Fluid Control & Soft Tissue Management Quiz
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Questions and Answers

What is Magic Foam Cord made of?

  • Polystyrene with a copper catalyst
  • Polyethylene with a silicon catalyst
  • Polyvinyl chloride with a gold catalyst
  • Polydimethylsiloxane with a tin catalyst (correct)

    • What caused the fourfold volumetric expansion of Magic Foam Cord?

  • Release of gas from the reaction (correct)
  • Reaction between base and catalyst
  • Introduction of heat
  • Addition of water

    • What is used to apply pressure to the expanding foam?

  • Hollow cotton roll (correct)
  • Metal spatula
  • Wooden stick
  • Plastic syringe

    • Which material provides excellent hemostasis and some gingival retraction according to the text?

    <p>Racegel (A)</p> Signup and view all the answers

    How long should the material be left inside the gingival sulcus during cordless retraction?

    <p>5-10 minutes (D)</p> Signup and view all the answers

    What is the advantage of cordless retraction technique according to the text?

    <p>'Non-traumatic, non-invasive tissue management and excellent hemostasis' (C)</p> Signup and view all the answers

    'Surgical techniques' are considered what according to the text?

    <p>'True retraction techniques' (A)</p> Signup and view all the answers

    'Cordless retraction technique' is mainly used for what kind of dental procedure?

    <p>'Fixed prosthodontic impressions' (D)</p> Signup and view all the answers

    What is the primary purpose of using a retraction cord?

    <p>To physically push the gingiva away from the finishing line (B)</p> Signup and view all the answers

    What is the purpose of rotary gingival curettage (gingettage)?

    <p>To expose the finish line of the preparation (D)</p> Signup and view all the answers

    Which of the following is NOT a common hemostatic solution used to impregnate retraction cords?

    <p>Zinc oxide (B)</p> Signup and view all the answers

    When is rotary gingival curettage advised to be used?

    <p>Only when there is adequate attached gingiva (B)</p> Signup and view all the answers

    What is the recommended duration for leaving the retraction cord in place?

    <p>10 minutes (D)</p> Signup and view all the answers

    What is a disadvantage of the gingettage technique?

    <p>It has poor tactile sense (C)</p> Signup and view all the answers

    How deep should the sulcus be for gingettage to be performed?

    <p>3 mm (D)</p> Signup and view all the answers

    Which instrument is typically used to pack the retraction cord into the gingival sulcus?

    <p>Fischer packing instrument or Ash no.6 (A)</p> Signup and view all the answers

    What does gingettage involve?

    <p>Removing a portion of the sulcular epithelium to expose the finish line (D)</p> Signup and view all the answers

    What is the purpose of drying the field with air before placing the retraction cord?

    <p>To prevent saliva contamination during the procedure (A)</p> Signup and view all the answers

    Why should rotary gingival curettage be done only on healthy gingival tissue?

    <p>To prevent damage to the periodontium (A)</p> Signup and view all the answers

    What is the recommended action if the tooth is excessively desiccated during the retraction procedure?

    <p>No specific action is mentioned in the text (B)</p> Signup and view all the answers

    What is the purpose of squeezing out the excess astringent solution from the cord before placement?

    <p>To prevent excessive tissue shrinkage (C)</p> Signup and view all the answers

    After removing the retraction cord, what is the expected state of the gingival tissue?

    <p>Expanded and flexible (B)</p> Signup and view all the answers

    What is the purpose of using a knitted retraction cord?

    <p>All of the above (D)</p> Signup and view all the answers

    Which color-coded retraction cord is recommended for anterior teeth with minimal crevicular space?

    <p>Black and Yellow (D)</p> Signup and view all the answers

    What is the primary advantage of knitted cords over braided cords?

    <p>Knitted cords afford greater inter-thread space (B)</p> Signup and view all the answers

    Which size of retraction cord is recommended for bicuspids?

    <p>Purple (0) and Blue (1) (D)</p> Signup and view all the answers

    What is the purpose of using a double cord technique?

    <p>To achieve better retraction in areas with greater tissue bulk (D)</p> Signup and view all the answers

    Which size of retraction cord is classified as 'SMALL'?

    <p>000 and 00 (B)</p> Signup and view all the answers

    Which of the following statements about retraction cords is true?

    <p>Knitted cords form an interlocking chain of tiny loops, making them easier to pack and displace tissue (B)</p> Signup and view all the answers

    Which type of retraction cord is recommended for use in areas with greater tissue bulk?

    <p>Knitted cords (A)</p> Signup and view all the answers

    Why should the operative site be isolated during dental procedures?

