Ch 47 Materials Flashcards Preview

Dentistry > Ch 47 Materials > Flashcards

Flashcards in Ch 47 Materials Deck (23):
1

Homogeneous

Uniform in quality and consistent throughout

2

Lathe

Machine used for cutting/polishing custom trays, provisionals, dentures, indirect restorations

3

Gypsum

Material used to form plaster of Paris and stone

4

Dihydrate

2 parts of water to every one part of calcium sulfate

5

Face bow

Portion of articulator used to measure upper teeth and compare with temporomandibular joint

6

Crystallization

Chem process crystals form into a structure

7

Hemihydrate

Removal of one half part water to one part calcium sulfate to form powder product of gypsum

8

Anatomic portion

Structural portion of dental model

9

Articulator

Lab device that stimulates movement of mandible and temporomandibular joint when models of dental arches attached

10

Slurry

Mixture of gypsum and water used in finishing models

11

Where is lab found in office

Separate space away from patient care

12

Which specialty practices might have more extensive lab

Fixed prosthodontics and orthodontics

13

A contaminated item found in lab

Impression

14

What piece of lab equipment used to grind away plaster/stone

Model trimmer

15

Which piece of lab equipment determines centric relation from diagnostic model

Articulator

16

Size wax spatula most commonly used in lab

#7

17

Another name for dental model

Dental cast

18

What material used to fabricate dental model

Gypsum

19

What form gypsum used to fabricate a die for indirect restoration

High-strength stone

20

Powder to water ratio of plaster for dental model (highest)

100/50

21

What are sections of a dental model

Anatomic and art

22

How long do u wait before u separate model from impression

40-60 minutes

23

What model do u trim first

Maxillary