221706863 Root Canal Sealers Orthodontic Courses by Indian Dental Academy

8/10/2019 221706863 Root Canal Sealers Orthodontic Courses by Indian Dental Academy

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ROOT CANAL SEALERS

INTRODUCTION

SEALERS :These are Cements / Resins / Semiliquid / Plastic-which are

used as binding agents to fill up the gap between root canal and

obturating material.

- It also fills up the irregularities, discrepancies, lateral canals and

accessor canals.

- It helps to achie!e a proper apical seal.

IDEAL REQUIREMENTS

- The requirements of a suitable sealers used for filling the dr

canal in con"unction with gutta-percha / sil!er cone are as

follows#

$% It should be T&C'(, when mi)ed to pro!ide good adhesion

between the filling material and canal wall when set.

*% It should pro!ide a +RTIC S& an e)cellent seal apicall

and laterall%.

0% Should be R&1I2-2P&34, so that it can be !isuali5ed in a

radiograph.

6% Should not shrin7 upon setting 1I8SI28&( ST&9%.

$


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:% Should not ST&I8 tooth structure.

;% Should be I8S249 in tissue fluids.

% Should not PR2?2' an immune response in peri-apical region

should be absorbable when e)truded%.

$@%It should be neither mutagenic nor carcinogenic.

$$%Should be easil mi)ed and introduced into the root canal.

$*%Should ST S2A( to ensure sufficient A2R'I8B TI.

$0%ilm thic7ness should be as minimum as possible.

$6%It should be S249 I8 common sol!ents if it is necessar to

remo!e the root canal filling.

FUNCTIONS

$% The e)ert BRICI1& / &8TI9&CTRI& acti!it after

the placement.

*% The form a 9281 between the filling material and the dentinal

walls acts as 9I81I8B &B8T%.

*


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0% The act as 49RIC&8TS when used in con"unction with

semisolid material.

6% The e)hibit R&1I2-2P&CIT( as it ma disclose the presence

of accessor canals, resorpti!e areas, root fractures and the shape

of apical foramen.

CLASSIFICATION

There are a number of classifications of root canal sealers which

can be discussed as#

I ACCORDING TO THEIR COMPOSITION [MESSING]

a) EUGENOL

b) NON-EUGENOL c) MEDICATED

i) Silver co!aii" ii) Silver Free

$% Ric7ettDsformula 'errDs

Sealer $>0$%

*% Procosol

Radio-opaque

sil!er cement

Brossman-

$>0;%

$% Procosol 8on-

staining B

cement

Brossman-

$>:=%

*% Brossm

anDs sealer

Brossman-

$>:$%

*% &+ *; $>:


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6


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II ACCORDING TO GROSSMAN#

$% Ginc-o)ide resin cements.

*% Ca2+%*cements.

0% Paraformaldehde cements.

6% Pastes.

III ACCORDING TO COHEN

Specification number :< classifies endodontic filling materials as

follows#

Tpe I H Cl $, Cl *

Tpe II H Cl $, Cl *, Cl 0

Tpe III H Cl $, Cl *, Cl 0, Cl 6

Type I :C2R Standardi5ed% au)iliar con!entional% points to be used

with sealer cements.

Class $ H etallic.

Class * H Polmeric.

Type II# Sealer cements to be used with core materials.

Class $ H Powder and liquid nonpolmeri5ing.

Class * H Paste and non-polmeri5ing.

Class 0 H Polmer resin sstems.

:


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Type III # illing materials to be used without either use materials /

sealer cements.

Class $ H Powder and liquid non-polmeri5ing.

Class * H Paste and paste non-polmeri5ing.

Class 0 H etal amalgams.

Class 6 H Polmers.

$ ACCORDING TO INGLE

- Cements.

- Pastes.

- Plastic.

$I ACCORDING TO CLAR%

- &bsorbable.