    <p>To obtain a dry clean operating field (D)</p> Signup and view all the answers

    What is a common source of fluid in the oral cavity during dental procedures?

    <p>Saliva (C)</p> Signup and view all the answers

    Why is moisture control important during dental procedures?

    <p>To protect from swallowing foreign bodies (C)</p> Signup and view all the answers

    What is the average flow rate of saliva while chewing different foods?

    <p>3.6 +/- 0.8 ml/min (A)</p> Signup and view all the answers

    Which fluid source contributes to gingival crevicular fluid in the oral cavity?

    <p>Gingival tissues inflammation (B)</p> Signup and view all the answers

    What does isolating the operative site help in preventing?

    <p>Contamination (B)</p> Signup and view all the answers

    How does moisture control impact adhesion of dental materials?

    <p>It improves adhesion effectiveness (D)</p> Signup and view all the answers

    What is a function of gingival crevicular fluid in the oral cavity?

    <p>Moisture control during procedures (A)</p> Signup and view all the answers

    Saliva flow rate is 3.6 mL per minute while chewing different foods.

    <p>True (A)</p> Signup and view all the answers

    A high speed rotary cutting instrument consumes 50 mL per minute.

    <p>False (B)</p> Signup and view all the answers

    Gingival crevicular fluid flow rate is 0.25 µL per minute.

    <p>False (B)</p> Signup and view all the answers

    Moisture control in dental procedures does not impact adhesion of dental materials.

    <p>False (B)</p> Signup and view all the answers

    Isolating the operative site is only done for patient comfort.

    <p>False (B)</p> Signup and view all the answers

    Saliva flow rate during chewing foods is always constant for all individuals.

    <p>False (B)</p> Signup and view all the answers

    Preventing contamination is not a reason for isolating the operative site during dental procedures.

    <p>False (B)</p> Signup and view all the answers

    Gingival bleeding during tooth preparation is not a potential source of fluid in the oral cavity during dental procedures.

    <p>False (B)</p> Signup and view all the answers

    It is recommended to moisten the impregnated cord before placing it in the sulcus.

    <p>True (A)</p> Signup and view all the answers

    Twisting non-braided cords tightly makes them harder to place.

    <p>False (B)</p> Signup and view all the answers

    The instrument should be angled away from the tooth during cord placement to avoid displacement.

    <p>False (B)</p> Signup and view all the answers

    Over-packing and repeated use of displacement cord should be avoided during cord placement.

    <p>True (A)</p> Signup and view all the answers

    It is easier to start cord placement inter-proximally because it offers more sulcular depth than facial or lingual areas.

    <p>True (A)</p> Signup and view all the answers

    Moisture control is not important in dental procedures involving retraction cord placement.

    <p>False (B)</p> Signup and view all the answers

    A second instrument holding the cord does not aid in subsequent placement during the cord placement procedure.

    <p>False (B)</p> Signup and view all the answers

    Gentle and firm pressure should be applied to the cord during placement apical to the margins of preparation.

    <p>True (A)</p> Signup and view all the answers

    Rubber dam is the most effective method for moisture control when all margins are supra-gingival.

    <p>True (A)</p> Signup and view all the answers

    Cotton rolls are only placed in the sublingual area for moisture control.

    <p>False (B)</p> Signup and view all the answers

    Cotton roll holders are used to enhance visibility during dental procedures.

    <p>True (A)</p> Signup and view all the answers

    Absorbing cards are made of foam material for controlling saliva flow.

    <p>False (B)</p> Signup and view all the answers

    Multiple Isolation Techniques are performed when a rubber dam cannot be used for optimal saliva control.

    <p>True (A)</p> Signup and view all the answers

    Cotton rolls are only used in the maxillary arch for moisture control.

    <p>False (B)</p> Signup and view all the answers

    Rubber dam eliminates the need for any other moisture control methods during dental procedures.

    <p>False (B)</p> Signup and view all the answers

    Absorbing cards are more effective than cotton rolls in controlling saliva flow in dental procedures.

    <p>False (B)</p> Signup and view all the answers

    Biologic width acts as a barrier against microorganisms to protect the periodontium.

    <p>True (A)</p> Signup and view all the answers

    A minimum of 2mm space between the restoration margin and the alveolar bone is required for proper healing.

    <p>False (B)</p> Signup and view all the answers

    The 3mm space needed for biologic width consists of 2mm of junctional epithelium.

    <p>False (B)</p> Signup and view all the answers

    The location, fit, and finish of restorative margins do not impact periodontal health.

