Tissue diplacement /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in

continuing dental education , training dentists

in all aspects of dentistry and offering a wide

range of dental certified courses in different

formats.

Indian dental academy provides dental crown &

Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit

www.indiandentalacademy.com ,or call
0091-9248678078

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Tissue diplacement /certified fixed orthodontic courses by Indian dental academy

  1. 1. Tissue Displacement INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. Tissue Displacement • Change in the form or position of tissues as a result of pressure • Deflection of marginal gingiva away from a tooth • Synonyms – Gingival retraction – Gingival displacement www.indiandentalacademy.com
  3. 3. AIMS & OBJECTIVES • Reflect gingiva and produce enlargement or dilate gingival sulcus • To obtain 0.2 - 0.4 mm of horizontal displacement of marginal gingiva • To achieve 0.5 mm of vertical exposure of unprepared portion of tooth www.indiandentalacademy.com
  4. 4. METHODS Mechanical Mechanochemical Surgical www.indiandentalacademy.com
  5. 5. Mechanical Methods  Rubber dam  Retraction cords - Plain  Copper band  Temporary acrylic resin coping www.indiandentalacademy.com
  6. 6. Rubber Dam www.indiandentalacademy.com
  7. 7. Retraction Cords www.indiandentalacademy.com
  8. 8. • Classification – – – – Surface texture Configuration Surface finish Thickness (colour coded) - Wet or Dry Twisted, knitted or plain Waxed or unwaxed - – Chemical treatment – Number of strands - Black 000 (extra small) Yellow 00 (small) Purple 0 Blue 1 Green 2 Red 3 (extra large) Plain or impregnated Single or Double string www.indiandentalacademy.com
  9. 9. IDEAL REQUIREMENTS  Safe locally , and systemically  Effective for its intended use  Effects should be spontaneously reversible  Absorbent  Provide hemostasis  No chemical injury to gingival tissues www.indiandentalacademy.com
  10. 10. Advantages (Plain cord)  Tissue recovery is excellent  Provide pressure hemostasis  Ease of manipulation  Commonly used www.indiandentalacademy.com
  11. 11. Disadvantages Poor in its ability to displace gingiva Trauma and recession from packing pressure www.indiandentalacademy.com
  12. 12. Copper Band www.indiandentalacademy.com
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  17. 17.  Advantages – To retrieve the localised impression defect in multiple preparation Disadvantages – Incisional injury – Inaccuracy www.indiandentalacademy.com
  18. 18. Mechanochemical method • Chemical action + pressure pack- enlargement of gingival sulcus • Materials used-retraction cord & medicaments www.indiandentalacademy.com
  19. 19. • Criteria – Effectiveness of gingival displacement and hemostasis – Absence of irreversible damage to gingiva – Paucity of untoward systemic effects www.indiandentalacademy.com
  20. 20. Techniques • Single string technique • Deknatel technique / double string technique • Selective double string www.indiandentalacademy.com
  21. 21. ARMAMENTARIUM www.indiandentalacademy.com
  22. 22. Packing Instruments www.indiandentalacademy.com
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  26. 26. DOUBLE CORD TECHNIQUE www.indiandentalacademy.com
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  28. 28. Selective Double String • Indications: – Spontaneous bleeding of gingival crevice is present • Techniques: – Pre packing of extra thin cord only into the area of inflamed crevice – Followed by packing with thin cord which is removed during impressing making. www.indiandentalacademy.com
  29. 29. Epinephrine 0.1 & 8% • Recommended time & Mechanism of action – 5-10 min Pronounced vasoconstriction  Advantages – Good displacement & haemostasis • Tissue Recovery – Fair Disadvantages – Systemic reactions – Contraindications – Cardiovascular disease, hyperthroidism, hypersensitivity to epinephrine – Epinephrine syndrome – Increased heart rate, respiratory rate and BP. www.indiandentalacademy.com
  30. 30. Alum (100%)Potassium Aluminium Sulphate • Recommended time & Mechanism of action – 10 – 20 min. Precipitation of protein and inhibiting transcapillary movement of plasma protein  Advantages – Minimal tissue loss – Extended working time • Tissue Recovery – Good Disadvantages – Less displacement and haemostasis www.indiandentalacademy.com
  31. 31. Aluminium Chloride 5%-25% Aluminium sulphate 25% • Recommended time & Mechanism of action – 10 mins. Weak Vasoconstrictor  Advantages – Minimal tissue loss – Good haemostasis • Tissue recovery – Good Disadvantages – Local tissue destruction > 10%concentration www.indiandentalacademy.com
  32. 32. Ferric Sulphate 13.3% • Recommended time & Mechanism of action – 1 – 3 minutes  Advantages – Good tissue response – Compatible with Aluminium Chloride • Tissue recovery – Good Disadvantages – Not compatible with epinephrine www.indiandentalacademy.com – Transient tissue discoloration
  33. 33. Ferric sub Sulphate (Monsel’s Solution)  Recommended time & Mechanism of action 3 mins  Advantages Good displacement  Tissue recovery Good Disadvantages Highly acidic and messy to work www.indiandentalacademy.com
  34. 34. Zinc Chloride 8% & 40%  Advantages – Good displacement • Tissue recovery – 8% - Fair – 40% - Fair Disadvantages – Tissue necrosis and permanent tissue injury www.indiandentalacademy.com
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