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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Periapical inflammatory lesions
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-a local response of the bone around the apex of a tooth that occurs as a result of necrosis of the pulp or through destruction of the periapical tissues by extensive periodontal disease
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Periapical inflammatory lesions:
epicenter |
-usually at apex of tooth
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Rarifying osteitis: types (3)
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1. abscess: neutrophils collect to form pus (acute inflam)
2. granuloma: infiltrate of lymphocytes, plasma cells, histocytes (chronic inflam) 3. radicular cyst: trapped cell rest of Malassez (developmental cyst) |
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new bone formation w/ in max sinus b/c of PA lesion
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periostitis
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PA lesions:
clinical features (5) |
-Occasional pain
-Mobility and elevation of the involved tooth -Facial swelling -Lymphadenopathy -Fever |
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rarefying osteitis.
PA RL w/ surrounding sclerotic bone |
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rarefying osteitis. Note widened PDL
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radicular cyst. Well-defined corticated border
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rarefying and sclerosing osteitis
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Periapical cemento-osseous dysplasia
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Periapical cemento-osseous dysplasia
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enostosis:
not inflammatory!! extra island of bone w/in bone |
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ACUTE OSTEOMYELITIS:
definition sympt ______ formation distinctive trait |
-Infection of bone and bone marrow
-Pain, swelling of the adjacent soft tissue, fever and lymphadenopathy are noted -Sequestrum formation -onion peel appearance |
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sequestrum
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-necrotic piece of bone separated from the surrounding viable bone
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ACUTE OSTEOMYELITIS:
etiology (2) predisposing conditions (2) |
-Odontogenic infection-most common
-Fractures, gunshot wounds -Decreased host resistance -Decreased vascular supply to bone |
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osteomyelitis
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osteomyelitis
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Chronic Diffuse Sclerosing Osteomyelitis (3)
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-Chronic, proliferative reaction of bone to low-grade irritant or infection
-Repeated episodes of pain, swelling -Sclerosis of bone |
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Chronic Diffuse Osteomyelitis Clinical Features:
symp area appearance border RL/RO |
-asymp periods, painful periods w/ swelling
-diffuse, more common in mandible -duffuse bony enlargement, facial asymmetry, diffuse sclerosis, sequestrum formation -poorly defined -mixed RL/RO |
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Chronic Diffuse Osteomyelitis
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Osteoradionecrosis:
characterized by (3) location demographic dangerous dose min risk dose |
-pain, necrosis, sequestration
-mand -w/in 2 yrs after radiation therapy, mainly in pts w/ teeth - >7500rads - < 6000 rads |
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