RDA (AMT) key terms

A way of working in which the dentist and the assistant cooperate as a team, passing instruments and managing the mouth so treatment is faster, smoother, and less tiring for the patient.

The small area near the patient's chin where the assistant hands instruments to the dentist and receives them back, kept consistent so the dentist can reach without looking away from the field.

A finger rest, usually the ring finger on a nearby tooth or the alveolar ridge, that stabilizes the operator's hand and gives control and safety while using sharp instruments.

A wide-bore suction tip connected to a strong pump that removes saliva, water, and debris from the mouth during treatment and helps reduce aerosols in the operatory.

A thin strip of metal or plastic placed around a prepared tooth to rebuild the missing wall so restorative material can be packed and shaped before the band is removed.

A slender cord packed gently into the gingival sulcus around a prepared tooth to push tissue aside, control seepage, and expose the margin for an impression or restoration.

A quick-setting, water-based impression material mixed from powder and water and used to record a rough copy of the arch for study models, trays, or provisional appliances.

A stretchy latex or silicone sheet placed over one or several teeth and held by a clamp to isolate the working area from saliva and keep small items out of the throat.

The practice of treating all blood, saliva, and body fluids as potentially infectious and using gloves, barriers, and hand hygiene for every patient, every time.

A device that sterilizes instruments using high-pressure steam at elevated temperature, killing bacteria, viruses, and spores when the correct cycle has been verified.

A test using bacterial spores inside a sterilizer load to confirm that the cycle truly killed microorganisms; results are logged and a failed test triggers recall of that load.

A chemical agent that kills most bacteria, fungi, and many viruses but not necessarily bacterial spores, used on surfaces and equipment that do not enter sterile tissue.

The sequence by which germs spread: a pathogen, a source, a way out, a mode of transmission, a way in, and a susceptible host. Infection control breaks a link in this chain.

Gloves, masks, protective eyewear, and gowns worn to block contact with blood, saliva, aerosols, and chemicals; each item is removed carefully to avoid contaminating the wearer.

A written workplace program describing how the office prevents, reports, and follows up on contact with blood or other infectious material, including vaccination and post-exposure steps.

A standardized document supplied with a hazardous chemical that lists its hazards, safe handling, first aid, and spill response, kept where staff can reach it quickly.

A puncture-resistant, labeled container placed close to the work area for used needles, blades, and other sharp items so that no one handles them by hand.

As Low As Reasonably Achievable: the principle of using the smallest radiation dose that still gives a diagnostic image, through good technique, shielding, and avoiding retakes.

Restricting the x-ray beam with a metal tube or diaphragm so it covers only the area being imaged, which reduces the patient's exposed tissue and improves image contrast.

The aiming cone or tube attached to the x-ray head that directs the beam toward the receptor and sets the source-to-skin distance for the exposure.

An intraoral method in which the receptor sits parallel to the tooth's long axis and the beam strikes both at right angles, giving accurate images with little distortion.

An intraoral method in which the beam is aimed perpendicular to an imaginary line halving the angle between tooth and receptor; placement is easier but images show some distortion.

Describes structures that let x-rays pass through easily and therefore appear dark on a radiograph, such as air, soft tissue, or a cavity.

Shielding worn by the patient during exposure to absorb scattered radiation and protect radiosensitive organs; used unless it would block the area being imaged.

A small badge worn by radiation workers that records cumulative occupational dose so that exposure can be monitored and kept within legal limits.

The set of duties a dental professional is legally permitted to perform at their license level, including which tasks may be delegated and under what level of supervision.

The level of skill and judgment a reasonably competent professional in similar circumstances would provide; falling below it can support a claim of negligence.

A patient's voluntary agreement to treatment after being told the diagnosis, options, risks, benefits, and consequences of refusing, with the discussion documented in the record.

Failure to use the care a reasonable professional would use, resulting in harm; proving it requires showing a duty, a breach of that duty, causation, and damages.

The federal law that sets national standards for protecting individually identifiable health information and gives patients rights over how that information is used and disclosed.

A level of oversight in which the dentist is on the premises, has examined the patient, and is available to check the completed work before the assistant performs a delegated procedure.

A legal duty to notify an agency about suspected child abuse, neglect, or certain communicable diseases, even when doing so means sharing information usually kept private.

A patient's ability to obtain and understand basic health information and use it to make decisions; plain words, pictures, and short sentences help when it is limited.

Asking the patient to explain in their own words what they just learned, so the educator can confirm understanding and correct misunderstandings before the visit ends.

A collaborative conversation style using open questions and reflective listening to help patients find their own reasons for changing a health behavior instead of being lectured.

A structured review of a patient's diet, fluoride exposure, saliva flow, past decay, and habits, used to predict future cavities and plan preventive care.

Giving full attention to a speaker and then reflecting back both the content and the feeling of what was said, to confirm understanding and show respect.