Dental Hygiene Theory 1

What is the primary function of a saliva ejector in dental procedures?

It maintains a dry field by controlling saliva and moisture.

How should the operating light be positioned for optimal use?

Shine it on the client’s chest, keep it at arm's length, and follow manufacturer cleaning guidelines.

What anatomical direction does 'apical' refer to?

Toward the root tip of a tooth.

What is the purpose of a modified pen grasp in dental hygiene?

It allows precise control of the working end of an instrument.

What body position should a clinician maintain to avoid musculoskeletal injuries?

Shoulders level, elbows close to the body, forearms parallel to the floor, and wrists aligned with hands.

What are the two types of fulcrums used in dental instrumentation?

Intraoral fulcrum and extraoral fulcrum.

What is the significance of instrument design in dentistry?

Ergonomic design helps prevent musculoskeletal injury during instrumentation.

Why is the alignment of the working end of an instrument important?

It must align parallel with the tooth’s long axis for effective cleaning.

What indicates a proper neck position for a clinician during a procedure?

The head tilt should be between 0 to 15 degrees.

How should the clinician's chair be designed?

It must have a stable, mobile base, provide body support, and be height adjustable.

What does the term 'clinical clock positions' refer to in dentistry?

The positioning of the clinician in relation to the patient, such as 8-12 o'clock for right-handed clinicians.

What is the use of dental mirrors during instrumentation?

They provide indirect vision, retraction, indirect illumination, and transillumination.

What is a double-ended instrument in dentistry?

An instrument with two dissimilar working ends or two mirror image working ends.

What are the potential symptoms of work-related musculoskeletal disorder (WMD)?

Loss of strength, tingling, numbness, and pain.

Why is grip and fit important for gloves in dental practice?

Proper glove fit is crucial to avoid muscle strain and enhance tactile sensitivity.

What does 'neutral clinician position' entail?

Maintaining proper body posture to reduce the risk of musculoskeletal injuries.

What is the cross section of a working end important for?

It determines if the instrument can be used subgingivally or is restricted to supragingival use.