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K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
K. class v glass ionomer
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K. class v glass ionomer

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  • 1. GLASS IONOMER
  • 2.  These tooth-coloured materials were introduced in 1972 for use as restorative materials for anterior teeth (particularly for eroded areas, Class III and V cavties).
  • 3.  bond chemically to dental hard tissues and release fluoride for a relatively long period
  • 4.  restorationof carious lesions in low- stress areas such as smooth-surface and small anterior proximal cavities in primary teeth
  • 5. GICs are commonly classified into four principal types:
  • 6. GICs are commonly classified into four principal types:Conventional Glass Ionomer Cements
  • 7. GICs are commonly classified into four principal types:Conventional Glass Ionomer CementsHybrid Ionomer Cements (Also known as Light or Chemical Cured Resin-modified Glass Ionomer or Dual-cured Glass Ionomer Cements)
  • 8. Tri-cure Glass Ionomer Cements
  • 9. Tri-cure Glass Ionomer CementsMetal-reinforced Glass Ionomer Cements
  • 10. Composition and preparation
  • 11. Composition and preparationGIC Powder
  • 12. Composition and preparationGIC Powder powder is an acid-soluble calcium fluoroaluminosilicate glass (similar to that of silicate) but with a higher alumina-silicate ratio that increases its reactivity with liquid.
  • 13.  fluoride
  • 14.  fluoride Lanthanum, Strontium, Barium or Zinc Oxide additives provide radioopacity.
  • 15.  the raw materials are:
  • 16.  the raw materials are: Silica 41.9%
  • 17.  the raw materials are: Silica 41.9% Alumina 28.6%
  • 18.  the raw materials are: Silica 41.9% Alumina 28.6% Aluminum Fluoride 1.6%
  • 19.  the raw materials are: Silica 41.9% Alumina 28.6% Aluminum Fluoride 1.6% Calcium Fluoride 15.7%
  • 20.  the raw materials are: Silica 41.9% Alumina 28.6% Aluminum Fluoride 1.6% Calcium Fluoride 15.7% Sodium Fluoride 9.3%
  • 21.  the raw materials are: Silica 41.9% Alumina 28.6% Aluminum Fluoride 1.6% Calcium Fluoride 15.7% Sodium Fluoride 9.3% Aluminum Phosphate 3.8%
  • 22. GIC Liquid
  • 23. GIC Liquid Originally, the liquids for GIC were aqueous solutions of polyacrylic acid in a concentration of about 40 to 50%.
  • 24. GIC Liquid Originally, the liquids for GIC were aqueous solutions of polyacrylic acid in a concentration of about 40% to 50%.
  • 25.  Theliquid consists of acid is in the form of co-polymer with itaconic, maleic or tricarboxylic acids.
  • 26.  Tartaric acid is also present in the liquid. It improves handling characteristics and increases the working time, but it shortens the setting time.
  • 27. Manipulation:
  • 28. Manipulation:1. Surface of the prepared tooth must be clean and dry
  • 29. Manipulation:1. Surface of the prepared tooth must be clean and dry2. The consistency of the mixed cement must allow complete coating of the surface irregularities
  • 30. 3. Excess cement must be remove at the appropriate time
  • 31. 3. Excess cement must be remove at the appropriate time4. The surface must be finished without excessive drying
  • 32. 3. Excess cement must be remove at the appropriate time4. The surface must be finished without excessive drying5. Protection of the restoration surface must be ensured to prevent cracking or dissolution.
  • 33.  The conditions are similar for lutting applications, except that no surface finishing is needed.
  • 34. Setting Time:
  • 35. Setting Time: GIC TYPE 1 - 5-7minutes
  • 36. Setting Time: GIC TYPE 1 - 5-7minutes GIC TYPE 2 - within 10minutes
  • 37. Advantages:
  • 38. Advantages: Inherent adhesion to tooth structure
  • 39. Advantages: Inherent adhesion to tooth structure High retention rate
  • 40. Advantages: Inherent adhesion to tooth structure High retention rate Little shrinkage and good marginal seal
  • 41. Advantages: Inherent adhesion to tooth structure High retention rate Little shrinkage and good marginal seal Fluoride release and hence caries inhibition
  • 42.  Biocompatible
  • 43.  Biocompatible Minimal cavity preparation required hence easy to use on children in and suitable for use even in absence of skilled dental manpower and facilities (such as in ART)
  • 44. Disadvantages
  • 45. Disadvantages: Brittle
  • 46. Disadvantages: Brittle Soluble
  • 47. Disadvantages: Brittle Soluble Abrasive
  • 48. Disadvantages: Brittle Soluble Abrasive Water sensitive during setting phase.
  • 49.  Some products release less fluoride then conventional GIC
  • 50.  Some products release less fluoride then conventional GIC Not inherently radiopaque though addition of radiodense additives such as barium can alter radiodensity
  • 51.  Some products release less fluoride then conventional GIC Not inherently radiopaque though addition of radiodense additives such as barium can alter radiodensity Less aesthetic then composite
  • 52. Uses:
  • 53. Uses: Type I - For luting cements
  • 54. Uses: Type I - For luting cements Type II - For restorations
  • 55. Uses: Type I - For luting cements Type II - For restorations Type III - Liners and bases
  • 56. Uses: Type I - For luting cements Type II - For restorations Type III - Liners and bases Type IV - Fissure sealants
  • 57. Uses: Type I - For luting cements Type II - For restorations Type III - Liners and bases Type IV - Fissure sealants Type V - Orthodontic Cements
  • 58. Uses: Type I - For luting cements Type II - For restorations Type III - Liners and bases Type IV - Fissure sealants Type V - Orthodontic Cements Type VI - Core build up

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