water connection on the dental unit. The water supply
pressure should range from a minimum of 25 psi to a
maximum of 60 psi. Water pressure outside of this
range can cause the equipment to malfunction. Refer
to the manufacturer's instructions for specific
Flush the waterline daily before use to reduce the
bacteria that accumulates overnight. Set the water
flow to maximum and depress the foot switch for 1
minute without an insert in the handpiece. Before use
on each patient, flush the waterline for 30 seconds.
Ultrasonic Tips and Techniques
A wide variety of inserts are available for use with
the ultrasonic scaler. Each insert is designed for a
specific use. A power level is recommended by the
manufacturer for each insert.
Tip selection is based on the type, location, and
amount of calculus deposits present. Larger tips are
effective in removing heavy supragingival calculus
deposits and stains,
where smaller tips used by a
dentist or hvgienist are similar in design to a scaler and
can be used subgingivally. The tips should be dull so
they will not damage the tooth and root surface. The
various tips and their uses are as follows:
Beaver-tail ultrasonic tip (fig. 3-9)Used on the
lingual and facial posterior surfaces to remove very
heavy, supragingival deposits. Use light pressure with
an erasing motion for stain removal and overlapping
strokes for calculus removal. Avoid using the sides or
face of this insert. Use the high power level with this
Figure 3-9.Beaver-tail ultrasonic tip.
Chisel ultrasonic tip (fig. 3-10)Used for
removing supragingival calculus on anterior teeth.
Place the tip against the proximal tooth surface and use a
horizontal stroke to remove the calculus. Set the power
level on high for this insert.
Universal ultrasonic tip (fig. 3-11)The most
commonly used tip for supra and subgingival calculus
deposits in all areas. The universal tip is ideally suited
for finishing after completing heavier scaling
procedures. Use the sides of the insert with only light
pressure, and push or pull strokes. Set the power level
at high for this insert.
Periodontal probe ultrasonic tip (fig. 3-12)Used
to remove subgingival calculus. Used by dentist or
dental hygienist with a horizontal or vertical stroke. Set
the Dower level on medium for this insert.
Figure 3-10.Chisel ultrasonic tip.
Figure 3-11.Universal ultrasonic tip.