Skin And Soft Tissue Infections

Question 1

Name 4 Bacterial Infections with VF and associated disease

Answer 1

S.Aureus
VF: Panton Valentine Leukocidin Toxin
Angular Chelitis

S.Angiosus
VF: Intermedilysin
Periapical Periodontitis

S.Pyogenes
VF: Superantigens (linked with TSS)
Cellulitis

Anaerobes (Clostridium Welchii)
VF: Alpha Toxin
Gas gangrene or muscle myonecrosis

Question 2

Name a viral infection and its VF and associated Disease

Answer 2

Herpes Simplex
VF: Cell lysis
Herpes Labialis

Question 3

Name a fungal infection and its VF and associated disease

Answer 3

Candida Albicans
VF: Phospholipase
Aerofemitis Candidiasis

Question 4

Name Infections related to epidermis, dermis, hair follicles and subcutaneous fat and associated microbes

Answer 4

Epidermis
- Angular Chelitis - S.Aureas
- Impetigo - S.Pyogenes
- Chicken Pox - Varicella Zoster

Dermis
- Erysipelas - Strep. Pyogenes

Hair Follicles
- Folliculitis
- Carbuncles
- Boils
All caused by S.aureus

Subcutaneous Fat
- Cellulitis - S.Pyogenes
- Severe odontogenic infection - S.Angiosus

Question 5

Name Infections of Deep Tissue

Answer 5

Fascia
- Necrotising Fascia - S.aureus/S.pyogenes

Muscle
- Myonecrosis or Gas Gangrene - Clostridium Welchii

Surgical Wound
- S.Aureus
(Cardinal Signs of infection: Redness, swelling, pain, loss of function)

Bite Wound
- Animals - Pasteurella Multicoda
- Humans - Mixed Anaerobes

Question 6

Common Bacterial Infections in Dentistry

Answer 6

1. Localised Dental Abscess
2. Dental Abscess with systemic signs and symptoms - treat with Pen. V and review 24-48hrs depending on severity
3. Severe Odontogenic Infection (SOI) - Hospital based treatment with IV Ben Pen and Metronidazole