- 8on-absorbable

$II ACCORDING TO HART& F'(

1. Pastes and cements may be d!ded nt" # $%"&ps.

$% Ginc-o)ide eugenol based.

*% Resin based.

0% BP based.

6% 1entin adhesi!e materials.

:% aterials to which medicaments ha!e been added.

)amples of Gn2 are alread mentioned.

;


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'. Resn based:Consists of an epo) resin base which sets upon mi)ing

with an acti!ator. )amples H &+ H*;

- 1ia7et

- +dron.

(. )&ttape%c*a based # Pastes and cements based on gutta-percha

consists of solutions of gutta-percha in organic sol!ents well 7nown

products are#

- Chloropercha.

- ncapercha.

+. Dentn ad*es!e mate%a,s:&dhesi!e cements ha!e been tested in an

attempt to impro!e the qualit of sealers.

)amples# Canoacrlate cements.

- Blass ionomer cements.

- Polcarbo)late cement.

- Calcium phosphate.

- Composite materials.

#. Mate%a,s t" -*c* medcaments *a!e been added.

- These ma be di!ided into * groups#

i. Those in which strong disinfectants and antiphlogistics

ha!e been added in order to supports possible post-

operati!e pain.


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ii. Those in which Ca2+%* has been added with the

purpose of inducing cementogenesis and dentino-

genesis at the foramen, thus creating a permanent

biological seal. )amples#

- Paraformaldehde.

- Calcium hdro)ide.

In the first group of pastes, the supplemented disinfectant is

paraformaldehde and corticosteriod preparation is used as an

antiphlogistic.

The most popular commercial Ca2+%*containing cements are#

- Calcibiotic root canal sealer CRCS%.

- Sealape).

- 9iocale).

Antp*,"$sts :&gents which counteract inflammation.

INDI$IDUAL SEALERS

A SIL/ER CONTAININ)

) %err roo! *caal +ealer , Ricer!.+ For/0la#

Co/1o+i!io#

P"-de%:

Gn2 06-6$.*.

Precipitated sil!er *:-0@.@

2leo resins 0@-$;

=


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Thmol iodide $$-$*

>


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L0&d

2il of clo!es


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*. Branular appearance remains e!en after

spatulation is completed because of precipitated sil!er.

0. It completel sets and is inert within $:-0@

minutes, so BrossmanDs formula appeared in $>0;K with the

purpose of de!eloping a sealer that afforded more wor7ing time.

2) Proco+ol Ra3io1a40e * Silver Ce/e!

P"-de%:

Gn2 4SP 6:

Ppt sil!er $@

Canada balsam $@

To get rid of stain H use )lol to wash the pulp chamber after

condensation.

I3ica!io+#

$. aterial of choice for lateral canals.

*. or sil!er points.

0. ?ertical condensation of warm gutta-percha when

bul7 of material is required as a sealer.

$$


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Paca"i"#

- iquid in bottle dropper%.

- Premeasured powder in pellet form.

Mi5i"#

- $ pellet to $ drop $#$%.

&% S,!e% F%ee # BrossmanDs formula was re!ised to

e)clude &g.

) Proco+ol No-+!aii" Ce/e! , Gro++/a.+ E0"eol Ce/e!

6789)#

This sealer is re!ised b Brossman again in $>


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BrossmanDs sealer is used widel because it pro!ides good seal.

Co//ercial a/e+#

- Procosol non-staining sealer.

- RothDs sol.

- ndoseal.

Pro1er!ie+#

i% It has plasticit.

ii% It has slow setting time in the absence of

moisture and due to the presence of 8a borate anhdrate.

iii% It has good sealing potential and small

!olumetric change upon setting.

i!% Ginc ugenate is decomposed b +*2

through continuous loss of eugenol which ma7es Gn2K a wea7

unstable compound.

9ecause the use of BrossmanDs sealer in bul7 for retrofillings and

surgical root end repair is questionable.

This sealer if e)truded apicall gets absorped.

