Dental Machines Lab 5
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Questions and Answers

What is the primary reason for keeping the power control setting low on an ultrasonic scaler?

  • To reduce battery consumption
  • To ensure a consistent water flow
  • Because ultrasonic scalers produce heat (correct)
  • To prevent ultrasonic waves from being ineffective

    • Which component is NOT typically included in a dental chart?

  • Doctor name
  • Patient information
  • Surgical history of the staff (correct)
  • Allergies

    • What should be done first when preparing to use a dental machine such as a Cavitron?

  • Insert a sterile tip into the handpiece
  • Adjust the power control to maximum setting
  • Rotate the selector switch to 'polish'
  • Connect and turn on the water supply (correct)

    • What is the main function of a periodontal probe in dental practice?

    <p>To measure periodontal health</p> Signup and view all the answers

    What feature of a dental chart contributes to it being a legal document?

    <p>Reflects procedures performed</p> Signup and view all the answers

    Which of the following must be done after inserting a sterile tip into the Cavitron?

    <p>Rotate in a clockwise direction and tighten by hand</p> Signup and view all the answers

    Which of the following components is essential in charting for documenting a patient's allergies?

    <p>Medical history</p> Signup and view all the answers

    What type of dental machine requires an external water source to prevent thermal damage?

    <p>Micromotor for polish</p> Signup and view all the answers

    Which statement accurately describes one of the reasons for performing dental charting?

    <p>It can justify treatments performed</p> Signup and view all the answers

    Which option describes an incorrect setup for a compressor unit in dental practice?

    <p>High-speed handpiece without water</p> Signup and view all the answers

    What is the primary use of explorers in dental practice?

    <p>To explore the tooth for irregularities</p> Signup and view all the answers

    What is the maximum depth measured by the University of North Carolina probe?

    <p>15 mm</p> Signup and view all the answers

    What is the primary function of periodontal probes?

    <p>To measure periodontal pocket depth</p> Signup and view all the answers

    What is the best angle to use an ultrasonic probe when cleaning teeth?

    <p>0-15 degrees</p> Signup and view all the answers

    What are scalers primarily used for in dental care?

    <p>Supragingival scaling</p> Signup and view all the answers

    Which statement correctly differentiates a scaler from a curette?

    <p>Curettes can be used above and beneath the gumline, scalers cannot.</p> Signup and view all the answers

    What is the purpose of polishing teeth after scaling?

    <p>To smooth etched enamel and remove plaque</p> Signup and view all the answers

    What characteristic distinguishes the straight tip of calculus removal forceps?

    <p>It is used to engage the margin of calculus near the gingival margin.</p> Signup and view all the answers

    Which option describes the use of a shepherd's hook in dental practice?

    <p>For checking for caries and tooth defects</p> Signup and view all the answers

    What is the recommended care for scalers and curettes?

    <p>Sterilize with heat and store in a dry environment.</p> Signup and view all the answers

    What must be ensured before using a dental machine such as a Cavitron?

    <p>The water is connected and turned on</p> Signup and view all the answers

    Which statement correctly describes the function of the periodontal probe?

    <p>It evaluates periodontal health</p> Signup and view all the answers

    What happens when the power control on an ultrasonic scaler is set too high?

    <p>Heat generation can cause patient discomfort</p> Signup and view all the answers

    Which component is essential information to include in a dental chart?

    <p>Client information</p> Signup and view all the answers

    What should the water control setting be adjusted to before using the Cavitron?

    <p>Maximum setting for optimal function</p> Signup and view all the answers

    Which of the following is considered a legal document in dental practice?

    <p>Dental chart</p> Signup and view all the answers

    What is one of the reasons for documenting procedures in a dental chart?

    <p>To justify treatments performed</p> Signup and view all the answers

    What is a characteristic of the low-speed handpiece in dental practice?

    <p>It operates without the use of water</p> Signup and view all the answers

    Which of the following components is NOT necessary for charting a patient's allergies?

    <p>Procedure date</p> Signup and view all the answers

    What is the first step in preparing a Cavitron before use?

    <p>Ensure the water is flowing</p> Signup and view all the answers

    What is the primary use of periodontal probes?

    <p>To measure depth of gingival sulcus and pockets</p> Signup and view all the answers

    Which type of instrument is primarily used for supragingival scaling?

    <p>Scaler</p> Signup and view all the answers

    What is the maximum depth that a Williams markings probe can measure?

    <p>10mm</p> Signup and view all the answers

    What distinguishes a curette from a scaler?

    <p>Curettes can be used above and below the gumline</p> Signup and view all the answers

    What is the shape of the end of an explorer?

    <p>Slender wire with a sharp point</p> Signup and view all the answers

    Which of the following is NOT a measurement unit used by periodontal probes?

    <p>Inches</p> Signup and view all the answers

    How are scalers limited in their use compared to curettes?

    <p>Scalers should only be used above the gumline</p> Signup and view all the answers

    What is the purpose of polishing teeth after scaling?

    <p>To smooth etched enamel and remove plaque</p> Signup and view all the answers

    What conditions can be determined using a periodontal probe?

    <p>Gingival inflammation and tooth mobility</p> Signup and view all the answers

    What is the best angle to use on the tooth when cleaning with an ultrasonic probe?

