Root canal filling
lenka.roubalikova@tiscali.cz
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Ideal root canal filling (Grossman 1988)
Easy mixing Sufficient working time Good seal X- ray contrast Easy removal No shrinkage Long term volume stability No bacterial growing No permeability for fluids Biocompatibility No staining
lenka.roubalikova@tiscali.cz
Classification of root canal fillings
> Solid
> Semisolid
> Pastes
lenka.roubalikova@tiscali.cz
Guttapercha
Dried juice of the Taban tree (Isonandra percha) (gutta)
1,4 - polyisoprene
Crystallin structure (60%
Britde
lenka.roubalikova@tiscali.cz
Guttapercha
Beta phase
Alpha phase 42 - 49 °C
- plastic
Gamma phase 56 - 62°
Cooling- process
amorphous^
very slowly (less than 0,5°C) — alpha phase normal cooling— beta phase
lenka.roubalikova@tiscali.cz
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Sealers
Chemically curing olastic materials
Good adhesion to root canal walls as well as solid cones
lenka.roubalikova@tiscali.cz
Sealers
Zinc Oxide-Eugenol
Chloropercha
C alciumhydr oxide
Glasionomer Silicone
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Importance
Sealers
Filling of the spaces between the solid cones
Seal of the root canal filling
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Zinc - Oxid Eugenol
Good adhesivity, antimikrobial effect, cytotoxic, resorbable)
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Zink Oxid Eugenol sealers
Pulp Canal Sealer (Kerr, USA))
Tubuli- Seal (Kerr, USA)
v
Caryosan (Spofa Dental, CR)
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Chloropercha
Powder Canadian balsam Resins Guttapercha Zinc oxide
Liquid:
Chloroform
Resins
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Chloropercha
Good adhesivity Shrinkage Toxicity
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Calciumhydroxide sealers
Base (powder) Calcium hydroxide Zinc oxide
Other components and vehicula
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Kalciumhydroxidové sealery
Catalystr (paste) Zinc s tear at Titanium dioxide Baryum sulphate or
Eugenol,. Eukalypt
others
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Kalciumhydroxide sealers
> Increase of the healig potential of periapical tissues
> Antibacterial effect
> Easy manipulation
But!
resorbable if not homogeneus
Not suitable for the single cone technique
lenka.roubalikova@tiscali.cz
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Resins
^Rezorcin formaldehyd
> Epoxide
^Polyketone
^ Metacrylate
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Rezorcin — formaldehyd resins
N2, Endomethason, Riebler's paste, Foredent
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Epoxide resin
^Base (powder, paste) Bismuth oxid Titanium dioxide Hexametylentetramine (Silver)
^ Catalyst (liquide, paste) Bisphenoldiglycidylether
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Epoxid resin (advantages)
Long working time ^ Hydrophilic (good penetration) ^ Good adhesion to the root canal walls ^Volume stability ^No dissolution ^Antibacterial
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Epoxidové pryskyřice
^ Difficult removal
^ Staining
^ Initiatiory toxicity
No suitable for the single cone technique
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Polyketone
^ Base
Zinc oxide Bismuth phosphate Hexametylentetramine
> Liquid
Bisphenolglycidylether and other components
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Polyketon resins
Advantages Good adhesion No contraction No dissolution
Disadvantages High stickness Not removable
Products: Diaket, Diaket A (3M ESPE)
lenka.roubalikova@tiscali.cz
Methacrylate resins
Endo ReZ (Ultradent) - UDMA For injection — single cone technique Epiphany (Pentron) Bis- GMA, etoxy bif- GMA, hydrophilic bifunctional methacrylates
Calcium hydroxide, baryum sulphate, baryum glass silica.
Sealer in combination with Res Hon
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Glasionomer sealers
^Base (powder) Aluminium silicate glass
> Liquid
Poly acrylic acid, polymaleic acid, tartaric acid
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Glasionomer sealers
(Advantages and disadvantages)
Advantages:
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)
lenka.roubalikova@tiscali.cz
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Silicon based sealers
Polyvinylsiloxane (ev. in mixture with powdered guttapercha
Biocompatibility Hydro fillic
Further investigation desirable.
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Root canal filling
■ A cone inside the sealer — core material Guttapercha Resilon Silver cones Custom cones
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Root canal filling
Guttapercha
Trans isomer of polyisoprene 2 crystalline forms (alpha, beta) Beta — room temperature Alpha after heating Various process of cooling Extremly slow cooling: Aplha phase recrystalize. 65°.