Di+a3va!a"e+#

$% Resin is of coarse particle si5e and unless the material in

spatulated !igorousl during mi)ing, an increased piece of resin

$0


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ma lodge on the walls of the canal and pre!ent the root-canal

filling from sealing at correct le!el.

Se!!i" Ti/e#

- This cement hardens in appro)imate * hours at 0


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Co/1o+i!io#

ase:

Gn2 H :

2leo resins H $=.: H *$.*:

9ismuth trio)ide H


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*% ?er low !iscosit e)trusion through apical foramen because

shorter spatulation time is recommended.

0% A.T. is less than 0@ minutes and e!en less in the presence of

moisture.

I3ica!io+#

i. In apical surger cases immediatel after filling. The

canal is o!erfilled intentionall with hea! condensation and the

e)cess remo!ed b curettage.

ii. or filling the last millimeter of the prepared canal

where the master cone ma not reach because of its great

lubricating propert.

>) Giac?.+ Sealer 6788@ ac? e! al)

Co/1o+i!io#

P"-de%:

Gno $@g

Tricalcium phosphate *g

9ismuth subnitrate 0.:g

9ismuth subiodide @.0g

agnesium o)ide hea!% @.:g

L0&d:

Canada balsam *@ml

2il of clo!es ;ml.

$;


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Pro1er!ie+#

a% edium AT.

b% inimum lubricating qualit.

c% inimum periapical irritation.

d% It is stic7 due to the presence of Canada balsam.

e% It should be mi)ed to smooth cream consistenc and

should string out at least one inch when spatula is raised

from the glass slab.

f% Increasing the thic7ness of the sealer lessens its lubricating

effect so this sealer is introduced when there is a

possibilit of o!er e)tension beond the confines of the

root canal.

g% It is pac7aged as powder and liquid in separate bottles.

A3va!a"e+#

a% It is germicidal.

b% ess peri-apical irritation.

c% It has light bod and thus does not defect the

small gutta-percha cones.

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d% It stas in position due to the tac7iness at the tip

of the cone.

Di+a3va!a"e#

a% 2dour of liquid.

I3ica!io+#

a% &ll lateral condensation methods especiall

when chance of o!erfilling is present.

b% Small cur!ed canals of minimum caliber

because of its light bod does not defect the small master

gutta-percha cone used in such canals.

Co!rai3ica!io+#

a% Ahen hea! lubrication is needed as with

short master cone.

Paca"i"#

Powder and liquid in separate bottles.

Mi5i"#

- i)ed to cream consistenc, mass drawn/ $ inch from raised

spatula.

- Thic7er for larger canals and for o!erfilling.

$=


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Summar of Gn2 based cements# 9asicall Gn2 based

cements ha!e an ad!antage of#

- ase of manipulation.

- &dhesion to dentinal walls and limited dimensional changes.

- Radioopaque, germicidal action, ample AT and minimal staining

e)cept &g containing PR2C2S2.

Di+a3va!a"e+#Pa irritation and not absorped easil from apical tissues.

Se!!i" Reac!io#It reacts because of a combination of phsical and

chemical reaction ielding a hardened mass of Gn2 embedded in a

matri) of long sheath li7e crstal of Gn eugenolate. an factors is

moistureK particle si5eK p+ etc. are factors that influence the setting

reaction.

- Tissue culture stud of Gn2 formulation are ctoto)ic.

- Inflammation at Pa region persists for ears.

- 4ntil e)cess Gn2 cement is phagoctosed.

NON-EUGENOL

1 DIA2ET

- It is a pol!inl resin Pol7etone%, a reinforced chelate formed

between Gn2 and 1i7etone.

$>


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- 1ia7et consists of a fine, pure white powder and a !iscous hone

coloured liquid.

- * drops of liquid J $ scoop of powder changing the ratio of

powder to liquid effects the hardness of the final set and

radioopacit%.

- 1ia7et hardens rapidl.

