Fixed Prosth 3rd year > L10- Cements > Flashcards

L10- Cements Flashcards

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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
inlays and onlays with RMGI
NO | - does not reinforce the ceramic restoration
26
inlays and onlays with RMGI
NO | - does not reinforce the ceramic restoration
27
resin cements are what cure
dual cure self cure light cure (rely-x veneer - COLOR STABILITY ) NO AMINE
28
dual- cure resin cements
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
29
HEMA implication
can be toxic | - released by RMGI
30
RGMI expand and swell
yes they can linear expansion
31
calibra is 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
use only what for veneer cementation
BASE MATERIAL for veneer cementation
33
multi-link automi ivoclar vivadent describe needs what to be effective? what can impair cure
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
do not use what with multilink automix to clean?
DO NOT USE PHOSPHORIC ACID TO CLEAN RESTORATION
35
USE WHAT FOR VENEERS
CALIBRA
36
better esthetics towards what type
resin / composites
37
sensitivity factors
conventional and GI so more sensitivity potential increases with resin / composite luting materials
38
water uptake
resin modified glass ionomer
39
compressive strength a weakness of
resin modified glass ionomer
40
film thickness good with
resin modified glass ionomer
41
fit checker should not be where
at the margin
42
what is something that could be affecting the fit
porcelain on the internal aspect of the margin
43
HEMA can interact with
type I collagen protein- alter morphology of human gingival fibroblasts
44
one step means
self etch, self adhesive, self cure ` - be weary of these
45
example of purely light cure cement
variolink veneer by ivoclar vivadent
46
if using variolink veneer how clean restoration surface?
with H2) and air then with PHOSPHORIC ACID FOR 15 seconds
47
apply variolink veneer to where
to the restoration OR into the tooth cavity for INLAYS AND ONLAYS
48
PHOSPHORIC ACID USE for calibra VENEERING light cured
apply 35% phosphroric acid to enamel for 15 seconds - 10 seconds dentin
49
strength increases towards
resn / composite cements
50
increase fluoride release increases towards
GI, RMGI, conventionals
51
aesthetics increase towards
resin and composire luting materials
52
ease of use increases towards
GI, RMGI, and conventional
53
sensititivty least with what type of luting
conventinal, GI, and RMGI
54
how to use fit checker
no fit checker at the margin = great fitting of crown
55
conventional cementation steps
clean tooth try in CHECK CONTACTS FIRST verify fit AT MARGINS NEXT then occlusion - centric then eccentric
56
floss with conventinal cement
with knot -- THROUGH INTERPROXIMAL AREAS
57
first two steps in cementation with zirconia
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
non-silica based are
NON -etachble so rely on mechanical roughening - sandblasting with alumina particles or chemical bonding with adhesive monomer in special primers
59
phosphate ester groups importanec
THESE WIHIN THE ACIDIC MONOMER RESULTS IN CHEMICAL BONDING TO METAL OXIDES - important for non solica and non etachble ceramics
60
ivoclean does what
gets rid of phosphate bonds
61
in office etch with
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
contaminated resotrations can be cleaned in two ways with ETCHABLE RESTORATIONS
1. IVOCLEAN 20 SECS | 2. 37% PHOSPHORIC ACID --- except zirconia and only if NOT USING MULTI-LINK
63
all etachable ceramic cementation with multilink how clean then and prepare then
silane or monobond plus
64
all etable hybrid is
enamic
65
hybrid ceramic? cement with? clean with? can you etch?
enamic can use multilink - clean intaglio with ivoclean but can etch endo tx. tooth entirely with H3PO4 for 20 seconds vital - only margins
66
what is ivoclean
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
metals such as zirconium show affanity for
phosphate group
68
monoblond plus is what? combines?
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
DO NOT USE WHAT WITH MONOBOND
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
silane coupler
improves wettability and contributes to covalent bond formation between porcelain and composite resin
Fixed Prosth 3rd year
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