ROOT CANAL SEALERS IN ENDODONTIC URPOSE

1. ROOT CANAL SEALERS
SK EKRAMUR RAHMAN,
FINAL YEAR BDS
REGD. NO. – 1928 OF 2014- 15
DEPARTMENT OF CONSERVATIVE DENTISTRY&
ENDODONTICS
NORTH BENGAL DENTAL COLLEGE & HOSPITAL

2. Root canal sealers are used in conjunction
with biologically acceptable semisolid or
solid obturating materials to establish an
adequate seal of the root canal system.
INTRODUCTION

3. INABS
ENCE
OFROOT
CANAL
S
EALANT
Applicationofrootcanalsealant preventsthe bacterial growthand
Penetration

4. FUNCTIONS OF ROOT
CANALSEALERS
Serves as a filler for canal irregularities and minor
discrepancies between the root canal wall and core
filling material.
To obturate the lateral canals
Acts as lubricant
Enhances the possible attainment of impervious seal
Can assist in microbial control.
For radiopacity

5. IDEAL
REQUIREMENTS:
Should provide an excellent seal when set.
Should produce adequate adhesion between
itself , the canal walls, and the filing material.
 Should be radiopaque.
 Should be nonstaining.
 Should be dimensionally stable.

6. Should be easily mixed and introduced into the
canals.
 Should be easily removed if necessary.
 Should be insoluble in tissue fluids.
Should be bactericidal or discourage bacterial
growth.
Should be non irritating to the peri radicular
tissues.
 Should be slow setting to ensure sufficient working.

7. CLASSIFICATIONOFCURRENTLYEMPLOYEDROOTCANALSEALANTS:(GROSSMAN)
I. Zincoxideeugenolbased sealers
a) Grossmans’s formula
b) Roth’s801
c) Tubliseal
II. Calciumhydroxidebased sealers
a) Sealapex
b) Apexit
III. Glassionomerbased sealers
IV. Resinbased sealers
a) Ah plus
b) Ah26
c) Epiphany
d) Diaket

8. ZINC OXIDE-
EUGENOL CEMENTS:
zincoxide-eugenol cements modified for
endodontic use
Mixing vehicle is mostly eugenol or in
combination with other liquids likecanada
balsam.
Setting time adjusted for adequateworking
time.
Radiopacity 4-5mm of aluminium.

10. GROSSMAN’SSEALER
Modified grossman’sformula-1974
Most advocated –provides good seal.
COMPOSITION:
POWDER
Zinc oxide - 40parts
Staybellite resin- 30 parts
Bismuth subcarbonate- 15 parts
Barium sulphate- 15parts
Sodium borate
Anhydrous- 1 part
LIQUID
Eugenol

11. PROPERTIES:
Plasticity and slow setting time-sodiumborate
anhydrate.
Good sealing potential and smallvolumetric
change
Apical extrusion gets absorbed.
DISADVANT
AGES:
Resin is of coarse particlesize
SETTINGTIME:
Hardens approximately 2hrs 37degree Cin canal.

12. MANIPULATION:
Sterile glass slab with spatula,2 or 3dropsof
liquid-small increments of cement powder,2
smooth creamyconsistency.
T
otest proper consistency- drops test and
string out test
Commercially available as Roth’
s 801 root
canal sealer

13. WACH’SSEALER
POWDER
Zinc oxide 10gms
Tricalciu
m
phophate
2gms
Bismuth subnitrate 3.5gms
Bismuth subiodide 0.3gms
Heavy magnesium
oxide
0.5gms
LIQUID
Canada balsam 20ml
Oil of cloves 6ml

14. INDICATION:
All the lateral condensation methods, when chance of overfilling
is present.
CONTAINDICATIONS:
When heavy lubrication isneeded.
PROPERTIES:
Medium working time.
Medium lubricatingquality
Minimal periapical
Sticky (canada balsam)
Should be mixed to smooth creamyconsistency
Should string out atleast 1inch when spatularaised
Icrasing thickness of sealer lessens lubricating effect,soindicated
when there is possibility of overextension
Available aspowder and liquid in separate bottles.

