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
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Hybridoma Technology ( Production , Purification , and Application )
Tissue diplacement /certified fixed orthodontic courses by Indian dental academy
1. Tissue Displacement
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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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
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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
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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
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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
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10. Advantages
(Plain cord)
Tissue recovery is excellent
Provide pressure hemostasis
Ease of manipulation
Commonly used
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11. Disadvantages
Poor in its ability to displace gingiva
Trauma and recession from packing
pressure
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17. Advantages
– To retrieve the localised impression defect in
multiple preparation
Disadvantages
– Incisional injury
– Inaccuracy
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18. Mechanochemical method
• Chemical action + pressure pack- enlargement
of gingival sulcus
• Materials used-retraction cord &
medicaments
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19. • Criteria
– Effectiveness of gingival displacement and
hemostasis
– Absence of irreversible damage to gingiva
– Paucity of untoward systemic effects
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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.
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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.
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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
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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
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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
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– Transient tissue discoloration
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
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