Selecting the Mouthpiece
To select the correct Mouthpiece size, measure
the patient' s interincisal opening. If between
sizes, you may select the smaller size.
Mouthpiece Size
Pediatric (PED)
Extra Small (XSM)
Small (SML)
Medium (MED)
Medium Deep Vestibule (MDV)
Large (LRG)
Table 3. Mouthpiece Sizes
The Finger Method
The finger method may also be used to select
the appropriate Mouthpiece size (Figure 2).
For additional assistance, watch a video
demonstration online at Zyris.com.
Figure 2. The Finger Method
8
Approx. Interincisal
Opening
< 30 mm
< 30 mm
30 mm
30-45 mm
30-45 mm
> 45 mm
Pediatric / Extra Small
One Finger (< 30 mm)
Small
Two Fingers (30 mm)
Medium / Medium DV
Three Fingers (30-45 mm)
Large
Four Fingers (> 45 mm)
Cheek Shield
Flexible Isthmus
Tongue Retractor
Locking Barb
Openings
Mouthpiece Sleeve
Figure 3. Mouthpiece
Attaching the Mouthpiece
Slide the Mouthpiece onto the Vacuum
Light Pipe until the two locking barbs
engage. Water or mouthpiece lubricant
may be used to lubricate the inside
surface of the Mouthpiece sleeve to
ease attachment.
Vacuum
Channels
Integrated
Bite Block