- S.T. is ;-= minutes on glass slab and faster in the root canal.

- 1ia7et is 7nown for its resistance to absorption.

- It is a superior to other sealers in tensile strength and resistance to

permeabilit.

- odification of apical cementum and al!eolar bone occurred

with glass o!erfilling.

- This cement is usuall used for 812SS24S IP&8T.

- 1ia7et showed a greater tendenc towards fibrous encapsulation

where as &+-*; tends to disintegrate into fine granules which

were phagoctosed.

' A34'5

This is an epo) resin recommended b S+R21R in $>:6.

P"-de%:

9ismuth o)ide H ;@

*@


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le)amethlene tetramine H *:

&g powder H $@

Titanium o)ide H :

L0&d:

9isphenol diglcidl ether

The formulation has been altered recentl with the remo!al of

sil!er as one of the constituents to pre!ent tooth discolouration.

PROPERTIES , AD$ANTAGES#

$. It has good adhesi!e propert.

*. &ntibacterial.

0. It contracts slightl while hardening.

6. ow to)icit and well tolerated b Pa tissues.

DISAD$ANTAGES#

$. Parasthesia ma occur following the use of

&+-*;, but partial reco!er occurs within $-* ears.

*. Inhibits leu7octe migration.

PAC%AGING

(ellow powder and !iscous resin, liquid and is mi)ed to a thic7

cream consistenc.

Its setting time# 0;-6= hours at bod temperature.

: to < das at room temperature.

*$


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TISSUE CULTURE STUDIES#

- The material was moderatel to se!ere to)ic when tested on

human epithelial cellsK blood, monoctes and lmphoctes etc.

H0/a +!03ie+#

- Aell tolerated b Pa tissue.

- )cess material in the P1 tends to become encapsulated.

- andibular parasthesia ma occur following filling.

EFFECTI$ENESS OF SEALER#

- It is an effecti!e sealing agent.

>) %LOROPER%A N'O' SEALER#

This formula is gi!en b 8borg and Inllin in $>;:.

Co/1o+i!io#

P"-de%:

Canada balsam H $>.;

Resin H $$.=Buttapercha H $>.;

Ginc o)ide H 6>

L0&d:

Chloroform

- It was first introduced in $>0>.

**


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- The powder is mi)ed with liquid chloroform.

- &fter insertion the chloroform e!aporates, lea!ing !oids.

- It is associated with a greater degree of lea7age than other

materials.

CHLOROPERCHA

- This is a mi)ture of gutta-percha and chloroform.

- This chloroform paste has been used b some clinicians as the

sole canal filling material.

- &s such the technique is improper because of the e)cessi!e

shrin7age of the filling after e!aporation of the chloroform.

INDICATIONS#

- Perforations.

- 4nusuall cur!ed canals.

- Canals with ledge formation.

- In con"unction with well fitted primar cone chloropercha can fill

accessor canals and root canal space.

MODIFIED CHLOROPERCHA METHODS

There are * modifications#

$. Mohnston H Callahan.

*. 8gaard H 2stb.

*0


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(o?+!o-Calla?a /e!?o3#

- The canal is repeatedl flooded with >: alcohol.

- Then dried with absorbent points.

- It is then flooded with Callahan resin, chloroform solution for *-0

minutes more chloroform is added if the paste becomes too thic7

b diffusion / e!aporation.

- & suitable gutta-percha is inserted and compressed laterall and

apicall with a string motion of the plugger until the gutta-percha

is dissol!ed completel in the chloroform solution in the root

canal.

- &dditional points are added one at a time and dissol!ed in the

same wa.

- )trusion should be pre!ented because freshl prepared

chloroform is to)ic before e!aporation of chloroform as

chloroform e!aporates H it shrin7s and apical seal is lost%.

N&GAARD OSTB&

- The canal walls are coated with 7loroper7a the primar cone

dipped in sealer is inserted apicall.

