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Infectious agents causing prehension disorders - Coggle Diagram

- - - - Bony structure distension + destruction
    - - Cause
        
        Foreign body Eg. grass awns
        
        Impacted feed
      - Via dental alveoli / damaged mucosa
  - - - Facultative anaerobic
    - - Occasionally A. israelii
  - - - Cytology / gram stain
    - - Physical impairment of function
        
        Inability to chew
        
        Teeth dislodgement
        
        Mandibular fractures
        
        Discharging fistula tracts
- - - - Subgingival flora
        
        Gram +ve: Peptostrepyococcus ;
        
        Gram -ve: Prophyromonas; prevotella; fusobacterium
    - - Periodontal pocket
  - - - --> periodontitis
        
        Irreversible inflammation - tooth supporting structures
        
        Periodontal soft tissue damage
        
        Alveolar bone loss
        
        Predominant gram -ve
      - Reversible gingiva inflammation
      - Predominant gram+ve
  - - - Marked reddened mucous membranes
      - Gum regression from tooth
      - Tartar; foul smelling breath ; loose teeth
  - - - Skull conformation
- - - - Rough fodder
    - - Hard, tumour-like masses
        
        May ulcerate
      - Disseminate to regional lymphatics
        
        Internal organs eg. lung
  - - - Soft tissues- head + neck
        
        "Wooden tongue"
      - Cattle/ sheep
    - - Gram -ve coccobacilli rod ; facultative anaerobic
      - Oxidase positive
      - Oropharnyx + rumen
  - - - Dysphagic
        
        Weight + Production loss
      - Submandibular swelling
        
        Painful. firm tongue
      - External draining tract / sinus
        
        Pale discharge
        
        Thick, viscous pus
        
        Grey-white granules
        
        Bacterial aggregates
        
        Calcium phosphate
    - - Cytology ; Gram stain
        
        Club colonies
      - Culture
        
        Anaerobic conditions
- - - - Mouth, GIT, vagina
  - - - Unestablished flora
    - - Antibiotic usage
    - - AIDS, neoplasia