Introduction to fixed(new)


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Introduction to fixed(new)

  1. 1. Introduction to Fixed Prosthodontics Dr. Feras Aalam
  2. 2. Prosthodontics <ul><li>The dental specialty concerned with the making of artificial replacements for missing parts of the mouth and jaw. Also called prosthetic dentistry or prosthodontia. </li></ul><ul><li>Fixed prosthodontics is the specialized area of dentistry involved in the replacement of missing teeth with a cast prosthesis permanently cemented in place. </li></ul>
  3. 3. Indications for Fixed Prosthodontics <ul><li>One or two adjacent teeth are missing in the same arch. </li></ul><ul><li>The supportive tissues are healthy. </li></ul><ul><li>Suitable abutment teeth are present. </li></ul><ul><li>The patient is in good health and wants to have the prosthesis placed. </li></ul><ul><li>The patient has the skills and motivation to maintain good oral hygiene. </li></ul>
  4. 4. Contraindications for Fixed Prosthodontics <ul><li>Necessary supportive tissues are diseased or missing. </li></ul><ul><li>Suitable abutment teeth are not present. </li></ul><ul><li>The patient is in poor health. </li></ul><ul><li>The patient is not motivated to have the prosthesis placed. </li></ul><ul><li>The patient has poor oral hygiene habits. </li></ul><ul><li>The patient cannot afford the treatment. </li></ul>
  5. 5. Types of Cast Restorations <ul><li>Inlay </li></ul><ul><ul><li>Indirect restoration Covers a portion of the occlusal and proximal surface. (dose not cover the cusps) </li></ul></ul><ul><li>Onlay </li></ul><ul><ul><li>Indirect restoration Covers the proximal surfaces and most or all of the occlusal surface. (covers the cusps) </li></ul></ul><ul><li>Porcelain Veneers </li></ul><ul><ul><li>Thin shell-like covering placed to improve the appearance of anterior teeth. </li></ul></ul>
  6. 6. <ul><li>Full metal crown </li></ul><ul><ul><li>Completely covers the anatomic crown of an individual tooth. </li></ul></ul><ul><li>Three‑quarter crown </li></ul><ul><ul><li>Covers the anatomic crown of a tooth except for the facial portion. </li></ul></ul><ul><li>Porcelain‑fused‑to‑metal crown (PFM) </li></ul><ul><ul><li>Full metal crown with outer surfaces covered with a veneer of porcelain. </li></ul></ul>Types of Cast Restorations  cont’d
  7. 7. <ul><li>Fixed bridge </li></ul><ul><ul><li>A prosthesis for or more missing teeth within the same arch. </li></ul></ul>Types of Cast Restorations  cont’d <ul><li>Full ceramic crown </li></ul><ul><ul><li>Completely covers the anatomic crown of an individual tooth. </li></ul></ul>
  8. 8. Crown Fabrication <ul><li>1. Tooth Preparation, Including Build-Up </li></ul><ul><li>2. Impression </li></ul><ul><li>3. Temporization </li></ul><ul><li>4. Model (Cast) and Die Fabrication </li></ul><ul><li>5. Wax-Up </li></ul><ul><li>6. Investing and Casting </li></ul><ul><li>7. Crown Adjusting and Polishing </li></ul><ul><li>8. Clinical Try-In and Cementation </li></ul>
  9. 9. Restorations
  10. 17. Tooth Preparations
  11. 18. <ul><li>The tooth is prepared so the cast restoration can slide into place and be able to withstand the forces of occlusion. </li></ul><ul><ul><ul><li>Rotary instruments are used to reduce the height and contour of the tooth. </li></ul></ul></ul><ul><ul><ul><li>Hand cutting and rotary instruments prepare the gingival margins. </li></ul></ul></ul>Tooth Preparation
  12. 27. Build-Ups Pin Retained Preformed Posts Custom Cast Post and Core
  13. 28. Build-Ups Pin Retained
  14. 32. Build-Ups Preformed Posts
  15. 37. Build-Ups Custom Cast Post and Core
  16. 43. Impressions
  17. 44. <ul><li>Cord temporarily displaces the gingival tissue and widens the gingival sulcus so impression material can flow around all parts of the preparation. </li></ul><ul><ul><ul><li>Nonimpregnated </li></ul></ul></ul><ul><ul><ul><li>Impregnated </li></ul></ul></ul>Gingival Retraction and Tissue Management
  18. 46. <ul><li>Elastomeric impression materials are used to create these extremely accurate impressions. </li></ul>Final Impression
  19. 50. Temporaries <ul><li>Custom made acrylic </li></ul><ul><li>Relined polycarbonate crowns </li></ul><ul><li>Preformed metal crowns </li></ul>
  20. 51. Temporaries <ul><ul><ul><li>Custom made acrylic </li></ul></ul></ul>
  21. 55. Temporaries <ul><li>Relined polycarbonate crowns </li></ul>
  22. 58. Temporaries <ul><li>Preformed metal crowns </li></ul>
  23. 61. Model (Cast) and Die Fabrication
  24. 65. Series
  25. 78. Thank you