- Pushing partiall dissol!ed tip of the cone to its apical seal.

*6


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- &ddition cones dipped in sealer are pac7ed into the canal to

obtain satisfactor filling.

- 1& has banned the use of chloroform since it has a carcinogenic

potential.

) NEL& DE$ELOPED CaPO; T&PE SEALERS ARE#

$. Tetra calcium phosphate TeCP%.

*. 1iacalcium phosphate dihdrate 1CP1%.

0. If modified C II !ains and buffer solution

T1%.

6. T1-S-9uffer solution J *.; chondrotin

sulphate.

Co/1o+i!io#T1-S

P"-de%:

a. Tetracalcium phosphate.

b. 1ibasic Ca phosphate.

L0&d:

a. Citric acid.

b. 1ibasic 8aP26.

c. Chondrotin sulphate.

d. 1istilled +*2.

$. 9iocompatible.

*:


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- ow radioopacit.

- ow wetting abilit.

$% ENDOFLOSS # O ba+e3 /e3ica!e3 ce/e!.

Po


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H&DRON # ie?!erle a3 Li/ 67=)#

- It is a rapid setting hdrophilic, plastic material used as a root

canal sealers without the use of core.

- Boldman-&dron is a polmer of hdro)-ethl methacrlate

+&%.

- It is a!ailable as an in"ectable root-canal filling material.

- 9iocompatible and it conforms to the shape of the canal because

of its plasticit.

- Ahen it comes in contact with moisture, the gel absorbs +*2 and

swells.

- A.T. is ; to = minutes.

- ess radioopaque than gutta-percha.

- The sringe method ma7es it difficult to control the placement of

plastic gel accuratel and to control the formation of !oids within

its structure.

- ong-term studies showed that it causes Pa irritation and

inflammation with the acti!ation of macrophages.

- +dron is thi)otropic i.e. before polmeri5ation occurs it changes

from a gel to liquid for short-time.

*=


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- It can be remo!ed onl b burs i.e. peeso reamer.

ENDOFIL#

- & recentl introduced in"ectable silicone resin endodontic sealant

is 7nown as ee ndo-fill.

- It can be used with gutta-percha as the core material or H as a sole

sealant and filling material to be in"ected in the canal with a

pressure sringe.

End"6,,:a silicone elastomer H silicone monomer.

Cata,ystH silicone based radioopacifier H bismuth subnitrate.

&cti!e ingredients.

- +dro)l terminated dimethl polsilo)ane.

- 4ndeclenic acid.

- 9en5l alcohol.

- +drophobic amorphous silica $@-0@N particle si5e%.

Cata,ystH Tetra ethlorthosilicate poldimethl silo)ane#

- The mi)ed silicone has low wor7ing !iscosit with good

adaptation to the tooth structure.

- Bood penetration of accessor canals.

*>


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- It cures to a pale pin7 rubber solid resembling gutta-percha in

properties.

- ST H = to >@ minutes depending on the catalst amount O

catalst, faster setting, O shrin7age.

- The !oids can be detected on a radiograph and can be repac7ed.

- & moist cotton pellet is used for !ertical condensation and the

e)cess is remo!ed.

- +*2 accelerates the S.T.

AD$ANTAGES#

$. ase of preparation.

*. &d"ustable A.T.

0. ow wor7ing !iscosit.

6. Rubber consistenc.

:. It is not a resorbable material.

DISAD$ANTAGES#

$. Cannot be used in the presence of +*2*.

*. Canal must be absolutel dr.

0. Shrin7s upon setting but has an affinit for flowing into

open tubuli.

6. ndo-fills bonding abilit to the canal walls decreases if it

is not used within about *@ minutes of mi)ing.

0@


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BIOCOMPATIBILIT

- Silicon elastomers are low in to)icit and inert to tissues.

GLASS IONOMER CEMENT 6%ETAC-ENDO)

- Saito introduced the endodontic glass ionomer.

