Tissue diplacement/ dentistry orthodontics

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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.

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Tissue diplacement/ dentistry orthodontics

  1. 1. Tissue DisplacementTissue Displacement INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. Tissue DisplacementTissue 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 & OBJECTIVESAIMS & 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
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  5. 5. METHODSMETHODS Mechanical Mechanochemical Surgical www.indiandentalacademy.com
  6. 6. Mechanical MethodsMechanical Methods Rubber damRubber dam Retraction cords - PlainRetraction cords - Plain Copper bandCopper band Temporary acrylic resin copingTemporary acrylic resin coping www.indiandentalacademy.com
  7. 7. Rubber DamRubber Dam www.indiandentalacademy.com
  8. 8. Retraction CordsRetraction Cords www.indiandentalacademy.com
  9. 9. • ClassificationClassification – Surface texture - Wet or Dry – Configuration - Twisted, knitted or plain – Surface finish - Waxed or unwaxed – Thickness (colour coded) - Black 000 (extra small) Yellow 00 (small) Purple 0 Blue 1 Green 2 Red 3 (extra large) – Chemical treatment - Plain or impregnated – Number of strands - Single or Double string www.indiandentalacademy.com
  10. 10. IDEAL REQUIREMENTSIDEAL 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
  11. 11. AdvantagesAdvantages (Plain cord)(Plain cord)  Tissue recovery is excellentTissue recovery is excellent  Provide pressure hemostasisProvide pressure hemostasis  Ease of manipulationEase of manipulation  Commonly usedCommonly used www.indiandentalacademy.com
  12. 12. DisadvantagesDisadvantages Poor in its ability to displace gingiva Trauma and recession from packing pressure www.indiandentalacademy.com
  13. 13. Copper BandCopper Band www.indiandentalacademy.com
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  18. 18.  Advantages – To retrieve the localised impression defect in multiple preparation Disadvantages – Incisional injury – Inaccuracy www.indiandentalacademy.com
  19. 19. Mechanochemical methodMechanochemical method • Chemical action + pressure pack- enlargementChemical action + pressure pack- enlargement of gingival sulcusof gingival sulcus • Materials used-retraction cord &Materials used-retraction cord & medicamentsmedicaments www.indiandentalacademy.com
  20. 20. • CriteriaCriteria – Effectiveness of gingival displacement andEffectiveness of gingival displacement and hemostasishemostasis – Absence of irreversible damage to gingivaAbsence of irreversible damage to gingiva – Paucity of untoward systemic effectsPaucity of untoward systemic effects www.indiandentalacademy.com
  21. 21. TechniquesTechniques • Single string techniqueSingle string technique • Deknatel technique / double stringDeknatel technique / double string techniquetechnique • Selective double stringSelective double string www.indiandentalacademy.com
  22. 22. ARMAMENTARIUMARMAMENTARIUM www.indiandentalacademy.com
  23. 23. Packing InstrumentsPacking Instruments www.indiandentalacademy.com
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  27. 27. DOUBLE CORD TECHNIQUEDOUBLE CORD TECHNIQUE www.indiandentalacademy.com
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  29. 29. Selective Double StringSelective Double String • Indications:Indications: – Spontaneous bleeding of gingival crevice isSpontaneous bleeding of gingival crevice is presentpresent • Techniques:Techniques: – Pre packing of extra thin cord only into the areaPre packing of extra thin cord only into the area of inflamed creviceof inflamed crevice – Followed by packing with thin cord which isFollowed by packing with thin cord which is removed during impressing making.removed during impressing making. www.indiandentalacademy.com
  30. 30. Epinephrine 0.1 & 8%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
  31. 31. Alum (100%)PotassiumAlum (100%)Potassium Aluminium SulphateAluminium 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 haemostasiswww.indiandentalacademy.com
  32. 32. Aluminium Chloride 5%-25%Aluminium Chloride 5%-25% Aluminium sulphate 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
  33. 33. Ferric Sulphate 13.3%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 – Transient tissue discolorationwww.indiandentalacademy.com
  34. 34. Ferric sub SulphateFerric sub Sulphate (Monsel’s Solution)(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
  35. 35. Zinc Chloride 8% & 40%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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