ROOT CANAL OBTURATING MATERIALS

FOR PRIMARY TEETH

Dept. Of PedodonticsGovt. College of Dentistry, indore

Made by :-Bhumika SharmaPallavi SehgalB.D.S. Final year (2015-16)

WHAT IS OBTURATION ?• The purpose of obturation phase of

endodontic treatment is to prevent the re-infection of root canals that has been biomechanically cleaned, shaped and disinfected by instrumentation, irrigation and medication procedure.

• It is essential that endodontic therapy must include sealing of the root canal system to prevent tissue fluids from percolating in the root canal and prevent toxic by – products from both necrotic tissue and microorganism regressing into the peri-radicular tissues.

FILLING OF THE PRIMARY ROOT CANALS

• Developmental , anatomic and physiologic differences between the primary and permanent teeth call for differences in the criteria for root canal filling material.

IDEAL REQUIREMENTS

• It should resorb at a similar rate as the primary root.

• It should be harmless to the periapical tissues and to the permanent tooth germ, if pressed beyond the apex it should resorb readily.

• It should have a stable disinfecting power.

• It should not be soluble in water.

• It should be inserted easily into the root canal and be removed easily if necessary.

• It should adhere to the walls of the canal and should not shrink.

• It should be radio opaque.

• It should not cause discoloration of the tooth.

• It should not coagulate any organic remnants in the canal.

SOME OBTURATING MATERIALS FOR PRIMARY

TEETH• Camphorated parachlorophenol (CPC) mixed

with calcium hydroxide.

• CPC mixed with zinc oxide.

• Formocresol mixed with zinc oxide eugenol (ZOE).

• Chlorhexidine mixed with ZOE.

• KRI paste.

• ZOE paste.

• ZOE mixed with sterile water.• Calcium hydroxide with sterile water.• Vitapex • Frank’s paste• Maisto’s paste• Leonardo’s paste iodoform• Walkhoff paste

MOST COMMONLY USED MATERIALS…

• Zinc oxide eugenol paste

• Calcium hydroxide

• Iodoform paste

ZINC OXIDE EUGENOL PASTE

• It is the most commonly used root canal filling material for primary teeth.

• Advantages - it has bactericidal effect. - It decreases tooth pain.

• Disadvantages

- It’s rate of resorption is slower than that of the primary tooth root. - Overfilling causes a mild foreign body reaction.

• Success rate is about 65%.

IODOFORM PASTE

• It is used as a component in :-

-KRI paste

-Maisto’s paste

-Vitapex

-Endoflas

• Advantages :-

- It resorbs rapidly.

-It has no undesirable effect on successor teeth.

• If material is extruded into periapical tissue, it is rapidly replaced by normal tissue.

• It has superior antimicrobial action.

• It does not set into hard mass and can be removed if re treatment is required.

• Success rate is about 84% .

CALCIUM HYDROXIDE

• It is generally not used in pulp treatment for primary teeth.

• It is used in the form of calcium hydroxide and iodoform mixture due to the following reasons:-

• It is found to be easy to apply.

• It resorbs at a slightly faster rate than that of the root.

• It has no toxic effects on permanent successor tooth.

• It is radio opaque.

• This mixture is a nearly ideal material for obturation of primary teeth.

KRI PASTE

Composition :- - Iodoform 80.8 %

- Camphor 4.86%

- Parachlorophenol 2.025 %

- Menthol 1.215 %

VITAPEX

Composition :- - Calcium hydroxide

- Iodoform

- Oily additives

WALKHOFF’S PASTE

Composition :- - Parachlorophenol

- Camphor

- Menthol

MAISTO’S PASTE

Composition :- - Zinc oxide 14 g

- Iodoform 42 g

- Thymol 2g

- Chlorophenol

- Camphor 3cc

- Lanolin 0.5 g

ENDOFLAS

• It is a root canal sealer material.• It prevents micro leakage.• Success rate is 70%.Composition - Zinc oxide 56.5% - Barium sulphate 1.63% - Iodoform 40.6% - Calcium hydroxide 1.07 % - Eugenol - Pentachlorophenol

COLLA COTE• It is a soft, white, pliable,

biocompatible sponge obtained from bovine collagen.

• It can be applied to moist or bleeding canals.

• It is an absorbable collagen barrier which prevents or diminish extravasations of root canal filling material during primary molar pulpectomies.

• Apart from endodontic therapy, it provides scaffold for bone growth.

• It can also be applied on wounds.

GUEDES-PINTO PASTE

Composition :- - Iodoform 0.30 g

- Calcium hydroxide 0.25 g

- Camphorated paramonochlorophenol 0.1 ml

FRANK’S PASTE

•  Composition

- Calcium hydroxide

- Camphorated parachlorophenol  ( CPC )

• Is well tolerated by the adjacent periapical tissue without any inflammation &  with  deposition of osteodentin.

GUTTA PERCHA

• It is not indicated for primary teeth because it is not a resorbable material.

PROPERTIES ZOE VITAPEX KRI PASTE

Rate of resorption

Slower than that of tooth

root

Slightly faster than that of tooth root

Faster than that of tooth

rootToxicity None None NoneOverfill resorption Occurs Occurs Occurs

Antiseptic action Present Present Present

Application EasyAdherence to canal wall Good Good Good

Removal Easy EasyRadio opacity

Radio opaque Radio opaque Radio

opaqueDiscoloration of tooth None None  None

THANK

YOU