Lecture 1 Flashcards

1
Q

What are the 3 classifications of dental materials

A
  1. Preventative materials 2. Restorative materials 3. Auxiallary materials
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2
Q

Preventative materials

A

Materials that slow or prevent the onset and progression of disease

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3
Q

Restorative materials

A

synthetic components that repair or replace damged or missing tooth

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4
Q

Give two examples of restorative dental material

A

Crown & veneers

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5
Q

Define:

Restorative (temporary) materials

A

Materials used to restore for a SHORT period of time

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6
Q

Restorative (definitive)

A

Long term or final treatment

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7
Q

Auxiliary Dental Materials

A

Materials that are used to fabricate restorations but do not become a part of the restoration. ex. dental stone

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8
Q

Biomaterials

A

Any material that interacts with biological systems

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9
Q

What is the composition of Enamel

A

96% inorganic (mineralized) 1% organic 3% water

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10
Q

Where is Hydroxyapatite (HA) found in the body?

A

Any hard tissue ex. Enamel, dentin, bone

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11
Q

What is the name where Dentin & enamel meet

A

Dentinoenamel Junction (DEJ)

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12
Q

What cells form enamel

A

ameloblasts

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13
Q

In enamel bonding, enamel is etched with…?

A

Phosphoric acid

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14
Q

What is the most beneficial substitution to (HA)

A

Fluoride which substitues the hydroxyl group to make Flouriapatite

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15
Q

Define Dentin

A

Dentin is a complex hydrated composite structure that forms the majority of the tooth

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16
Q

Define Odontogenesis

A

The development of teeth and their supporting structures

17
Q

Cells responsible for dentin formation?

A

Odontoblasts

18
Q

Dentin-pulp complex

A

Tissue where dentin & pulp chamber meet

19
Q

What is a distinct feature of dentin

A

Dentin Tubules

20
Q

What are the contents of Dentin tubules

A

Odontoblastic processes & fluid

21
Q

What is the % composition of Dentin

A

50% apatite 30% organic (type I collagen) 20% fluid

22
Q

What is primarily found in Peritubular dentin

A

Mostly apatite crystals

23
Q

Intertubular dentin

A

Dentin found between the tubules

24
Q

Primary Dentin

A

Dentin formed by odontoblasts BEFORE tooth eruption

25
Q

Secondary Dentin

A

Dentin formed by odontoblasts AFTER tooth eruption

26
Q

Tertiary Dentin

A

Reparative dentin, forms in response to trauma

27
Q

Transparent Dentin

A

Type of tertiary dentin, characterized by the tubules being occluded w/ mineral

28
Q

Smear layer

A

A collective term for any debris left on tooth after tooth preperation

29
Q

Why is it important to remove the smear layer and what do we use to remove it?

A

The smear layer can plug dentin tubules. Use acid etching to clean it off

30
Q
A
31
Q

Label the image

A

finish

32
Q
A

Review label

33
Q
A