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Fixed Prosth 3rd year > L10- Cements > Flashcards

L10- Cements Flashcards

1
Q

conventinal cementation

A

filling space to create “retention” via luting forces

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2
Q

adhesive cementatin AKA

A

BONDING

using primers to create “adhesion” via chemical bonding
- it sticks

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3
Q

what are luting agent

A
  1. water based acid- base cements
  2. non - aqueous / oil bases acid - cements
    - between glass ioinomer and resin composite - compomers
  3. resin based
    - bonding of structure to surface
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4
Q

luting agents we use

A
  1. provisional or temporary cements
  2. ## provisional cements for implants
  3. permanent cements
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5
Q

provisional luting agents are agents that

A

binding substances used to hold proviosnala and shorter
- be retreivable

  1. bind restorations to teeth for short periods of time
  2. permit ease of removal and facilitate continued treatment
  3. soft luting agent
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6
Q

eugonel not compatible with

A

resin bonding

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7
Q

filling a space and binding adjacent surfaces

A

NON - adhesive - conventional

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8
Q

soft luting agent

A

provisional luting agents

like temp bond - non eugonal

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9
Q

permanent luting agents

A

conclude t in that area

hard luting

non-adhesive
adhesive
- chemical interacion at surface

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10
Q

primers?

A

create chemical bond to tooth structure - dentin and enamel and to restorative materials

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11
Q

bonding translates to?

important for?

A

*** this is important
REINFORCEMENT OF RESTORAITON
- increases strengnth of the material being used as well

*important for lower strength ceramics like feldspathic and leucite

like bonding ceramics

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12
Q

luting agents available

A
  1. zinc phosphate cement
  2. zinc oxide cements w and w/out eufenol
  3. polycarboxylate cement (duralon)
  4. glass ionomer
  5. resin modified glass ionomer cements
  6. resin cements
    - dual cure
    - light cure
    - self etching resin cements
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13
Q

zinc phosphate is

A

luting agen

- FLECKS

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14
Q

zinc oxide is

A

TEMPBOND with / without eugenol

luting agents

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15
Q

polycarboxylate

A

DURELON

luting

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16
Q

glass ionomer luting is

A

KETAC -CEM

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17
Q

resin modified GI’s

A

Rely - x

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18
Q

zinc phosphate cement / brand name and key characteristics

A

keystone - WAS GOLD STANDARD – now coming back as teh “go-to” cement for implant crowns

exothermic reaction - acid pH

mix is CRITICAL

incorporate POWDER INTO LIQUID

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19
Q

durelon cement

A

polycarboxylate cement

chelation molecular bonding to the tooth surface

acceptable for retention of metal supported crowns and bridges

***long term provisoinal use

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20
Q

durelon not compatible with

A

TITANIUM – causes corrosion

  • also does not have good adhesion to gold
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21
Q

KETAC CEM - more detail

A

GLASS IONOMER

biocompatibilty - releases fluoride

but WATER ADSORPTION - SWELLING

SLOW SET TO COMPLETE SET

*offers chemical chelation – adhesion to enamel and dentin

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22
Q

Rely x - luting cement

A

resin modified glass ionomer

  • light cure properties

moisture tolerant
biocompatibiily
self adhere to tooth w/out adhesives
fluoride release

has improved compressive strength

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23
Q

RMGI as a category

A
  1. easy to mix and load and seat
  2. consistent mix ratios
  3. enhanced marginal integrity
  4. high fracture toughness
  5. sustained flouride release
  6. virtually no post op sensitivity
  7. requires mechanical retetnion
  8. EASY CLENA UP
    - vs a resin cement
  9. Working time 1-2 min Final set 4-5 min / also light activated
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24
Q

BSK of HEMA

A

RMGI release HEMA
- plus composites + resin cements release this

components of the composite are released into oral envionment

degradation are toxic and effect pulp and fibroblasts

  • can singigficantly alter the gingva fibroblasts and interfer with the presence of type I collagen
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25
Q

inlays and onlays with RMGI

A

NO

- does not reinforce the ceramic restoration

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26
Q

inlays and onlays with RMGI

A

NO

- does not reinforce the ceramic restoration

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27
Q

resin cements are what cure

A

dual cure

self cure

light cure (rely-x veneer - COLOR STABILITY ) NO AMINE

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28
Q

dual- cure resin cements

A

ability to self cure and light cure

balance of adhesive retention, preictable curing, stable color and ease of clean-up

desire for easier handling with maximum adhesive retention

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29
Q

HEMA implication

A

can be toxic

- released by RMGI

30
Q

RGMI expand and swell

A

yes they can

linear expansion

31
Q

calibra is a

A

dual cure system - DENTSPLY

microfill cement of 12-18 um thickness

2 viscosity’s 5 shades
- translucent and shade stability claim

adhesive - OPTIBOND NT

radio-opawue - 6 min set / 2 min working time

32
Q

use only what for veneer cementation

A

BASE MATERIAL for veneer cementation

33
Q

multi-link automi ivoclar vivadent
describe
needs what to be effective?
what can impair cure

A

dual cure

self cureign with light curing time
- used with self etch and self- curing primer

high radio-opacity
but available in different colors

working time 2 mins
curing time 5 mins

NEEDS ISOLATION to be effective

eugenol and hydrogen peroxide and other oxidative disinfectants will impair the cure

34
Q

do not use what with multilink automix to clean?

