all ceramic classification

Question 1

category number

Answer 1

I-VI

Question 2

Class I

Answer 2

POWDER LIQUID CERAMICS

Predominatley glass – aluminosilicate glass

feldspathic

Question 3

feldspathic is?

Answer 3

Class I - glass

Question 4

class II

Answer 4

MILLED OR PRESSED

PARTICLE FILLED GLASS – high lithium or lantahnum

• leucite
  reinforced
• LITHIUM DISILICATE

Question 5

leucite reinforced is

Answer 5

class II

glass particle filled

Question 6

lithium disilicate is ?

Answer 6

class II – particle - filled glass

Question 7

class III

Answer 7

hi strength crystalline ceramics – IPC – glass infiltrated - in ceram alumina

Question 8

Class IV

Answer 8

GLASS FREE ceramics

polycrystalline solids

ALUMINA

ZIRCONIA

Question 9

alumina is

Answer 9

class IV

GLASS FREE

Question 10

zironcia is

Answer 10

class IV

GLASS FREE

Question 11

Class V

Answer 11

metal ceramics – alumina

Question 12

Class VI

Answer 12

DNH – ENAMIC

Question 13

enamic is

Answer 13

class VI

Question 14

polycrystalline solids represent

Answer 14

alumina and zirconia

Question 15

descfibe enamic

Answer 15

double network hybrid

class VI of ceramic

some ceramic and some polymer

Question 16

describe class I ceramics and their use

Answer 16

highly esthetic and translucent

bonding to ENAMEL maximizes the success – margins in enamel and 0.2 to 0.3 mm of ceramics thickness for each shade change

weakest – but aesthetic

Question 17

applicatin of class II

Answer 17

glass ceramics – milled or pressed

same indicatino as class I but stronger

can be crowns UP TO THE FIRST MOLAR

bonding to enamel maximizes successful outcome – margins in enamel

Question 18

can youo etch class IV? and what compromises this group?

Answer 18

NO – more opaque these are polycrystalline solid

alumina and zirconia

Question 19

interpenetrating phase ceramics are what class?

Answer 19

III — high risk areas where bonding is questionable due to lack of enamel – opque need 1.22 to 1.5 mm thickness

Question 20

resin nano ceramics??

Answer 20

Class VI — HYBRID

Question 21

when to use class VI? which are these?

Answer 21

enamic – hybrids / cera

strong so usable in high risk areas – MINIMAL PREP

CRACK PROPAGATION CANCELLING PROPERTIES

NOT TRANSLUCENT – and suffers to some extend in aesthetics

crowns, onlways, inlayss, LAVA ultimate

veneers

Question 22

double network hybrids where?

Answer 22

wherever metal could be considered – so very strng an aesthetic substitute for all metal indirect restorations

Question 23

keep enamic on how?

Answer 23

BOND – enamic etch with 5% hydrophloric acid **