Masseteric artery: blood supply to the masseter
Quick facts
- Definition
- Branch of the maxillary artery that supplies the masseter muscle.
- Course
- Passes through the mandibular notch and enters the muscle from the inside.
- Supplies
- Masseter and neighboring tissues.
- Communication
- With the transverse facial artery and branches of the facial.
- In facial harmonization
- Part of the anatomy of the jaw angle and of toxin in the masseter.
The masseteric artery is a branch of the maxillary artery. It crosses the mandibular notch, the cut-out between the condyle and the coronoid process, and enters the masseter muscle through its deep surface, supplying it.
How does it relate to other arteries?
The masseter also receives supply from branches of the facial artery and from the transverse facial artery, which runs above the muscle. This combination of sources gives the muscle an abundant blood supply and explains why bruises can appear in procedures in this region.
| Artery | Role in the masseter |
|---|---|
| Masseteric | Enters from the inside, through the notch |
| Transverse facial | Supplies the upper part, from the outside |
| Branches of the facial | Supply the lower and anterior edge |
What is the interest in facial harmonization?
Two situations bring the masseter into the clinic: toxin injection to reduce muscle volume and filler of the jawline, near the angle of the mandible. In both, the vascular anatomy and the position of the premasseteric space are part of the reasoning.
Which signs to watch for?
- Bruising or swelling that grows after the injection.
- Disproportionate pain or change in skin color.
- Smile asymmetry, from an effect on neighboring muscles.
Post-procedure instructions and the clinic's contact help to act early.
Also called: masseteric branch of the maxillary.
Frequently asked questions
Why does the masseteric artery matter if toxin in the masseter is intramuscular?
Because the muscle is richly vascularized and the neighboring planes have vessels and nerves. Knowing the blood supply helps respect limits and recognize a bruise or bleeding.