Less shrinkage, more dimensionally stable
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Root canal filling
Guttapercha 20% gutta-percha 65% zink oxide 10% radio op acifiers 5% plasticizers
lenka.roubalikova@tiscali.cz
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Root canal filling
Guttapercha Cones: conventional and standardized sizes
Conventional: dimension of the tip and body
Standardized cones are designed to match the taper of the instrument.
lenka.roubalikova@tiscali.cz
Root canal fillings - forms
> Points (Cones)
> Materials for injection ^Plastic materials
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Instruments
Lentulo
Compactors
Compactors - carriers
Others
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Lentulo
> delivers pastes
> 1,5 - 2 mm ahead
> at most for Ca (OH)2
lenka.roubalikova@tiscali.cz
lenka.roubalikova@tiscali.cz
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Compactors
Plugger
Not pointed
Vertical introduction
Vertical condensatuion - compaction
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Filling techniques
Cold Warm
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Paste only
Shrinkage, difficult removal
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Warm lateral condensation
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Injection
Rychlá technika
Možná exttruze sealeru
Teplo
li
lín m
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Fáze plnění 2. Backfill
BeeFillem hermeticky uzavřeme a zaplníme zbývající část kanálku kulatého i oválného a uzavřeme postranní ramifikace ve vrchních částech k
lenka.roubalikova@tiscali.cz
Root canal filling Methods
lenka.roubalikova@tiscali.cz
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Filling
Always combination
Plastic material — sealer
Guttapercha
lenka.roubalikova@tiscali.cz
Paste only
lenka.roubalikova@tiscali.cz
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Cold techniques
Single cone technique
Lateral condensation
Guttapercha cone (cones) and sealer
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Compactor for lateral condensation
Spreader
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Vertical compaction
(condensation)
gutaperca
sealer
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Vertical compaction
Warm techniques - using heated guttapercha
Compactor - plugger
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Paste carrier -Lentulo
>Delivers the plastic material forward > 1,5 - 2 mm before the front >Most often for Ca (OH)2
lenka.roubalikova@tiscali.cz
Kompaktory
Kořenové cpátko - spreader
Hladký povrch, špička
Zasunutí do kořenového kanálku vertikálně
Later ální kondenzace gutaperčových čepů
lenka.roubalikova@tiscali.cz
Kompaktory
Kořenové cpátko
- Dlugger
Hladký povrch, rovné čelo
Zasunutí do kořenového kanálku vertikálně
Vertikální kondenzace kondenzace gutaperči
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Teplá laterální kondenzace
Horší kontrola pracovní délky
v
Časová náročnost Teplo
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Vertikální kondenzace
Obtížnější kontrola pracovní délky
Možná extruze sealeru
Teplo
1
lenka.roubalikova@tiscali.cz
njekční aplikace rozehřáté
gutaperči
Rychlá technika MožnjLextruze sealeru Teplo
m m iia
lenka.roubalikova@tiscali.cz
Root canal filling Methods
lenka.roubalikova@tiscali.cz
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Filling
Plastic material — sealer
Guttapercha
lenka.roubalikova@tiscali.cz
lenka.roubalikova@tiscali.cz
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Cold techniques
Single cone technique
Lateral condensation
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Compactor
Sperader
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Warm techniques
Vertical condensation
Injection
Thermafil
Thermomechanical condensation — Mc Spadden
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lenka.roubalikova@tiscali.cz
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Vertical compaction
(condensation)
guttapercha
sealer
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lenka.roubalikova@tiscali.cz
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Vertical compaction after injection
guttapercha
sealer
lenka.roubalikova@tiscali.cz
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Warm lateral condensation
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Injection of heated guttapercha
lenka.roubalikova@tiscali.cz
Thermafil
■
Guttapercha on plastic carrier is heated ina pecial oven and put into the root canal.
-
Compactor for vertical condensation - plugger
lenka.roubalikova@tiscali.cz
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Power driven filling - lentulo
> Delivers the paste forward
> 1,5 - 2 mm before the front
> Mostly for Ca (OH)2
lenka.roubalikova@tiscali.cz
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Compactors
lenka.roubalikova@tiscali.cz
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Compactors
Plugger
Straight front
Vertical action - condensation
lenka.roubalikova@tiscali.cz