This document discusses submandibular space infections, including their classification, etiology, boundaries, contents, clinical features, diagnosis, and management. Submandibular space infections can be primary, related to teeth, or spread from other areas. They are commonly caused by infections of the lower molars. Clinically, they present as swelling and pain in the angle of the jaw, with trismus. Treatment involves airway protection, hydration, nutrition, treating any underlying conditions, analgesics, antiseptics, antibiotics, and potentially extraction or incision and drainage. Complications can include sialadenitis, Ludwig's angina, and lymphadenitis.

1. SUBMANDIBULAR SPACE
INFECTION
-VAISHNAVI KAMESWARI
III BDS

2. Infection involving the submandibular fascial space

3. CLASSIFICATION
• Primary –Directly related to teeth
• Mandibular
• Suprahyoid

4. ETIOLOGY
1. Infections of Mandibular 2nd & 3rd molars
2. From sublingual or submental spaces

6. COMMUNICATIONS
• Submental Space
• Sublingual Space
• Lateral Pharyngeal Space

7. BOUNDARIES
Submandibular
Space
Superiorly
Mylohyoid Muscle
Anteriorly
Submetal Space
Laterally
Skin
Superficial Fascia
Platysma Muscle
Superficial Layer of
Deep Cervical Fascia
Lower Border of
Mandible
Inferiorly
Anterior Belly of
Digastric Muscle
Posterior belly of
Digastric Muscle
Posteriorly
Hyoid Bone
Medially
Mylohyoid Muscle
Hyoglossus Muscle
Styloglossus Muscle

8. CONTENTS
 Submandibular Salivary Gland
 Proximal portion of Wharton’s Duct
 Submandibular Lymph Nodes
 Facial Artery & its branches- Palatine,
Tonsillar, Glandular, Submental
 Lingual Nerve
 Hypoglossal Nerve
 Facial Vein

9. CLINICAL FEATURES
Most common
Location- Angle of the jaw
Trismus
Swelling- Brawny, Indurated, Soft, Fluctuant
Inability to palpate
Lymphadenopathy

14. DIAGNOSIS
Clinical evaluation
If not obvious, CT is done

15. MANAGEMENT
Airway
Protection

16. Adequate
hydration

17. Rich nutritional
supplements

18. Treatment of pre-
existing disease

19. Treatment
MEDICAL
• Analgesics
* NSAID’s
• Antiseptic Mouth wash
• Antibiotics
*Penicillin
*Amoxicillin
*Ornidazole
*Cephalosporins
SURGICAL
• Extraction
• Incision and
Drainage

21. COMPLICATIONS
Sialadenitis
Ludwig’s Angina
Lymphadenitis