    <p>False (B)</p> Signup and view all the answers

    Gingival retraction aids in providing enough thickness of the impression material at the area of the finishing line.

    <p>True (A)</p> Signup and view all the answers

    Digital impression techniques eliminate the need for careful isolation and retraction.

    <p>False (B)</p> Signup and view all the answers

    Using a double cord technique is recommended for preserving biologic width.

    <p>False (B)</p> Signup and view all the answers

    Preserving biologic width does not play a role in maintaining normal values of the periodontium.

    <p>False (B)</p> Signup and view all the answers

    In a double cord technique, the first cord is thick.

    <p>False (B)</p> Signup and view all the answers

    The second cord is removed immediately before impression making in a double cord technique.

    <p>True (A)</p> Signup and view all the answers

    The double cord technique is indicated when there is minimal to no gingival fluid exudates present.

    <p>False (B)</p> Signup and view all the answers

    One of the advantages of the double cord technique is to control gingival hemorrhage.

    <p>True (A)</p> Signup and view all the answers

    In the double cord technique, the initial cord is removed immediately before impression making.

    <p>False (B)</p> Signup and view all the answers

    Using two cords in the double cord technique requires that there should be around 2mm of intact tooth structure remaining between them.

    <p>False (B)</p> Signup and view all the answers

    The primary purpose of a thick second cord in the double cord technique is to achieve vertical tissue displacement.

    <p>False (B)</p> Signup and view all the answers

    A key advantage of the double cord technique is to reduce the tendency of the gingival cuff to recoil.

    <p>True (A)</p> Signup and view all the answers

    Study Notes

    Gingival Retraction and Fluid Control in Dentistry

    Magic Foam Cord (Coltène/Whaledent)

    • A polydimethylsiloxane with a tin catalyst
    • Fourfold (x4) volumetric expansion when used in the sulcus
    • Expanding foam allows for apically directed flow and enlargement of the gingival sulcus, making it suitable for impression making

    Cordless Retraction Materials

    • Examples: Racegel (Septodont), Traxodent (Premier), GingiTrac (Centrix)
    • Provide excellent hemostasis and gingival retraction
    • Used for fixed prosthodontic impressions

    Surgical Technique (Radical or Surgical Means)

    • Involves removing part or all of the overlying gingival tissue to expose the finish line of the tooth
    • More invasive and should only be used in cases with adequate attached gingiva
    • Examples:
      • Rotary Gingival Curettage (Gingetage): a toughing technique involving simultaneous curettage of the inner lining of the gingival sulcus and preparation of the tooth sub-gingivally
      • Criteria to fulfill for Gingetage: no bleeding on probing, sulcus depth of at least 3 mm
      • Disadvantages of Gingetage: poor tactile sense, potential damage to periodontium

    Retraction Cords

    • Classification:
      • According to chemical treatment: plain cord, impregnated cord
      • According to configuration: twisted, knitted, braided
      • According to thickness (diameter): different colors indicate different sizes (e.g., black - 000, yellow - 00, purple - 0, blue - 1, green - 2, red - 3)
    • Advantages of knitted cord:
      • Affords greater inter-thread space than braided cord
      • Forms an interlocking chain of tiny loops, making it easy to pack and stays in place
      • Compresses upon packing, then expands for tissue displacement

    Isolation and Fluid Control

    • Importance of isolation: dry, clean operating field, easy access and visibility, improved properties of dental materials, patient and operator protection, improved operating efficiency
    • Fluid sources in the oral cavity:
      • Saliva (parotid and submandibular and sublingual glands)
      • Inflamed gingival tissues/iatrogenic soft tissue damage
      • Water/dental materials (rotary instruments, triplex syringe, etchants, irrigant solutions)
      • Gingival crevicular fluid (sulcular fluid)
    • Techniques for fluid control and isolation:
      • Rubber dam
      • Cotton rolls
      • Cotton roll holder
      • Absorbing cards

    Biologic Width

    • A minimum of 3 mm space is required between the restoration margin and the alveolar bone to permit adequate healing and maintain a healthy periodontium
    • Consists of 1 mm of supraalveolar connective tissue, 1 mm of junctional epithelium, and 1 mm of sulcular depth
    • Importance of preserving biologic width in restorative dentistry: prevents penetration of microorganisms into the periodontium, maintains periodontal health

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    Fluid Control & Soft Tissue Management PDF

    Description

    Test your knowledge on moisture control, fluid sources of the oral cavity, and soft tissue management in dentistry. Topics include saliva flow rates, causes of gingival bleeding, and fluid sources during dental procedures.

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