Exam 2; Periodontal-endodontic interrelationships Flashcards

1
Q

Where are the majority of accessory canals likely to be found

A

at the apex and in multi-rooted teeth or furcation areas

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2
Q

What are three anatomic connections between the pulp and the PDL

A

apical foramen
accessory canals
dentinal tubules in the cervical area and loss of cementum

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3
Q

What are some clinical signs of period/endo lesion

A
pain (spontaneous or on mastication)
percussion sensitive
mobility
radiographic signs
other clinical signs; no swelling or increased probing depths
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4
Q

What is retrograde periodontitis

A

starts at the apex, rather than the marginal gingiva

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5
Q

In this lesion, there is necrotic pulp, in which the disease can extend where

A

into the periodontal tissues; treat the endo and that should resolve the perio

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6
Q

In this lesion, there is an initial plural disease and necrotic pulp, leading to what

A

perio that occurs secondarily; a combined lesion; treat endo then perio

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7
Q

In this lesions, the pulp is vital and bacteria accesses what

A

the pulp via a periodontal lesion, then pulp necroses follows
treat both endo and perio

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8
Q

What is a “true” combined lesion

A

pulpal and periodontal pathologies initiate independently and coalesce

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9
Q

The pulp has the ability to do this

A

wall off an infection

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10
Q

True or False

With a primary periodontal lesion, the tooth is still vital

A

True

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11
Q

True or False

Studies have shown a direct relationship between progression of periodontitis and pulp changes

A

False; they have failed to confirm this

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12
Q

What are the effects on the pulp regarding periodontal therapy

A

periodontal instrumentation’ root exposure, cementum (and dentin) removal, dentinal tubule exposure
pulp vitality is unaffected
dentin hypersensitivity

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13
Q

What can result from endodontic therapy on the periodontium

A

perforation in the PDL space → new problem
vertical fractures due to the tooth being more brittle after endo therapy; deep pocket in a single site, decent perio in rest of mouth

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