Fixed prosthodontics

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uploaded by : Morteza Parmis
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Manila Central University
July 2011

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Fixed prosthodontics

  1. 1. <ul><li>Restoration of damaged portion of a tooth and the replacement of 1 or more missing teeth with an artificial substitute that is attached or permanently cemented to a prepared abutment tooth/teeth </li></ul>
  2. 2. <ul><li>Clinical exam </li></ul><ul><ul><li>Visual exam </li></ul></ul><ul><ul><li>Palpation </li></ul></ul><ul><ul><li>Percussion </li></ul></ul>
  3. 3. <ul><li>Mounted dx cast </li></ul><ul><ul><li>Tooth alignment </li></ul></ul><ul><ul><li>Edentulous area </li></ul></ul><ul><ul><li>Supraerupted tooth </li></ul></ul><ul><ul><li>Partially erupted tooth </li></ul></ul>
  4. 4. <ul><li>Radiograph </li></ul><ul><ul><li>Carious lesion </li></ul></ul><ul><ul><li>Bony architecture </li></ul></ul><ul><ul><li>Infrabony pocket </li></ul></ul><ul><ul><li>Roots </li></ul></ul><ul><ul><li>Lesion/ Tumor </li></ul></ul>
  5. 5. <ul><li>Px medical hx </li></ul><ul><ul><li>Complications from systemic conditions (allergies, cardiovascular problems) </li></ul></ul>
  6. 6. <ul><li>Carious lesion </li></ul><ul><li>Missing tooth </li></ul><ul><li>Periodontal pocket & depth </li></ul><ul><li>Existing restorations & their conditions </li></ul><ul><li>Mobility of tooth </li></ul><ul><li>Alignment & relationship of teeth </li></ul><ul><li>Oral hygiene </li></ul>
  7. 7. <ul><li>Small, irregular-shaped, sharp-edged diamond chips that are electroplated with nickel/chromium bonding medium to steel instrument blanks whose heads have been machined to desired shapes </li></ul>
  8. 8. <ul><li>Round-end tapered </li></ul>
  9. 9. <ul><li>Flat-end tapered </li></ul>
  10. 10. <ul><li>Long needle </li></ul>
  11. 11. <ul><li>Flame </li></ul>
  12. 12. <ul><li>Wheel </li></ul>
  13. 14. <ul><li>Best for producing precise preparation & smooth surfaces in enamel/dentin </li></ul><ul><li>Can cut through metal </li></ul>
  14. 15. <ul><li>Dentate/ Cross-cut </li></ul><ul><ul><li>Blades are interrupted by cuts across edge </li></ul></ul><ul><ul><li>Leaves deep, severe striations at right angles to the path of insertion of the preparation </li></ul></ul><ul><li>Nondentate </li></ul><ul><ul><li>Preferred because they leave a smooth surface finish </li></ul></ul>
  15. 16. <ul><li>For placement of grooves, box forms & isthmuses </li></ul><ul><li>Useful for planning vertical axial surfaces </li></ul>
  16. 20. <ul><li>Ante’s Law concerns the </li></ul><ul><ul><li>1. degree of tipping allowable in an abutment tooth </li></ul></ul><ul><ul><li>2. amount of curvature acceptable in the plan of occlusion </li></ul></ul><ul><ul><li>3. amount of increase in retentive factors with a full crown versus a three quarter crown </li></ul></ul><ul><ul><li>4. crown: root ratio </li></ul></ul><ul><ul><li>5. none of the above </li></ul></ul>
  17. 21. <ul><li>The chief disadvantage of hydrocolloid compared to the two rubber base impression materials is that it: </li></ul><ul><ul><li>1. requires a stock tray </li></ul></ul><ul><ul><li>2. is not as accurate </li></ul></ul><ul><ul><li>3. requires a dry field free of blood, saliva, etc. </li></ul></ul><ul><ul><li>4. is dimensionally unstable so it must be poured soon </li></ul></ul><ul><ul><li>5. takes longer to “set” (solidify) </li></ul></ul>
  18. 22. <ul><li>A temporary crown should fulfill the same general requirements as the final restoration except for: </li></ul><ul><ul><li>1. aesthetics </li></ul></ul><ul><ul><li>2. occlusal contact </li></ul></ul><ul><ul><li>3. durability </li></ul></ul><ul><ul><li>4. marginal adaptation </li></ul></ul><ul><ul><li>5. 1 and 2 </li></ul></ul>

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