    <p>0-15 degrees</p> Signup and view all the answers

    Study Notes

    Dental Machines

    • Micromotor requires frequent sharpening
    • Micromotor can be used for tooth sectioning prior to extraction
    • Micromotor requires an external water source to avoid thermal damage due to the lack of internal water
    • Compressed air units can have a high speed handpiece with water, a low speed handpiece without water, and an airway water syringe.
    • Compressed air units can be equipped with satellite compressors
    • Cavitron (ultrasonic scaler) requires water flow to the dental machine

    Cavitron Operation

    • Cavitron selector switch has a red LED light indicating power
    • Cavitron power control knob should be set to minimum during initial setup
    • Cavitron water control should be set to maximum while holding the handpiece over a sink to ensure water flow
    • A sterile tip should be inserted and tightened into the nosecone before use
    • Cavitron power and water controls should be adjusted for a fine mist at the tip
    • Cavitron power should be kept low to minimize heat generation

    Dental Charting

    • Dental Chart is a legal and essential part of a dental procedure
    • Dental Chart documents patient information, pathology, and procedure details
    • Dental Chart provides legal documentation, evidence of pathology, and justification for treatment
    • Periodontal probe is the most important instrument for evaluating periodontal health
    • Dental Chart Components:
      • Clinic name
      • Doctor name
      • Client information
      • Patient Information:
        • Name
        • Color
        • Weight
        • Age
        • Sex
        • Breed
        • Allergies
      • History
      • Exam:
        • Skull type
        • Occlusion
        • Dental abnormalities
        • Indexes
      • Documentation
    • Types of charting systems:
      • Anatomical

    Dental Instruments

    • Explorers are slender wire-like instruments with a sharp point and a Shepherd's hook
    • Explorers are used to check for tooth irregularities, caries, enamel/dentin defects, fractures, tooth resorption, and subgingival calculus
    • Periodontal probes are round or flat instruments with graduated blunt ends for measurement
    • Periodontal probes measure gingival sulcus depth, periodontal pocket depth, and determine gingival inflammation, furcation, and tooth mobility
    • Periodontal probes measure up to 10mm (Williams marking), 15mm (UNC probe), or 11.5mm (some probes)
    • Periodontal probes make measurements in millimeters
    • Recommended probe measurements for dogs: 0-3mm
    • Recommended probe measurements for cats: 0-1mm
    • Shepherd's hook is a common explorer used for identifying dental irregularities
    • Calculus removal forceps remove large calculus deposits from the tooth surface
    • Calculus removal forceps have a straight tip and a curved tip for engaging calculus near the gingival margin
    • Scalers are used for supragingival scaling (above the gumline) and cleaning interdental spaces
    • Scalers are limited to supragingival cleaning because they can cause trauma to the gingiva
    • Scalers have three parts: handle, shank, and a working end with cutting edges
    • The optimal angle for using an ultrasonic probe for cleaning is 0-15 degrees
    • Polishing teeth after scaling removes plaque and smoothes etched enamel
    • Curettes are more slender than scalers and have a round tip
    • Curettes can be used above and below the gumline and should not be used as scalers
    • Scalers have sharp cutting edges and are only to be used above the gumline

    Dental Instruments

    • Explorers: Slender, wire-like instruments with a sharp point and a Shepherd's hook used to examine teeth for irregularities.
    • Periodontal probes: Graduated instruments used to measure gingival sulcus and periodontal pocket depth. Available with different lengths:
      • Williams markings up to 10 mm
      • University of North Carolina up to 15 mm
      • Some probes up to 11.5 mm
      • Measure in increments of millimeters
      • Dogs: 0-3 mm
      • Cats: 0-1 mm
    • Shepherd's hook: A common type of explorer used to check for:
      • Caries
      • Enamel or dentin defects
      • Fractures
      • Tooth resorption
      • Subgingival calculus
    • Calculus removal forceps: Remove large calculus deposits from the tooth surface.
      • One end with a straight tip
      • Other end with a curved tip
    • Scalers: Used for supragingival scaling (above the gumline) and in interdental spaces.
      • Cannot be used below the gumline as it can cause gingival trauma
      • Three parts: handle, shank, and working end with cutting edges
    • Curettes: More slender than scalers with a round tip.
      • Can be used above and below the gumline
      • Should not be used as a scaler
    • Recommended care for curettes and scalers: Frequent sharpening

    Dental Machine & Air Unit

    • Ultrasonic scaler: Uses high-frequency vibrations to remove calculus.
      • Important to keep the power control at a lower setting to prevent heat generation.
      • Steps for using:
        • Connect water source and turn it on.
        • Rotate the selector switch to "scaler" (red LED light should illuminate).
        • Adjust power control to minimum setting.
        • With no tip installed, set the water control to maximum and test water flow over a sink.
        • Insert a sterile tip into the nosecone and tighten securely.
        • Adjust power control and water control for a fine mist.

    Dental Charting

    • Dental chart documents information about the patient, pathology, and procedure, serving as a legal document and a vital part of a dental procedure.
    • Importance of charting:
      • Legal documentation
      • Provides evidence for pathology identified.
      • Justifies the treatments performed.
    • Periodontal probe is the most important instrument used for assessing periodontal health.
    • Components of the Dental Chart:
      • Clinic name
      • Doctor name
      • Client information
      • Patient information: name, color, weight, age, sex, breed, allergies
      • History
      • Exam: skull type, occlusion, dental abnormalities, indexes, etc.
      • Documentation
    • Two types of charting systems:
      • Anatomical:

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    Description

    This quiz covers essential information on dental machines, focusing on the micromotor and Cavitron operation. Learn about their functions, maintenance requirements, and operational setup. Perfect for dental hygiene students and professionals seeking to reinforce their knowledge of dental equipment.

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