Protozoa

Question 1

Name 3 Protozoa of the oral cavity

Answer 1

• trichomonas tenax
• trichomonas vaginalis
• entamoeba gingivalis

Question 2

Disease caused by trichomonas tenax

Answer 2

Broncho-pulmonary infections

Question 3

Characteristics of trichomonas tenax infn x4

Answer 3

• associated with poor oral hygiene
• presence of mitochondrial, microaerotolerant flagellate
• saprophyte ie dead organic matter
• cysteine proteases and metalloproteases

Question 4

Occurrence of trichomonas tenax

Answer 4

Malnourished
Immunodeficiency
2% in healthy individuals, 21% in periodontal disease

Question 5

Treatment of trichomonas tenax

Answer 5

Metronidazole (single 2g oral dose/500mg twice daily for 7 days)

Question 6

Treatment of trichomonas vaginalis

Answer 6

Metronidazole (single 2g oral dose/500mg twice daily for 7 days)

Question 7

Disease caused by trichomonas vaginalis x6

Answer 7

• cervical neoplasia
• STDs
• atypical pelvic inflammatory disease
• infertility
• urethritis, prostitis, epididymitis
• cervical/prostate cancer

Question 8

Disease caused by entamoeba Gingivalis

Answer 8

• progressive periodontal disease in immuno compromised
• pulmonary abscess
• acute osteomyelitis of the mandible

Question 9

Characteristics of entamoeba Gingivalis infection x3

Answer 9

• presence of mitochondrial, micro-aerotolerant flagellate
• no mitochondria
• ingest microbes/leucocytes and dead organic matter

Question 10

Occurrence of entamoeba Gingivalis

Answer 10

27-69% carriage in periodontal disease

0% in health

Question 11

Characteristics of Protozoa x6

Answer 11

• Single celled eukaryotes
• lack cell wall
• compartmentalisation present
• mitochondria - present/absent
• chloroplasts present
• forms slime molds (many single cell organisms working tgt like a complex organism)