- +e suggested using u"i Tpe I luting cement to fill entire root-

canal.

- ater Pittford and Stewart wor7ed on this material to impro!e the

properties.

- Blass-ionomer cements are reaction product of an ion-leachable

glass powder and a polanion in aqueous solution.

- 2n setting the form a hard polsalt gel which adhere tightl to

enamel and dentin.

- 9ecause of their adhesi!e propert the are used as root-canal

sealers, pro!ided the are not ctoto)ic. It can be triturated and

in"ected onto root-canal.

AD$ANTAGES#

- It has best phsical qualities.

- It has best binding to dentin.

- ewest !oids.

- owest surface tension.

- 9est flow propert.

0$


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- ess ctoto)ic.

DISAD$ANTAGES#

- It cannot be remo!ed in case of re-treatment no 7nown sol!ent

for BI%.

- +owe!er Toronto / 2sract group has reported that 7etac-endo

sealer can be effecti!el remo!ed b H hand instruments, -

chloroform sol!ent followed b $ minute with an ultrasonic no.

*: file.

NOGENOL#

- This was de!eloped to o!ercome the irritating qualit of ugenol.

- The product is an outgrowth of non-eugenol periodontal pac7.

- This Gn2 non-eugenol cement nogenol ha!e been ad!ocated as it

considered to be less irritating sealer.

- It was found that after *6 hours all sealers showed considerable

inflammation.

- &+-*; hours nogenol was considerabl less irritating than the

other sealers.

- )pands on setting and impro!e its sealing efficac with time.

9ase is Gn2 with barium sulfate and !egetable oil.

- &ccelerator H hdrogenated rosin.

0*


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- ethl abietable.

- auric acid.

- Chlorothmol.

- Saliclic acid.

POL&CARBO&LATE CEMENTS#

- It consists of modified Gn2 powder and aqueous solution of

polacrlic acid.

- The cement has chelating action.

- 9inds to both enamel and dentin.

- 9ecause of its adhesi!e and antibacterial properties, the cement

has been tested as a root canal sealer.

- i7e an other sealer, this material also produces an

inflammator response when it is e)truded into Pa tissues.

- &pical seal is found to be inferior to other sealers.

AD$ANTAGES#

$. It bonds well to dentine.

*. &ntibacterial propert.

0. Compounds li7e fluoride and Ca2+%* can be added.

DISAD$ANTAGES#

00


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$. Special plastic plugger is required for insertion since it has great

adhesi!eness to steel instruments.

CALCIUM PHOSPHATE CEMENT#

- It has been de!eloped for use on e)posed root surfaces of

sensiti!e teeth.

- 9rowne $>=0% showed that this cement penetrated and occluded

the radicular dentinal tubules and enhanced hdro)apatite

formation.

- Aefel $>=6% found that it effecti!el plugged the apical foramen

and penetrated the dentinal tubules upto $@mm.

- The biocompatibilit of this cement in ndo-therap has not et

been established

C&ANOACR&LATE CEMENTS#

- These are composite tpe polmers that can be polmeri5ed to

hard products b the use of basic inorganic material that also

ser!e as fillers.

- & number of homologues including methl, ethlK n-butl,

isobutl and isopropl ha!e been formulated in dental cements.

- The ha!e been reported to be biocompatible.

MEDICATED CEMENTS#

06


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)amples#

Da7et A:

- Chemicall this sealer is similar to dia7et but it also contains the

disinfectant +&C+2R2P+8.

- It is one of the few medicated cements which does not contain

paraformaldehde.

TISSUE CULTURE STUDIES#

- 1ia7et is moderatel to)ic to cells.

- It has a strong ctoto)ic effect upto 6= hours after insertion.

HUMAN STUDIES#

- aterial is well tolerated b the Pa tissues o!erfillings with

1ia7et-& causes no inflammator reaction and are encapsulated

b fibrous connecti!e tissue%.

