51 Questions
What are the sources of moisture fluid in dental procedures?
Saliva, blood, gingival crevicular fluid, and water from dental materials
What is the significance of moisture control in dental procedures?
To gain access and visibility during operations, such as for crown preparation
What are the types of retraction cords used in dental procedures?
Gingival retraction cords and astringent agents
What is the purpose of recognizing the different methods for fluid control and soft tissue management?
To understand the methods for retracting gingival tissues, including electro-surgery
What material is used to achieve retraction without packing a cord?
Foam-like paste
How is improved displacement achieved when using the paste for retraction?
By applying pressure with a hollow cotton roll
What is the main advantage of radiosurgery over electrosurgery?
Minimal lateral heat generation
What is the contraindication for using lasers in surgery?
Patients with electronic medical devices
What is the purpose of rotary gingival curettage?
Limited removal of epithelial tissue
What is the function of aluminum chloride in the retraction paste?
Astringent & hemostatic agent
What is the role of the diode laser in radiosurgery?
Provides cutting and/or coagulation using radio waves
What is the effect of using radiosurgery compared to conventional methods?
More effective in hemostasis
What is the primary function of electrosurgery in surgery?
Surgical reduction of the free gingiva
What is the purpose of rotary instruments in gingival curettage?
Removing epithelial tissue
What is the recommended method for handling gingival overgrowth?
Cauterizing the gum tissue with electrosurgery
What is the role of kaolin in the retraction paste?
Excipients (fillers)
What is the purpose of the Packer 43 instrument?
To push the cord inside the gingival sulcus
How long should the second cord stay after placement?
8-10 minutes
What indicates good retraction?
Visibility of the finish line with a gap between the cords
What should be avoided to prevent gingival recession?
Repeated use of retraction cords
What is the purpose of vasoconstrictors like epinephrine and norepinephrine?
To restrict blood supply and reduce the size of free gingiva
What effect do astringents like aluminum chloride and ferric sulfate have on the gingival tissue?
Cause transient ischemia and shrink the gingival tissue
Why should acidic solutions used for displacement not be left for too long?
To prevent etching and postoperative sensitivity
How are retraction pastes typically applied into the sulcus?
Injected with a special delivery gun
What should be done to prevent gingival recession when using retraction pastes?
Ensure subsequent dentinal tubule sealing
What is the impact of tissue displacement time on acidic solutions?
Time-dependent, should not be left for too long
What is the potential consequence of leaving acidic solutions used for displacement for too long?
Etching and postoperative sensitivity
What should be avoided to prevent over-retraction of the gingival tissue?
Overpacking the retraction cords
What is the purpose of using astringents in dental fluid control?
To precipitate proteins on the superficial layer of mucosa, making it mechanically stronger and decreasing exudation
Why is rubber dam contraindicated in some patients?
Due to latex allergy
What is the primary purpose of high volume vacuum in dental procedures?
Powerful suction and debris removal
What is the function of Svedopter in dental procedures?
Metal saliva ejector with a tongue guard
What is the purpose of using retraction cords in dental procedures?
To separate the gum from the tooth during impression taking
What is the primary purpose of vasoconstrictors in dental procedures?
To stop bleeding locally
What is the function of Isolite in dental procedures?
Multifunctional device for tongue and cheek retraction, bite block, and saliva removal with a source of light
What is the purpose of using cotton rolls in dental procedures?
Moisture control, cheek and tongue retraction, and appropriate for impression making and cementation
Why should systemic anti-sialagogue drugs be used cautiously?
Due to potential serious effects on general health
What is the purpose of using dry tips in dental procedures?
For parotid gland isolation and moisture absorption
Why is gingival displacement necessary for dental procedures?
For accurate impressions, finish line visibility, restoration of cervical lesions, and to control cement flow
What is the function of retraction sleeves in dental procedures?
Pushing the gum away from the tooth and blanching it to stop bleeding
What is the primary purpose of using a copper band in prosthodontics?
To create a well-defined gingival margin for impression material
What is the primary advantage of knitted gingival retraction cords?
Provide longitudinal elasticity and are resilient
What is the indication for using the double cord technique for gingival retraction?
Impression for deep gingival sulcus
How is improved displacement achieved when using retraction pastes?
By squeezing the paste into sulcus to absorb fluids and expand
What is the function of the double-string retraction cord?
Make it easier to pack the cord by preventing instrument slippage
What is the primary advantage of twisted retraction cords?
Firm and easy to apply
What is the role of the copper ring when placed around a tooth for 24 hours?
To hold amalgam together for a specified period
What is the primary purpose of twisted gingival retraction cords?
Firm and easy to apply
What is the primary purpose of using astringents in dental fluid control?
To absorb gingival fluid and stop bleeding
What is the function of the knitted gingival retraction cords?
Make it easier to apply the instrument
What is the primary advantage of braided gingival retraction cords?
Multistrand and easy to apply
Study Notes
Dental Fluid Control and Gingival Displacement Techniques
- Astringents are used to precipitate proteins on the superficial layer of mucosa, making it mechanically stronger and decreasing exudation.
- Mechanical methods of fluid control include rubber dam, high volume vacuum, saliva ejectors, Svedopter, cotton rolls, absorbents, dry tips, and reflective shields.
- Rubber dam is contraindicated in patients allergic to latex and should not be used for crown preparation with copious irrigation.
- High volume vacuum is used for powerful suction, debris removal, and lip retraction. Saliva ejectors are low volume suction devices used for saliva removal, with limitations in impression and cementation procedures.
- Svedopter is a metal saliva ejector with a tongue guard, while Isolite is a multifunctional device for tongue and cheek retraction, bite block, and saliva removal with a source of light.
- Cotton rolls are used for moisture control, cheek and tongue retraction, and are appropriate for impression making and cementation.
- Reflective shields and dry tips are alternative saliva control methods, with dry tips being useful for parotid gland isolation and moisture absorption.
- Vasoconstrictors and astringents are used to stop bleeding locally, while chemical methods for saliva control include local and systemic options.
- Systemic anti-sialagogue drugs, such as clonidine, can reduce salivary output, but should be used cautiously due to potential serious effects on general health.
- Gingival displacement is necessary for accurate impressions, finish line visibility, restoration of cervical lesions, and to control cement flow.
- Retraction cords are used to separate the gum from the tooth during impression taking, preventing cement from entering the sulcus.
- Cotton and retraction sleeves are techniques for gingival displacement, pushing the gum away from the tooth and blanching it to stop bleeding.
Test your knowledge of dental fluid control and gingival displacement techniques with this quiz. Explore topics such as astringents, rubber dam contraindications, high volume vacuum, saliva ejectors, Svedopter, Isolite, cotton rolls, retraction cords, and systemic anti-sialagogue drugs.
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