Oral Micro Flashcards
Infectious agent that causes thrush
Candida albicans
Group of patients most likely to get thrush.
Immunocompromised (HIV, diabetes, malignancy, antibiotics)
Diagnosis and treatment for candida?
Sabouraud Dextrose agar growth.
(also gram (+) with germ tubes)
Treat with fluconazole
Two major conditions caused by HSV-1.
Mouth: cold sores
Fingers: herpetic whitlow
What do HSV-1 lesions look like and how it is treated?
Dew on rose petal lesions
Acyclovir
Infectious agent that causes Herpangina
Coxsackie Virus A
How does herpangina present?
Mostly in children especially in daycare setting. Vesicle lesions on soft palate and uvula causing sore throat and odynophagia.
Causative agent of Hand Foot and Mouth disease.
Coxsackie Virus A16
-painful lesions on fingers, feet, and soft palate.
What is the predominant caries-causing organism?
Strep. mutans
What are serious late sequelae of untreated dental infections?
Osteomyelitis, endocarditis
What is periodontal disease?
Disease involving the surrounding support structures of the teeth.
What organisms are involved in Acute Necrotizing Ulcerative Gingivitis (Trench Mouth)?
Spirochetes
- Treponema denticola
- Borrelia gingivalis
- PROS (pathogen related oral spirochetes)
Gram (-) anaerobe
Prevotella Intermedia
Causative agent in Localized Aggressive Peridontitis.
Aggregatibacter actinomycetemcomitans
AGGREsive-AGGREgatibacter
How is Aggregatibacter a. diagnosed?
Gram (-) coccobacillus
Growth on chocolate agar, blood agar
How can the anaerobes:
Bacteroides, Fusobacterium, Porphyromonas, Prevotella be differentiated?
(Gram (-) anaerobic rods)
Bacteroides: grows quickly on laked blood agar.
Prevotella: takes a week to grow on laked blood agar, saccharolytic, fluoresces dark red then brown
Porphyromonas: asaccharolytic, grows gray then turns black.
Fusobacterium: filamentous shape on gram stain.
