from each other

Answer 29

Tensile Strength

Question 30

Kind of strength that can withstand a twisting motion

Answer 30

Shear strength

Question 31

Flattening motion

Answer 31

Compressive strength

Question 32

Elongating motion

Answer 32

Tensile strength

Question 33

Twisting motion

Answer 33

Shear strength

Question 34

Combination of compressive, tensile, and shear

Answer 34

Complex strength

Question 35

External force given to a body

Answer 35

Stress

Question 36

Formula for stress

Answer 36

Stress= F ➖ A

Question 37

4 types of stress

Answer 37

1. Tensile 2. Compressive 3. Shear 4. Complex

Question 38

Response of a materials to stress

Answer 38

Strain

Question 39

Formula for strain

Answer 39

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

Question 40

Ability to go back to its original form

Answer 40

Resilience

Question 41

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

Answer 41

Resilience/ Springiness

Question 42

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

Answer 42

Elastic Limit

Question 43

- ability of material to absorb elastic energy and to deform plastically before fracturing - difficult to break

Answer 43

Toughness

Question 44

Example of toughness

Answer 44

Rubber band

Question 45

Fracture of the material at or near its proportional limit

Answer 45

Brittleness

Question 46

Relative inability of a material to deform plastically

Answer 46

Brittleness

Question 47

Example of brittleness

Answer 47

Porcelain

Question 48

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

Answer 48

Hardness

Question 49

Tests for hardness

Answer 49

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

Question 50

Vickers | Brinell

Answer 50

V | Ball

Question 51

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

Answer 51

Flexibility

Question 52

Example of flexibility

Answer 52

Wires

Question 53

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

Answer 53

Flow

Question 54

Ability to withstand a permanent deformation under a compressive load

Answer 54

Malleability

Question 55

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

Answer 55

Ductility

Question 56

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

Answer 56

Galvanism - saliva as conductor

Question 57

Rate at which heat flows through a material

Answer 57

Thermal conductivity

Question 58

Cancer producing

Answer 58

Carcinogenic

Question 59

Caries producing

Answer 59

Cariogenic