A

DO NOT USE PHOSPHORIC ACID TO CLEAN RESTORATION

35
Q

USE WHAT FOR VENEERS

A

CALIBRA

36
Q

better esthetics towards what type

A

resin / composites

37
Q

sensitivity factors

A

conventional and GI

so more sensitivity potential increases with resin / composite luting materials

38
Q

water uptake

A

resin modified glass ionomer

39
Q

compressive strength a weakness of

A

resin modified glass ionomer

40
Q

film thickness good with

A

resin modified glass ionomer

41
Q

fit checker should not be where

A

at the margin

42
Q

what is something that could be affecting the fit

A

porcelain on the internal aspect of the margin

43
Q

HEMA can interact with

A

type I collagen protein- alter morphology of human gingival fibroblasts

44
Q

one step means

A

self etch, self adhesive, self cure `

  • be weary of these
45
Q

example of purely light cure cement

A

variolink veneer by ivoclar vivadent

46
Q

if using variolink veneer how clean restoration surface?

A

with H2) and air then with PHOSPHORIC ACID FOR 15 seconds

47
Q

apply variolink veneer to where

A

to the restoration OR into the tooth cavity for INLAYS AND ONLAYS

48
Q

PHOSPHORIC ACID USE for calibra VENEERING light cured

A

apply 35% phosphroric acid to enamel for 15 seconds - 10 seconds dentin

49
Q

strength increases towards

A

resn / composite cements

50
Q

increase fluoride release increases towards

A

GI, RMGI, conventionals

51
Q

aesthetics increase towards

A

resin and composire luting materials

52
Q

ease of use increases towards

A

GI, RMGI, and conventional

53
Q

sensititivty least with what type of luting

A

conventinal, GI, and RMGI

54
Q

how to use fit checker

A

no fit checker at the margin = great fitting of crown

55
Q

conventional cementation steps

A

clean tooth
try in
CHECK CONTACTS FIRST

verify fit AT MARGINS NEXT

then occlusion
- centric then eccentric

56
Q

floss with conventinal cement

A

with knot – THROUGH INTERPROXIMAL AREAS

57
Q

first two steps in cementation with zirconia

A
  1. tooth / teeth must be clean and provisional cement removed with pumic and use chlorohexidine or hydrogen peroxide – BUT NOT OXIDE AGENTS IF USING MULTI-LINK
  2. restoration must be clean – air abrasion of fitting surface recommended (with zirconia)
58
Q

non-silica based are

A

NON -etachble

so rely on mechanical roughening - sandblasting with alumina particles or chemical bonding with adhesive monomer in special primers

59
Q

phosphate ester groups importanec

A

THESE WIHIN THE ACIDIC MONOMER RESULTS IN CHEMICAL BONDING TO METAL OXIDES

  • important for non solica and non etachble ceramics
60
Q

ivoclean does what

A

gets rid of phosphate bonds

61
Q

in office etch with

A

lithium disilicate - emax for 20 second 5% HF

enamic - 60 seconds with 5% HF or 30 seconds with 9.6% HF

feldspathic 120 secs with 9.6 %

62
Q

contaminated resotrations can be cleaned in two ways with ETCHABLE RESTORATIONS

A
  1. IVOCLEAN 20 SECS

2. 37% PHOSPHORIC ACID — except zirconia and only if NOT USING MULTI-LINK

63
Q

all etachable ceramic cementation with multilink how clean then and prepare then

A

silane or monobond plus

64
Q

all etable hybrid is

A

enamic

65
Q

hybrid ceramic?
cement with?
clean with?
can you etch?

A

enamic
can use multilink
- clean intaglio with ivoclean

but can etch endo tx. tooth entirely with H3PO4 for 20 seconds
vital - only margins

66
Q

what is ivoclean

A

alkaline suspension of zirconium oxide particels – bond to the PO4 contaminant adn remove them when rinsed
- applied to surfaces of restoration and leave for 20 seconds

so surface can be conditioned with Monobond

67
Q

metals such as zirconium show affanity for

A

phosphate group

68
Q

monoblond plus is what?

combines?

A

universal primer for conditioning of all types of restoration surfaces

can use with any dental material because it combines THREE DIFFERENT FUNCTINAL METHACRYLATES

  • SILANE
  • PHOSPORIC
  • SULFIDE
69
Q

DO NOT USE WHAT WITH MONOBOND

A

do not use phosphoric acid to clean metal or zirconia prior to use of monobond plus

  • or any other total etch system
  • will create a phosphate layer which blocks the primer from bonding to the surface of metal or zirconia restoration
70
Q

silane coupler

A

improves wettability and contributes to covalent bond formation between porcelain and composite resin

Fixed Prosth 3rd year (17 decks)

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