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OPT Periapical
| Term | Definition |
|---|---|
| mechanical, thermal, chemical and bacterial | 4 types of noxious stimuli on pulp |
| reversible pulpitis | tissue can return to health if stimuli removed, short duration of pain |
| irreversible pulpitis | plural damage beyond point of recovery; severe, lingering, and spontaneous pain |
| chronic hyperplastic pulpitis (pulp polyp) | in young people, pulpits produces granulation tissue that extrudes from the pulp chamber |
| secondary dentin | dentin formed after completion of the crown |
| primary dentin | dentin formed before crown completion |
| physiologic secondary dentin | normal deposition of dentin that shrinks the chambers due to regular aging |
| reparative secondary dentin (irregular/tertiary) | local dentin laid down in response to focal injury |
| calcific metamorphosis | trauma leads to early obliteration of the pulp chamber; yellow clinical crown |
| periapical granuloma (chronic apical periodontitis) | inflamed granulation tissue at the apex of nonvital teeth |
| fibrous (periapical) scar | defect after periapical granuloma that heals with collagen instead of bone |
| periapical cyst (radicular cyst, apical periodontal cyst) | epithelial-lined cavity stimulated by inflammation; looks identical to granuloma on radiographs |
| residual periapical cyst | inflammatory material that is left after an extraction that causes inflammatory cyst |
| lateral radicular cyst | inflammatory cyst next to a root secondary to pulpal infection or periodontal disease |
| periapical abscess | accumulation of acute inflammatory cells at apex of nonvital teeth |
| phoenix abscess | acute exacerbation of a chronic periapical lesion |
| osteomyelitis | infection caused by involvement of adjacent marrow spaces |
| cellulitis | extension of abscess to overlying soft tissue |
| cutaneous sinus | purulent material that drains through the skin |
| parulis (gum boil) | mass of granulation tissue at opening of sinus tract in the oral cavity |
| osteomyelitis | inflammatory process in medullary spaces or cortical bone that is away from the site that is initially infected |
| acute osteomyelitis | occurs when acute inflammatory process spreads through medullary bone spaces; usually short duration |
| sequestrum | necrotic bone fragments |
| involucrum | necrotic bone encased by vital bone |
| chronic osteomyelitis | occurs secondary to defensive response producing granulation tissue that forms a scar in attempt to wall off the infection; requires surgery to remove infected material |
| diffuse sclerosing osteomyelitis | when infectious process directly responsible for bone sclerosis; related to {condensing osteitis} |
| primary chronic osteomyelitis | chronic pain, multifocal bone sclerosis without infection; includes {chronic recurrent multifocal osteomyelitis, CRMO} and {synovitis, acne, pustulosis, hyperostosis, and osteitis, SAPHO} |
| chronic tendoperiostitis | reaction of bone to overuse of masticatory muscles, notching of mandible |
| condensing osteitis | focal areas of bone sclerosis associated with apices of teeth with pulpitis |
| bone scar | residual area of condensing osteitis after resolution of inflammation |
| proliferative periostitis (periostitis ossificans) | periosteal hyperplasia secondary to adjacent inflammation aka Garre osteomyelitis; several rows of reactive bone that expand to onionskin pattern in juveniles |
| alveolar osteitis (dry socket, fibrinolytic alveolitis) | destruction fo initial clot prevents healing after extraction |
Created by:
aharnold
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