Jill Gehrig, Rebecca Sroda, Darlene Saccuzzo - Fundamentals of Periodontal Instrumentation and Advanced Root Instrumentation (2016, LWW) - libgen.lc

24 Fundamentals of Periodontal Instrumentation & Advanced Root Instrumentation
POSITIONING THE INSTRUMENT TRAY
The instrument tray should be positioned within easy reach of the clinician’s dominant
hand as shown in Figure 1-43. Incorrect positioning of the instrument tray as depicted in
Figure 1-44 places unnecessary stress on the clinician.
Fig ure 1-43. Co rre ct Po sitio ning of the Instrume nt Tray.
A. Fro nt/Side Delive ry. Instrument tray positioned correctly for front or side delivery within easy reach
of the clinician’s dominant hand.
B. Re ar De live ry. Instrument tray positioned correctly for rear delivery within easy reach of the
clinician’s dominant hand.
Fig ure 1-44. Inco rre ct Po sitio ning
of Instrument Tray. A combination of
positioning errors is demonstrated in this
photo.
• The p atient’s oral cavity is positioned too
high at midsternum level, instead of at the
clinician’s waist-level.
• The b racket tab le is p ositioned too far from
the clinician. She would have to stretch to
reach the instrument.