Free DANB CDA Exam Flashcards

DANB CDA certification requires RHS, ICE, and GC: Radiation Health and Safety, Infection Control, and General Chairside Assisting.

Local metadata lists 245 total questions: RHS 75, ICE 75, and GC 95. Time management should reflect the size of each component.

Each CDA component requires a minimum scaled score of 400 on a 100-900 scale. Passing one component does not automatically pass the others.

RHS, ICE, and GC must be passed within the required component window noted in local metadata. Track component dates if you take them separately.

For a right-handed operator, the operator's zone is roughly 7-12 o'clock, static zone 12-2, assistant's zone 2-4, and transfer zone 4-7.

The transfer zone is where instruments are exchanged across the patient's chest area. Keep transfers controlled, predictable, and away from the patient's face.

Permanent teeth are numbered 1-32, beginning at the maxillary right third molar and moving around the arches. Primary teeth use letters A-T.

Buccal surfaces face the cheek on posterior teeth. Lingual surfaces face the tongue.

Mesial means toward the midline of the dental arch. Distal means away from the midline.

The occlusal surface is the chewing surface of posterior teeth. Anterior teeth have an incisal edge rather than an occlusal table.

Class I restorations involve pits and fissures, commonly on occlusal surfaces of posterior teeth.

Class II restorations involve proximal surfaces of posterior teeth, often requiring a matrix system for contour and contact.

Review allergies, medications, systemic conditions, surgeries, pregnancy status, and previous dental complications before treatment.

Blood pressure, pulse, respiration, and temperature help screen for medical risk and establish a baseline before dental procedures.

Stop treatment, position the patient safely, maintain airway, monitor vital signs, and alert the dentist. Syncope is commonly linked to anxiety or low blood pressure.

Signs may include itching, rash, wheezing, or anaphylaxis. Use latex-free gloves and supplies for patients or staff with known sensitivity.

Amalgam is a durable metallic restorative material. Handle scrap and waste according to amalgam waste rules; do not dispose of it as ordinary trash.

Composite is tooth-colored and bonds to etched and primed tooth structure. It is technique-sensitive and commonly light-cured in increments.

Glass ionomer bonds chemically to tooth structure and releases fluoride. It is useful for certain liners, bases, and restorations where fluoride release matters.

Alginate is an irreversible hydrocolloid used for preliminary impressions. It should be poured promptly because dimensional stability is limited.

Elastomeric materials provide more accurate final impressions than alginate. They are used when detail and dimensional stability are critical.

Sealants protect pits and fissures, especially on posterior teeth, by blocking plaque and food from deep grooves.

A rubber dam isolates the tooth, improves visibility, controls moisture, and reduces aspiration or swallowing risk during many procedures.

Treat all blood, saliva, and body fluids as potentially infectious. Standard Precautions apply to every patient, not only known high-risk patients.

Requires an exposure control plan, training, PPE, safer sharps practices, hepatitis B vaccination offer, and post-exposure follow-up.

Perform hand hygiene before and after patient care, after glove removal, and whenever hands are contaminated. Gloves do not replace hand hygiene.

Don PPE before exposure risk and remove it to avoid self-contamination. Gloves are usually removed early, and hand hygiene follows removal.

Critical instruments penetrate soft tissue or bone and must be sterilized before reuse.

Semicritical instruments contact mucous membranes but do not penetrate tissue. Sterilize heat-tolerant items whenever possible.

Noncritical items contact intact skin only. They require cleaning and low- or intermediate-level disinfection based on contamination risk.

The safe sequence is receive, clean, package, sterilize, store, and deliver. Dirty and clean areas must stay separated.

Ultrasonic cleaning uses sound waves and solution to remove debris before sterilization. It reduces hand scrubbing and sharps injury risk.

A spore test verifies that sterilization kills resistant microorganisms. It is the strongest routine evidence that a sterilizer cycle works.

A chemical indicator shows exposure to certain sterilization conditions, such as heat or steam, but it does not prove that sterilization killed spores.

Barriers protect hard-to-clean surfaces from contamination. Replace them between patients and disinfect the surface if contamination is suspected.

OSHA requires documentation of sharps injuries to track device type, location, and incident circumstances while protecting employee privacy.

Waterlines can develop biofilm. Follow manufacturer and office protocols for treatment, testing, flushing, and maintenance.

Regulated waste includes items capable of releasing blood or other potentially infectious material, plus contaminated sharps. It requires proper containment and labeling.

ALARA means As Low As Reasonably Achievable. Use selection criteria, proper technique, shielding when indicated, and retakes only when necessary.

Local DANB practice content uses 5 rem, or 50 mSv, per year as the NCRP whole-body occupational maximum permissible dose.

A dosimeter monitors occupational radiation exposure. It should be worn as directed and not left near radiation sources when not in use.

The receptor is placed parallel to the long axis of the tooth and the central ray is directed perpendicular to both. It generally produces less distortion.

The central ray is directed perpendicular to an imaginary line that bisects the angle between the tooth and receptor. Incorrect angulation causes distortion.

Bitewings show crowns of maxillary and mandibular teeth and the alveolar crest. They are useful for detecting interproximal caries and bone level.

A cone cut is an unexposed clear area caused by the x-ray beam not covering the entire receptor. Correct PID alignment prevents it.

Elongation makes teeth appear too long and is caused by insufficient vertical angulation in bisecting technique.

Foreshortening makes teeth appear too short and is caused by excessive vertical angulation.

Overlapped contacts are usually caused by incorrect horizontal angulation. Direct the central ray through the interproximal spaces.

Kilovoltage peak controls beam energy and image contrast. Higher kVp creates more penetrating x-rays and a longer scale of contrast.

Milliamperage and exposure time control the quantity of x-rays produced. Increasing either one increases receptor exposure.