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Pulp and Periapical Disease
Pulp and Periapical Disease
76
Pathology
Professional
02/23/2013

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Term
What is the pulp? How does it react to injury?
Definition
-connective tissue
-reacts to injury with inflammatory response
Term
Where does inflammation of the pulp begin? Where does it go?
Definition
inflammation starts in the pulp and travels to the periapical region
Term
Can the pulp swell?
Definition
no, the anatomy of the tooth does not allow for swelling so the only route swelling xan go is though the canal into the periapical area
Term
What may accessory canals lead to?
Definition
inflammation on the lateral portion of the root
Term
What is the primary cause of pulpitis? What are some other causes?
Definition
-primary cause are caries-
-other causes:
cracks in crown or root
periodontal pockets
trauma from blows
bruxism, abrasion, erosion
excessive heat
Term
What are the two types of pulpitis?
Definition
-reversible
-irreversible
Term
In reversible pulpitis, what are the symptoms?
Definition
-asymptomatic unless stimulated
-when stimulated, pain is sharp and intense
Term
What is usually the stimulant that causes pain in reversible pulpitis? How long does the pain last?
Definition
-temperature change(cold)
-pain remains for 5-10 mins
Term
Do changes in your body like laying down have an effect on reversible pulpitis? What is the histology of it?
Definition
-body changes have no effect
-mild inflammatory reaction, dilation of blood vessels, edema, stasis
Term
What is the treatment for reversible pulpitis?
Definition
protect pulp from further stimulation
Term
What is irreversible pulpitis?
Definition
pulpal tissues exhibit acute and chronic inflammatory changes
Term
What is the pain like in irreversible pulpitis?
Definition
-less intense than reversible because of granulation tissue replacing pulp
-spontaneous, not the result of temperature
-pain lasts longer(~20 mins)
-pain may be initiated or worsen when person lays down
Term
Is irreversible pulpitis hard to identify? What is the treatment?
Definition
-hard to identify which tooth it is in
-root canal or extraction is the treatment
Term
What causes chronic hyperplastic pulpitis? Who is it seen in?
Definition
-rare condition seen in children's molars
-result of rampant, acute caries
Term
What happens with chronic hyperplastic pulpitis?
Definition
crown disintegrates before the pulp is overcome by the infection, apical foramen still oen allows for ample blood supply
Term
What does the increased regenerative capacity of children lead to?
Definition
granulation tissue, often protruding out of the crown
Term
When do periapical lesions occur?
Definition
once inflammation is established, spread occurs in one direction
Term
What direction does inflammation spread in periapical lesions?
Definition
through the apex
Term
What do the periapical lesions that form depend on?
Definition
-open or closed pulpitis
-virulence of microorganisms
-extent of sclerosis of dentinal tubules
-host immune response
Term
What are some factors of open chronic pulpitis?
Definition
-low virulence bacteria
-older tooth with sclerotic dentin
-healthy patient=mild, chronic symptoms, granulation tissue forms, dense bone
Term
What are some factors of close, acute pulpitis?
Definition
-virulent bacteria
-young tooth with open dentinal tubules
-rapid, intense destruction extending into adjacent marrow spaces
Term
What are some common lesions to follow pulpitis?
Definition
-periapical granuloma(most common)
-periapical cyst
-periapical abcess
-osteomyelitis
-cellulitis(can cause death)
Term
What is a periapical abscess?
Definition
initial lesion that develops when actue pulpitis extends into adjacent tissue
Term
Is a periapical abscess acute or chronic?
Definition
can occur in an acute episode or chronic
Term
What are the symptoms of a periapical abscess?
Definition
-great pain, elevated temperature, and malaise
-swelling and redness at the root apex
Term
What do you see radiographically with a periapical abscess?
Definition
-arises quickly
-slight widening of the PDL
-indistinct fuzziness of the trabecular pattern
Term
Pus seeks drainage along the path of BLANK.
Definition
least resistance
Term
What is the treatment for a periapical abscess?
Definition
-incise and drain(may need antibiotics)
-if caught late an extraction or root anal may be necessary
Term
What is the tooth like with a periapical abscess? What will a percussion test do?
Definition
extruded in the pocket, percussion test will produce intense pain
Term
When do periapical granuloma's form?
Definition
occur as chronic pulpitis progresses into periapical region
Term
What is the most common lesion that occurs after pulp necrosis?
Definition
periapical granuloma
Term
Is a periapical granuloma, cyst, and abscess radiolocent or radiopaque?
Definition
all radiolucent
Term
What does a periapical granuloma appear like radiographically?
Definition
-PDL space will appear widened
-wll demarticated, oval or rounded radiolucency at the apex
-long standing lesions may show hypercementosis and resoprtion of the root tip
Term
What does a tooth with periapcial granuloma test like? Is their pain?
Definition
-initially my exhibit evidence of vitality when pulp tested, may have a slight response to percussion test
-as it progresses and pulp necrosis is complete, it is painless and there is no response in pulp testing
-pulp not consists of granulation and dense fibrous tissue
Term
What is the treatment for a periapical granuloma?
Definition
1.root canal
2.apioectomy
3.extraction
Term
When do periapical cysts commonly develop?
