You dont have javascript enabled! Please enable it!

10.02: Lateral jaw/face standardized zones

YOUR ASSIGNMENT FOR THIS LESSON

✅ Step #1: Watch the video presention below. 

✅ Step #2: Click the “Mark Complete” button

The standardized lateral jaw/face zones:

Play Video
The M Zones and Relevant Landmarks

Key structures that may be visible in the lateral jaw/face zones:

ZONEPOSSIBLE KEY ANATOMY*
M1
Scan over entire masseter muscle
Masseter m.
Buccal fat pad
Parotid gland
M2
Antegonial notch
Facial a.
Facial v.
Masseter m.
M3
The intersection of the vertical line from the lateral canthus to the horizontal line from the lateral commissure
Orbicularis oris m.
Modiolus
Buccinator m.
Facial a.
Facial v.
Buccal fat pad
M4
The intersection of the vertical line from the lateral canthus to the horizontal line from labial mental crease
Orbicularis oris m.
DAO m.
DLI m.
Platysma m.
Facial a.
Facial v.
M5
Inferior-posterior mental tubercle
Orbicularis oris m.
DAO m.
DLI m.
Platysma m.

*The structures that can be identified in each zone are subject to variation based on probe footprint, resolution and individual anatomical variability.