15. ADV
ANT
AGES:
Germicidal ,less periapical irritation ,stays in position.
DISADV
ANT
AGES:
Odour of theliquid.

16. Slightmodificationmadeinrickert’sformula
2pastesystem–base andcatalyst
COMPOSITION:
BASE
Zinc oxide 57-59%
Olea resins 18.5-21.5%
Bismuth trioxide 7.5%
Thymol iodide 3.75-5%
Oil and waxes 10%
LIQUID
Eugenol
Polymerised resin
Annidalin
SETTINGTIME
20 mins- glassslab
5min-root canal
TUBLI SEAL

17. ADV
ANT
AGES:
Easy to mix
Extremely lubricated
Does notstain
Expands after setting.
DISADV
ANT
AGES:
Irritant to periapicaltissues
Very low viscosity –extrusion through apicalforamen.
Working time less than 30mins andeven shorter in presence
of moisture.
INDICATIONS:
when apical surgery to be performed immediately
after filling
Because of great lubricating property –good choice
when it becomes difficult for a master cone to reach
last mm ofpreparation.

18. ADV
ANT
AGES:
Ease of manipulation
Adhesion to dentinal walls, onlyslight
dimensional change.
Radiopaque ,germicidal property,minimal
staining, ample workingtime
DISADV
ANT
AGES:
All are cytotoxic and inflammatory response is
seen.
Not easily absorbed from apicaltissues.
ADVANTAGEAND DISADVANTAGE
OFZOE SEALERS:

19. Non –eugenolcalcium hydroxidepolymeric resin
root canalsealer.
100% humidity takes 3weeks to reach final set,
never sets in dryatmosphere.
Sealer expands whilesetting

20. APEXIT
Available insyringes.
COMPOSITION:
BASE WEIGHT%
Calcium
hydroxide/calcium
oxide
36.9
Hydrated
collophonium
54.0
Fillers and other
auxiliary
materials.
9.1
CA
T
AL
YST WEIGHT%
Disalicylate 47.6
Bismuth
hydroxide/bismu
th carbonate
36.4
Fillers and other
auxiliary
materials
16.0

21. ADVANT
AGES:
Excellentbiological tolerance.
Easytomix
Radiopaque
Hard setting

22. Less tissue irritation ,lowtoxicity
Because of adhesivequalities
recommended as sealers.
Itis not used nowadays because of
difficulty to remove from rootcanal.

23. ADVANTAGES:
Best physical qualities, best bonding to dentin,
fewest voids, best flow , strengthen the roots.
DISADVANTAGES:
Cannot be removed from the root canal.

24. RESIN BASED ROOT CANAL
SEALERS
DIAKET:
Polyvinyl resin and reinforcedchelate formed between zincoxide
and diketone
Finewhite powder and viscous honey coloured liquid, 2drops of
liquid mixed with 1scoop ofpowder
Hardens rapidly about 6-8 mins on glass slab even more rapidly on
root canal
Known for its resistance to absorption ,superior to other sealers in
tensile strength and resistance topermeability.
Mildinflammatory reaction occurs when over filled.

25. AH26
Epoxy resin sealers characterised by reactive epoxidering
polymerised by the breaking of thisring.
PROPERTIES:
Good adhesiveproperty.
Good flow
Antibacterial contracts slightly whilehardening
Lowtoxicity
Addition of hardener makes curedresin chemically andbiologically
inert
Consists of yellow powderand viscous resin liquid mixed to hick
creamyconsistency
Slow setting 36-48 hrs at body temperatureand 5-7 days at room
temperature.
Long setting time and materialfluidity
Nocrackingor separation from the dentinal walls
It releases formaldehyde duringsetting.

26. AHPLUS
Epoxy resin based sealer,2 componentpaste.
Easy to mix and adapt closely o the root canal.
Minimal shrinkage upon setting ,long termdimentional
stability
Mix equal volume of pasteA and pasteB.
Setting time 8hours at 37 degreeC.
Spatulas, mixing slab and instrumentsimmediately
cleaned with alcohol oracetone.

27. ADV
ANT
AGES:
Excellent biocompatibility
Easy handling andapplication
Outstanding physicalproperties
Excellent radiopacity
Suitable for all oburationtechniques.
ADVERSEREACTIONS:
Reversible acute inflammation of the oral mucosawhen
it is exposed tothe unset paste.

28. APPLICATION
OF ROOT
CANAL
SEALERS
MEASURINGTHEWORKING
LENGTH
COMPLETE DRYING
OFCANAL
APPLICATION USING
PAPERPOINTOR
MASTERCONE
EXCESSMATERIALIS
REMOVED

30. REACTIONSTOTHE
OBTURATINGMATERIALS:
Ifthematerialisextrudedintotheperiradiculartissueit canbehighly
irritatingandmayreducetheprobabilityof healingbyabout25%.
Zincoxideeugenoltypeofsealersareprobablyirritating becauseofeugenol.
Epoxyresinsealersaremorebiocompatible.
Allthefilingmaterialsshouldbeconfinedtotheroot canal.