Definition
-in long-standing untreated periapical granuloma
-epilthelial rests of malassez are stimulated by the low-grade inflammation
Term
How can periapical cysts develop?
Definition
continuously until it destroys large portions of the alveolar bone
Term
What does a periapical cyst appear like radiographically?
Definition
well circumsized uniocular rdioluciency
Term
What is the treatment for a periapical cyst?
Definition
surgical removal, should be microscopically examined to make sure it is not one of the aggressive lesions
Term
What should you do after a root canal?
Definition
root canal, check 6 months later for a possible residual cyst which can form from left over epithelial cells from root
Term
What is osteomyelitis? What is it most commonly caused by?
Definition
an inflammatory process within trabeular bone, most commonly caused by direct extension of an untreated periapical abscess
Term
What else can osteomyeltis be caused by?
Definition
radiation therapy to the head because this causes blood supply yo be compromised
Term
is osteomyelitis actue or chronic?
Definition
can be either
Term
What is the pain like in acute osteomyelitis? What are the symptoms?
Definition
-severe pain
-elevated temp and lymphadenopathy
-drainage results in the reduction of symptoms
Term
What does acute osteomyelitis look like radiographically?
Definition
-no immediate features as exudate progresses through marrow spaces
-areas of bone may appear radiolucient as it progresses
Term
Sequestrum is seen with acute osteomyelitis. What is this?
Definition
represents islands of dead bone surrounded by purulent exudate
Term
What is the treatment for acute osteomyelitis?
Definition
drainage and antibiotics
Term
When does chronic osteomyelisits occur? Is there pain?
Definition
-occurs in response to a low-grade inflammatory process
-little or no pain
Term
What causes chronic osteomyelitis?
Definition
osteocytes often stimulated causing trabicular bone to become denser
Term
What will chronic ostromyelitis look like radiographically?
Definition
molted, radiopaque area refered to as osteoclerosis or sclerosing osteomyelitis
Term
What is garre Osteomyelitis?
Definition
occurs in children as hyperplastic reacion to chronioc osteomyelitis
Term
What happens with chonic osteomyelitis?
Definition
periosteum s stimulated, laying down layers of new bone
Term
What is the treatment for Sclerosing osteomyelitis? Garre?
Definition
Sclerosing-none, dense bone remains
Garre- reverts to normal after source is eliminated
Term
What is cellulitis?
Definition
painful swelling of the tissue of the head and face resulting from the spread of purulent exudate along the fascial planes
Term
What does cellulitis most commonly occur as a result of?
Definition
extension of a periapical abscess into soft tissue
Term
What is a parulis or fistula?
Definition
the site of a exudate draining tract
Term
What do the enzymes from the bacteria do in cellulitis?
Definition
break down fascia surrounding muscle bundles, this allows the exudate to spread
Term
What are some symptoms of cellulitis?
Definition
swelling, pain, elevated temperature, malaise, and lymphadenopathy
Term
What can maxilla involvement of cellulitis cause? What can mandibular involvement cause?
Definition
maxilla-can spread to eye and brain
mandibular-can spread into floor of the mouth, neck, and result in suffocation
Term
What is it called when cellulitis spreads manbibular into floor of the mouth, neck, resulting in suffocation?
Definition
Ludwig angina
Term
What do pulp stones often result from?
Definition
chronic pulpitis
Term
Is there any pain or clinical significance?
Definition
no pain or clinical significance
Term
How do pulp stones appear on a radiograph?
Definition
appear as radiopaque round masses either free or attached to the pulp
Term
What do pulp stones resemble? What is the treatment for pulp stones?
Definition
-resemble secondary dentin
-no treatment necessary
Term
What is external resorption?
Definition
loss of tooth structure that begins on the outside
Term
What causes external resorption? What does it look like on radiographs?
Definition
-often a result of pressure from tumors, cysts, excessive occlusal or mechanical forces or impaction
-can appear as a ragged outline or blunted apex
Term
Where does internal resorption begin?
Definition
within the pulp, dentin resorbes and is thinner than normal
Term
What is seen with internal resorption? What does it look like radiographically?
Definition
-inflamed CT can be seen through
-tooth appears pink
-radiographically the pulp chamber has enlarged
Term
What can happen to a tooth after a root canal?
Definition
tooth becomes brittle after root canal make it more prone to fracture
Term
What is alveolar osteitis commonly called? What is it?
Definition
-dry socket
-is a post operative complication of a tooth extraction
Term
What causes it?
Definition
-clot is lost before healing has occurred
-raw, denuded bone is exposed
Term
What are the signs of a dry socket?
Definition
-very painful
-bad odor and taste
-no fever or swelling(not an infection)
Term
What is the treatment for a dry socket?
Definition
-pain relievers
-gentle irrigation of socket
-medicated dressing
Term
What is pericoronitis?
Definition
inflammation of the mucosa around a partially erupted tooth(usually 3rd molar)
Term
What is the flap of tissue in pericoronitis called?
Definition
operculum
Term
What are the treatments of pericoronitis?
Definition
-irrigation
-antibiotics
-extraction or trim of the operculum
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