Exam 2; Periodontal-endodontic interrelationships Flashcards
Where are the majority of accessory canals likely to be found
at the apex and in multi-rooted teeth or furcation areas
What are three anatomic connections between the pulp and the PDL
apical foramen
accessory canals
dentinal tubules in the cervical area and loss of cementum
What are some clinical signs of period/endo lesion
pain (spontaneous or on mastication) percussion sensitive mobility radiographic signs other clinical signs; no swelling or increased probing depths
What is retrograde periodontitis
starts at the apex, rather than the marginal gingiva
In this lesion, there is necrotic pulp, in which the disease can extend where
into the periodontal tissues; treat the endo and that should resolve the perio
In this lesion, there is an initial plural disease and necrotic pulp, leading to what
perio that occurs secondarily; a combined lesion; treat endo then perio
In this lesions, the pulp is vital and bacteria accesses what
the pulp via a periodontal lesion, then pulp necroses follows
treat both endo and perio
What is a “true” combined lesion
pulpal and periodontal pathologies initiate independently and coalesce
The pulp has the ability to do this
wall off an infection
True or False
With a primary periodontal lesion, the tooth is still vital
True
True or False
Studies have shown a direct relationship between progression of periodontitis and pulp changes
False; they have failed to confirm this
What are the effects on the pulp regarding periodontal therapy
periodontal instrumentation’ root exposure, cementum (and dentin) removal, dentinal tubule exposure
pulp vitality is unaffected
dentin hypersensitivity
What can result from endodontic therapy on the periodontium
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
