ROOT CANAL SEALERS..................pptx

its a presentation about the root canal sealers which is used at the time of root canal treatment

1. ROOT CANAL SEALERS Presented by: B. Priscilla Tejaswini IV BDS

2. CONTENTS Introduction Ideal root canal sealers requirements Functions Classification Zinc oxide eugenol sealer Manipulation Methods of placement

3. INTRODUCTION The purpose of sealing root is to prevent periapical exudates from diffusing into unfilled part of the canal, to avoid re entry and colonization of bacteria and to check residual bacteria from reaching the periapical tissues. So to accomplish a fluid tight seal, a root canal sealer is needed. Though sealer is used only as adjunct material in obturation, it affects prognosis of endodontic treatment.

4. Requirements of an ideal root canal sealers 1. Tacky when mixed so as to provide good adhesion between it and canal wall. 2. Able to create hermetic seal. 3. Radiopaque so as to be visible on radiographs.(according to ANSI/ ADA specification no.57, all endodontic sealers should be at least 2mm more opaque than dentin or bone). 4. Very fine powder particles for optimal mix. 5. Non staining to tooth structure. 6. Bacteriostatic or at least do not encourage bacterial growth. 7. Insoluble in tissue fluids but soluble in a common solvent so that it can be removed from root canal. 8. Non irritating to peri radicular tissues.

5. . Stains caused by some sealers are ; Grossman’s cement – orange red strain Diaket and Tubli seal- mild pink discoluration

6. classifications of root canal sealers Silver containing Ex: Kerr, procosol radiopaque Sliver free Ex: Grossman’s sealer, tubliseal Diaket Nogenol Hydron Glass ionomer Diaket -A Iodoform Mynol cement Calium hydroxide Based on composition

7. According to Grossman According to ingle Zinc oxide resin cement Calicum hydroxide cements paraformaldehyde cements pastes CEMENTS PASTES PLASTICS

8. Zinc oxide eugenol sealers . Setting reaction : it sets because of a combination of physical and chemical reaction An hardened mass of zinc oxide embedded in matrix of long sheath like crystals of zinc eugenolate is produced. most of the ZOE sealer cements are cytotoxic and involve inflammatory response in connective tissue. Different types of zinc oxide eugenol sealers are Kerr or Rickert’s formula Procosol radiopaque silver cement Grossman’s sealer Wach’s sealer Tubliseal Endoflas

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11. Manipulation of sealers 1. Sealer should be mixed as per manufacture’s instructions 2. An ideal consistency is where the mixed sealer “pulls’’ about 2cm off the surface of the glass slab when the flat surface of the spatula is pulled away from the surface of the glass slab. 3. Also when the mixture can be picked up and held with the spatula upside down without dropping off for 10sec. 4. Ideal consistency allows ample clinical working time and minimal dimensional change. 5.The setting time and dimensional changes are directly related to the proportion of powder to liquid.

12. Methods of sealers placement 1.Coating the master cone and placing the sealer in canal with a pumping action. 2.Placing the sealer in the canal with a lentulo spiral. 3.Placing the sealer on master apical file and turning the file counterclockwise. 4.Injecting the sealer with special syringes. 5. Sealer placement technique vary with the status of apical foramen. a) if apex is open only apical one third of master cone is coated with sealer to prevent its extrusion into periapical tissues. b) if apex is closed any of the described techniques can be used .

13. Thank you .