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Introduction to dental cements dental material

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Introduction to dental cements dental material

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Introduction to dental cements dental material

  1. 1. DENTAL CEMENTS Dental cements, lecture 1
  2. 2. Generally cement is a substance used to glue two solid bodies (e.g. Contracting Cement is used to glue building bricks to each other) Introduction to Dental cements In Dentistry,,,, There are many different applications of cements
  3. 3. APPLICATIONS OF DENTAL CEMENTS 1. Cementation (Luting) of indirect restorations such as crowns, bridges, inlays and onlays e.g. ( Zinc phosphate, polycarboxylate, glass ionomer, and resin cements) 2. Cavity Bases under metallic restorations to protect the pulp against thermal shock e.g. (Zinc phosphate, polycarboxylate, glass ionomer, modified ZOE) 3. Cavity Liners protecting the pulp against chemicals leaching from restorative materials or even cement bases e.g. (ZOE,and Calcium hydroxide) Introduction to Dental cements
  4. 4. 4. Pulp capping material isolating and protecting the pulp from the surrounding media e.g. (Calcium hydroxide) 5. Interim filling material restoring tooth cavities temporally e.g. (ZOE,modified ZOE, and zinc phosphate) 6. Esthetic restoratives restoring tooth cavities with material having the same color shade especially in anterior region e.g. (Silicate, Glass ionomer, Resin modified glass ionomer cements) 7. Cementing root canal posts and core build-up e.g. (Zic phosphate, Glass ionomer,and Resin cements) Introduction to Dental cements APPLICATIONS OF DENTAL CEMENTS (Cont.d)
  5. 5. 8. Root Canal Sealer, Seals spaces between root canal filling material and canal wall or even between the filling cones themselves. e.g. (ZOE, and Glass Ionomer cements) 9. Cementation of orthodontic bands and bracket bonding e.g. (Zinc phosphate, polycarboxylate and resin cements) 10. Surgical and periodontal packs e.g. (ZOE) APPLICATIONS OF DENTAL CEMENTS (Cont.d) Introduction to Dental cements
  6. 6. CLASSIFICATION OF DENTAL CEMENTS ACCORDING TO THE SETTING MECHANISM I. Cements set via acid- base reaction e.g. ZOE, zinc phosphate, polycarboxylate,… II. Cements set via polymerization reaction e.g. Resin-based cements III. Cements set via both mechanisms (Dual-cured) e.g. Resin-modified G.I. Introduction to Dental cements
  7. 7. ACID-BASE REACTION CEMENTS Zinc Oxide Alumino silicate glass Phosphoric acid Polyacrylic acid Eugenol ZOE & Ca(oH)2 Zinc polycarboxylate Glass ionomerSilicate Zinc phosphate

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