Pb tet%"8deH is to)ic to human organism and is of little benefit to the

properties of cement.

Pa%a6"%ma,de*ydeH hereb irritating and destructi!e to tissue.

C"%tc"ste%"dH are supposed to reduce post-operati!e pain.

0:


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L0&d:

ugenol.

2leum Rosae

2leum a!andulal

- The corticosteroids are now added to the cement separatel as

hdrocortisone powder / terra-cortil.

- The ob"ect of introducing formaldehde within the root-filling is

to obtain a continued release of formaldehde gas H which brings

prolonged fi)ation and antiseptic action.

TOICIT

- 9ecause of irritation is se!ere if forced into ma)illar sinus

mandibular canal-caused persisting, paresthesia.

- &PIC& S& H is better when compared to procosol, nongenol

and tubliseal and dia7et.

ENDOMETHASONE#

- The formation of this sealer is similar to 8*composition#

P"-de%:

Gn2 - $@@.@gm

9ismuth subnitrate H $@@.@g

1e)amethasone H @.@$>g

+drocortisone H $.;g

0


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Thmol iodide H *:.@g

Paraformaldehde H *.*@g

L0&d:

ugenol

- & pin7 antiseptic powder is mi)ed with eugenol.

- Sometimes endomehasone RC sealers gi!es rise to pain /

discomfort after ; to = wee7s of insertion.

- This occurs because the corticosteroid mas7s an inflammator

reaction until it is remo!ed from the area.

- Paraformaldehde is not resorbed equall, quic7l and the

smptom of the inflammator reaction becomes apparent.

SPAD#

- 'nown for one !isit non-irritant radioopaque filler and sealer.

- It is a resorcinol formaldehde resin supplied as a powder and *

liquids.

Co/1o+i!io#

P"-de%:

Gn2 H g

9a Sulphate H$0.@@g

Titanium dio)ide H ;.0@g

Paraformaldehde H 6.


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Ca2+%* H @.>6g

Phenl mercuric borate H @.$;g

L0&d:

Clear% ormaldehde solution H =


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- Pa within Pa infections H because it is thought that sterili5ing

affect accelerates healing.

- )trusion H bone necrosis.

IODOFORM PASTE#

- If alone / in combination with ether substances has been used as a

cement / as sealer with core materials.

- Aal7hoff $>*=%.

- It is a resorbable paste.

Consists of# ;@ parts of iodoform.

6@ parts of solution H 6: parachlorphenol,

&ntiseptic H 6> of camphor

; menthol.

COMMERCIALL& aa %RI * 1a+!e'

- Ahen the pulp is necrotic, the apical foramen is intentionall

widened during preparation and paste is deliberatel filled into

the region during filling.

- If a sinus is present, paste is pushed beond the canal until it

e)trudes through the sinus.

- arge Pa lesions, paste is used to fill the Rl and also as antiseptic

dressing.

6@


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- It is not necessar to insert a guttpercha/sil!er points as core

filling, if it is used, it should not touch the ape).

- It stimulates the Pa tissues and e!en accelerates bone formation.

- The filling material in the peri ape) is remo!ed b the action of

phagoctosis and direct drainage to the associated lmphnodes.

DISAD$ANTAGE#

$% Pa irritation during construction of post crown so call has

to be filled with non-absorbable material according to

aws $>:>% H apical quarter of the canal with a section of

gutta-percha J paste and the remaining with non-

resorbable material.

*% 1iscoloration.

0% Cannot be used in patients who ha!e sensiti!it to iodine.

RIEBLER.S PASTE#

P"-de%:

Gn2ormaldehde

9a sulphate.

Phenol.

6$


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L0&d:

ormaldehde.

Sulphuric acid.

&mmonia.

Blcerine.

M&NOL CEMENT#

P"-de%:

Gn2.

Iodoform.

Rosin.

9ismuth subnitrate.

L0&d:

ugenol.

Creosol.

Thmol.

