Endodontic materials

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Presentation On Endodontic Materials
REFERENCE: McCabe Applied Dental Materials

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Endodontic materials

  1. 1. ENDODONTIC MATERIALS
  2. 2. What are Endodontic Materials? Used to obturate the root canal system of teeth when the pulp tissue has been destroyed either as a consequence of trauma or subsequent to tooth decay involving the pulp and infection of the pulp tissue.
  3. 3. OBJECTIVES OF ROOT CANAL TREATMENT 1. The root canals are to be cleaned and shaped within 0.5mm of the apical constriction area 2. The canals are to be obturated three dimensionally with a combination of biocompatible materials 3. The obturated root canals are to be provided with a coronal seal to prevent leakage and infection
  4. 4. Materials Used During Endodontics 1. IRRIGANTS AND LUBRICANTS: Used during canal preparation 2. INTRACANAL MEDICAMENTS: Materials placed within the canal between clinical visits to maintain the canal in a disinfected state 3. OBTURATING MATERIALS: The bulk fill material and sealant used during canal obturation. 4. Used during endodontic surgery and repair of internal damage within the root canal system.
  5. 5. IRRIGANTS AND LUBRICANTS 1. Flush the debris from the root canal 2. Disinfect the canal. PROPERTIES: •Able to dissolve/disrupt tissue and debris •Non-toxic •Low surface tension •Able to lubricate instruments •Able to sterilize or at least disinfect the canal •Able to remove the smeared layer from the surface
  6. 6. SODIUM HYPOCHLORITE CHLORHEXIDIENE GLUCONATE EDTA SALINE IRRIGANTS AND LUBRICANTS
  7. 7. SODIUM HYPOCHLORITE 2-10%: It is irritant to vital tissues which may cause ulceration of soft tissues of oral cavity, Use with RUBBER DAM ISOLATION If access material is incorporated beyond the apex it may cause inflammation of bone Should not be used in insufficient crown or incomplete root formation or perforation CHLORHEXIDIENE GLUCONATE 0.2%: Less irritant as compared to hypochlorite ETHYLENE DIAMINE TETRA-ACETATE (EDTA): Gel form It is used in the cases of calcified canals
  8. 8. INTRACANAL MEDICAMENTS PARAMONOCHLOROPHENOL (PMCP) NON-SETTING Ca(OH)2 POLYANTIMICROBIAL PASTE
  9. 9. • PARAMONOCHLOROPHENOL (PMCP): Short lived as denatured in the presence of calcium Currently no clinical indication for it’s use • NON-SETTING Ca(OH)2: pH 11 Potent antimicrobial effect Mild irritant if crossed beyond the apex Induces root and bone formation, used in apexification Can be left in place for several weeks • POLYANTIMICROBIAL PASTE: Polyantibiotic Corticosteroid + sulphonamide + tetracycline Decreases pulpal inflammation to facilitate access into the pulp in the next visit Dissolves in 5-7 days
  10. 10. OBTURATION MATERIALS Conventional CONTEMPORARY SILVER BULK FILL with THIN SEALANT AMALGAM MEDICATED PASTES
  11. 11. OBTURATION MATERIALS CONVENTIONAL MATERIALS 1. SILVER: Used in the form of prefabricated cones Not always fits to the anatomy of root canals Silver undergoes corrosion One way is to fill the canal completely with silver The silver may also be used to fill only the apical 5-6mm of the canal while the rest of the canal is filled with some other material
  12. 12. 2. DENTAL AMALGAM: Used in the root canal as filling material May be used in orthograde or retrograde root canal fillings Needs specialized instrumentation
  13. 13. 3. MEDICATED PASTES: Paraformaldehyde Based N2, SPAD, Endomethasone •Sets hard •Difficult to remove •Highly toxic to periapical areas if crossed apex IODOFORM BASED: •Resorbable •Can be placed as temporary dressing
  14. 14. CONTEMPORARY MATERIALS Bulk fill materials: used to fill the bulk space of canal •Natural Rubber Gutta percha •Synthetic polyester resin based materials Sealants: used to seal the minor left over spaces •GIC •ZnO Eugenol •Calcium Hydroxide •Resin + dentine bonding System
  15. 15. BULK FILL MATERIALS 1. GUTTA PERCHA: Latex derivative “Transpolyisoprene” 2 crystalline forms : α and ß Composition: Transpolyisoprene 19 – 22% ZnO 60 – 75% Resins Waxes Antioxidants Metallic Salts
  16. 16. BULK FILL MATERIALS 2. POLYESTER RESIN: Resilon® Thermoplastic synthetic polyester Barium Sulphate Bismuth Chlorate Bioactive Glass
  17. 17. CANAL SEALANTS 1. To fill the spaces between the bulk fill materials 2. Improve their adaptation and adhesion to the walls of canal
  18. 18. PROPERTIES: •Tissue tolerance •Insoluble in tissue fluids •Dimensional stability •Hermetic seal •Radiopaque •Bacteriostatic/ bateriocidal •Adhesion to canal walls •Easy to mix •Non staining •Slow setting •Easily removed if required
  19. 19. MATERIALS USED: •GIC •ZnO Eugenol •Calcium Hydroxide •Resin + Dentine Bonding Agents
  20. 20. GIC: •Its similar in composition to luting agents •Sets rapidly ZnO EUGENOL: (Grossmann’s Formula) Composition: Powder: ZnO, stabellite resin, Bismuth subcarbonate, Barium Sulphate, Sodium Borate Liquid: Eugenol
  21. 21. Resin Based Sealants: Powder: • Bismuth Oxide 60% • Hexamethylene triamine 25% • Silver 10% • Titanium dioxide 5% Liquid: • Epoxy bisphenol resin Silver causes dentinal staining and formaldehyde causes tissue irritation
  22. 22. MATERIALS FOR ROOT CANAL REPAIR AND PERIRADICULAR SURGERY MTA (mineral trioxide aggregate): • Tricalcium silicate • Dicalcium silicate • Tricalcium aluminate • Tetracalcium alumino ferolite • Calcium sulphate • Bismuth oxide ( portland cement + Bismuth oxide)
  23. 23. USES OF MTA: •Filled in defect for repair •Root canal and filling material •Apexification (causes cementogenesis) •Infected Canals (antimicrobial effect)
  24. 24. METHODS OF OBTURATION COLD PACKING: Material placed in canal and compressed against the walls with instruments HEAT PACKING: Material softened using heat into or outside the canal to make proper seal
  25. 25. METHODS OF OBTURATION COLD PACKING: Insertion of GP cones into the canal Lateral condensation with help of instrument called spreader Canal sealed with the help of sealants
  26. 26. METHODS OF OBTURATION HEAT PACKING: Method 1: GP softened outside the mouth and then inserted Method 2: GP inserted into the canal and softened with help of friction devices eg. “Archimedean Screw” Method 3: GP inserted into the canal and softened with help of heating devices like “Heat Probes”
  27. 27. Materials Irrigants and Lubricants NaOCL Chlorhexidiene Saline EDTA Intracanal Medicaments PMCP CaOH2 Polyantimicrobial Paste Obturating Materials Conventional SILVER, AMALGAM, MEDICATED PASTE Contemporary Bulk Fill with GP, POLYESTER RESIN Canal Sealants GIC, ZNO EUG, Ca(OH)2, RESIN+DBA In Endo Surgery MTA
  28. 28. Thanks! For more visit the following links Facebook: www.facebook.com/e.dental.official Website: ourdentalmaterials.webs.com Slide share: http://www.slideshare.net/drdentist

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