Calcium hvdfoxid
Temporary root canal fillini
Subbase Component of sealers
Calcium hydroxide
ort term action
1 — 2 weeks
Deslnfectlon, haemostasis
—
Calcium hydroxide
■ M
idle term action
— 3 months
Apexification
Chronic form of apical periodontitis
Calcium hydroxide
Lone term action
3 months and more
Prevention of resprption
oot canal filling
Ideal root canal filling (Grossman 1988)
Easy mixing
Sufficient working time
Good seal
X- ray contr ast
Easy removal
No shrinka ge
Long term volume stability
No bacterial growing
No permeability for fluids
Biocompatibility
No staining
Classification of root canal fillings
> So
lid
> Semisolid
> Pastes
Guttapercha
D
ried juice of the Taban tree (Isonandra percha
utta
1,4 - polyisoprene
Crystallin structure (60%
Brittle
Guttapercha
Beta phase
Alpha phase 42 — 49 °C
plastic
56 - 62° (a
amma ph
ooling proce
hase
very slowly (less than 0,5°C) — alpha phase mal cooling— b
Composition of guttapercha materials in endodontic
Guttapercha 19% - 22%
Zinc oxide 59 - 79%
Heavy metal salts 1% - 7%
Wax or resin
in 1% - 4%
lermopiastic synthetic polymer
> Points or material for injection
on
positio Polyester polymers Bioactive gla Radioopaque fillers (bismuthum oxichlorid a and baryum sulphate
Silver or titanium cones
> No good seal
> Silver cones - corrosi
on
Sealery
Chemically curing plastic materials
Goo
d adhesi
on to root carta.
X- ray c
Biocompatibility
Sealers
Zinc Oxide-Eugenol Chloropercha
Calciumhydroxide Resins
Glasionome
Silicone
Sealers
importance
illing of the spaces between the solid cones
Seal of the root canal filling
Zinc - Oxid Eugenol
owder:
co
Liquid:
Euge
Acidic resins
Good adhesivity, antimikrobial effect, cytotoxic, resorbable)
Zink Oxid Eugenol sealers
1
ulp Canal Sealer (Kerr,
, USA))
Tubuli- Seal (Kerr, USA)
Caryosan (Spofa Dental, CR)
—
Chloropercha
Po
wde
Canadian balsam Resins Guttapercha Zinc oxide
Liquid: Chloroform Resins
—
Chloropercha
astnosti:
Good adhesivity
Shrinkage
Toxicity
city
Calciumhydroxide sealers
Zinc oxide
Other components and vehicula
Kalciumhydroxidové sealery
r
atalystr (paste
c st
Itanium dioxide
Baryum sulphate
ugenol,. Eukalypt
others
Kalciumhydroxide sealers
> Increase of the healig potential of periapical tissues
Resins
R
ezorcin formaldehy
1
^ Polyketone
y Metacrylate
Rezorcin formaldehvdové piyskyfice
oxicity
Tox
N2, Endomethason, Riebler's paste, Foredent
Epoxide resin
r Base (powder, paste Bismuth oxid Titanium dioxide
Hexametylentetramine (Silver)
^ Catalyst (liquide, paste) Bisphenoldiglycidylether
Epoxide resin
Advantages
^ Long working time
^ Hydrophilic (good penetratio: ^ Good adhesion to the root ca
al
walls
> Volume stability ^ No dissolution ^ Antibacterial
Epoxide resin
(disadvantages)
> Dtfficiik removal
^ Initiatiory roxicity
able for the
cone techniq
e
Polyketone
ase
Zinc oxide Bismuth phosphate
Hexametylentetramine
> Lequid
Bisphenolglycidylether and other components
Polyketone
(advantages and disadvantages^
vantages
Good adhesion No contraction
No dissolution
Methacrylate resins
•m
Ultradent) —
UDMA
or in
action — single cone technique
Epiphany (Pentron Bis- GMA, etoxy bif- GMA, hydrophilic bifunctional methacrylates
Calcium hydroxide, baryum sulphate, baryum glass
silica.
Sealer in combination with Resilon
Glasionomer sealers
ase (powder) Aluminium silicate glass
taric acid
Glasionomer sealers
(Advantages and disadvantages^
Ad
vantages:
Curing under wett conditions, chemical bonding to hard dental tissues, no staining
Disadvantages
Short working time, difficult removal,
porous
Products
Ketac Endo (3M ESPE), Endion (VOCO)
Silicon based sealers
Polyvinylsiloxane (ev. in mixture with powdered guttapercha
Biocompatibility Hydrofillic
Root canal fillings - forms
-
> Points (Cones
)
^ Materials for injection > Plasti
c mate
Instruments
Others
Lentulo
> delivers pastes >1,5 - 2 mm ahead
> at most for Ca (OH)2
Compactors
Compactors
Not pointed
Vertical introduction
Vertical condensatuion - compaction
Filling technique
Cold
Warm
Warm lateral condensation
Vertical condensation
Difficul control of the working lengt Possible extrusion of the sealer
Injection of heated guttapercha
Fast
Possible extrusio
Warm
Vertical condensation
Thermafil
Fast
Risk of extrusion
Difficult to remove
Thermafil, Soft Core and others.