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

20 Fundamentals of Periodontal Instrumentation & Advanced Root Instrumentation
TABLE 1 -2 . POSITION FOR MANDIBULAR TREATMENT AREAS
15
Fig ure 1 34. Patient Position for the Mandibular Arch.
Body
Chair Back
He ad
He adre st
The p atient ’s feet should be even with or slightly higher than the tip of his or her
nose.
The chair b ack should b e slightly raised above the parallel position at a 15- to
20-degree angle to the f oor (24)
The top of the patient’s head should be even with the upper edge of the head
re st. I necessary, ask the patient to slide up in the chair to assume this position.
Raise the headrest slightly so that the p atient ’s head is in a chin down position, with
the patient’s chin lower than the nose. Patient head position is discussed in greater
detail later in this chapter.