- These cements are used, without core materials and are

introduced b means of lentulospiral / in"ection de!ice.

APPLICATION OF A SEALER

- Sealer can be placed b #

- Reamer.

- entulo-spiral.

6*


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- &s a sealant in con"unction gutta-percha.

- &s a root canal filling material.

- Pure Ca2+%* can be used / J saline solution.

- p+$*.0 to $*.:.

- Its use is based on the assumption that there is formation of hard

structures / tissues at the apical foramen.

- The al7alinit of Ca2+%*, stimulates the induction of

minerali5ed tissue.

- Ca2+%* ma be effecti!e as an I8TRI treatment but should

ser!e as a permanent RC filling material because it ma

disintegrate if lea7age occurs.

- Some Gn2 cements ha!e been modified b incorporating

Ca2+%*.

- Ca2+%* sealers are considered superior to Gn2 cements.

9A SEALAPE ; 2ERR COMPAN


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Co/1o+i!io#

- 9ase consists of Gn2 with Ca2+%*.

9utl ben5ene

Sulfonamide.

Gn stearate.

- Cata,yst 9a sulphate.

Titanium dio)ide H radioopaque.

Resin.

Isobutl saliclate and &crocil R>


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L0&d:

ugenol

ucalptol.

- CRCS is a Gn2 eucalstol sealers to which Ca2+%* has been

added for its osteogenic effect.

- CRCS H is powder # iquid combination.

- CRCS H 0 das to set full in either dr / humid en!ironment.

It shows ma little +*2 sorption i.e. quite stable.

- The setting time, solubilitK compressi!e strength and other

properties of these and Ca2+%* sealers were compared with

PR2C2S2.

- The found that sealape) showed a tpical beha!iour on its

pronounced !olume e)pansion water absorption and change in

radioopacit with time.

6B) LIFE

- & Ca2+%* liner and pulp capping material and sealer.

- Similar composition to sealape).

6C) $ITAPE

- Mapanese ha!e introduced.

- Components are iodoform and silicone oil.

6;


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NEER SEALERS

$. ndofloss.

*. &ppetite root canal sealer.

0. RCS containing tetra-calcium dicalcium phosphate and $

chondrotin sulphate.

1 ENDOFLOSS:

- Recentl introduced sealer consisting of P# formulation.

P"-de%:

Gn2.

Iodoform.

Ca2+%*

9aS26

L0&d:

ugenol.

Parachlorophenol.

- It is 5inc o)ide based medicated cement.

- i)ing is similar to procosol Gn2 sealer%.

- S.T. H 0@-6: minutes.

- 9iocompatible.

6=


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- Induces se!ere inflammator reaction in 6= hours and graduall

reduced after 0 months.

- Se!ere to)icit along with coagulation necrosis was obser!ed

which is attributed to the presence of iodoform parachlorophenol.

' APPETITE RCS: 3


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BIOSEAL#

Sealing abilit of a new-hdro)apatite containing endodontic

sealer using lateral condensation and thermatic composition of gutta-

percha in !itro M2, ?ol. **K 8o. 6# &pril >;.

H3ro5#

$. Is assumed to influence the apical healing.

*. It ma effect the sealing abilit of the cement because of its

composite structure additi!e did not effect the sealing abilit.

BIOSEAL # PCS'

IM ># Ca2+%* RCS # e!aluation of p+ Ca ion

concentration and conducti!it.

Sealape) +ighest p+K ionic Ca and total Ca !alues.

+gienic CRCS IInd.

1entspl - Sealer *;IInd

?i!adent &pe)it IIIrd.

ffect of sealer thic7ness on long-term sealing abilit # a *-ear

follow up stud.

Gn2Roth Thic7 laers O lea7age than thin laers.

PCS H 8T

&+-*;K 'etac ndoK Sealape)Thic7 and thin laers.

Documents

221706863 Root Canal Sealers Orthodontic Courses by Indian Dental Academy