Odontogenic infection Flashcards

1
Q

Aetiology of odontogenic infection

A
  • Caries/periapical infection
  • Periodontal disease
  • Pericoronitis
  • Trauma (e.g. fractured mandible)
  • Post-operative infections
  • Cysts
  • Tumours
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2
Q

Process of infection

A

?

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3
Q

Bacteria involved in odontogenic infections

A

o Streptococcus milleri (65%)
o Peptostreptococcus (65%)
o Other anaerobic streptococci (9%)
o Prevotella species (74%)
o P. gingivalis (17%)
o Fusobacterium species (52%)

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4
Q

What is a facial space and what is its borders?

A

o A facial space is a potential space that exists between facial planes of soft tissue
o Barriers such as muscle, bone, and fascia

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5
Q

What are the primary facial spaces

A
  • Buccal
  • Lingual
  • Sublingual
  • Submental
  • Submandibular
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6
Q

What are the secondary facial spaces

A
  • Lateral pharyngeal
  • Masseteric
  • Submasseteric
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7
Q

Stages of infection

A

o Inoculation stage = very soft, mildly tender, oedematous swelling which is diffuse and jelly-like
o Cellulitis stage = indurated swelling with indistinct borders (diffuse) considered the most acute, painful, and severe presentation of infection. The severity of cellulitis increases as its firmness increases.
o Abscess stage = distinct and well-defined border with central fluctuance, a sign of increasing host reaction to infection. Usually it is slow-growing and less serious than cellulitis, especially if the abscess has drained spontaneously to the external environment.

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