Endodontics - INBDE
Pulp - answer Contains loose fibrous connective tissue with nerves, blood vessels, and
lymphatics, fibroblasts, odontoblasts (secrete primary and secondary dentin),
undifferentiated mesenchymal cells (secrete tertiary dentin); surrounded by hard tissue,
lacks collateral circulation
Sclerotic dentin - answer Calcification of dentinal tubules in response to slowly
advancing caries or aging
Secondary dentin, reactionary dentin - answer(TWO ANSWERS); dentin formed in
reaction to minor damage
Tertiary dentin, reparative dentin - answer(TWO ANSWERS); dentin formed to repair
major damage
Pulpal necrosis - answer Pulpal response to rapidly advancing caries or other severe
damage
Zones - answer Histologic ____ of pulp: presenting, odontoblastic layer, cell-free zone
of Weil, cell-rich zone, pulp core
A delta fiber - answerLarge myelinated afferent nerve, courses coronally through pulp,
dentinal pain, sharp transient "first pain", cold
C fiber - answerSmall unmyelinated afferent nerve, courses centrally in pulp stroma,
pulpitis pain, dull throbbing "second pain", heat
Hyperalgesia - answerHeightened response to pain
Allodynia - answerReduced pain threshold, pain due to stimulus that does not normally
provoke pain; ex: sunburn skin sensitivity
Mandibular molar - answerPreauricular pain often refers from ____ teeth since both
share V3 innervation
Normal pulp - answerPulpal diagnosis, asymptomatic, mild to moderate transient
response to thermal and electrical stimuli
Electric pulp test - answerLeast reliable pulp vitality testing, indicates if there are vital
sensory fibers present in the pulp but does not provide information about vascular
supply to pulp; false positives and negatives; contraindicated if cardiac pacemaker
, Reversible pulpitis - answerPulpal diagnosis, symptomatic, thermal stimulus causes
quick, sharp, hypersensitive, transient response; no complaints of spontaneous pain,
caused by an irritant that affects the pulp; symptom, not a disease
Symptomatic irreversible pulpitis - answerPulpal diagnosis, symptomatic, pulp has been
irreversibly damaged beyond repair, characterized by spontaneous intermittent or
continuous pain, thermal stimulus causes lingering pain, postural changes may
exacerbate pain; radiographs are generally insufficient
Asymptomatic irreversible pulpitis - answerPulpal diagnosis, asymptomatic (nerves
responding normally), microscopically similar to symptomatic irreversible pulpitis but no
clinical symptoms
Pulp necrosis - answerPulpal diagnosis, usually asymptomatic but not always, can be
partial or total, due to long-term interruption of blood supply to pulp, crown discoloration
may occur in anterior teeth
Normal apical tissue - answerPeriapical diagnosis, asymptomatic, no pain on
percussion or palpation
Symptomatic apical periodontitis - answerPeriapical diagnosis, painful inflammation
around apex, characterized by painful percussion and intense throbbing pain, localized
inflammatory infiltrate within the PDL
Asymptomatic apical periodontitis - answerPeriapical diagnosis, asymptomatic, apical
radiolucency, confirmation of pulpal necrosis
Acute apical abcess - answerPeriapical diagnosis, rapid swelling, severe pain, purulent
exudate (liquefaction necrosis) around apex
Chronic apical abscess - answerPeriapical diagnosis, draining sinus tract usually
without discomfort, can use gutta percha point to track source of infection
Access preparation - answerMost important technical aspect of RCT, conservation of
tooth structure, deroof chamber to expose pulp horns and orifices, straight-line access
to orifice and apex
Incisor - answerAccess preparation for ____ (tooth type): on lingual surface, triangular
access
Canine - answerAccess preparation for ____ (tooth type): on lingual surface, ovoid in
shape
Maxillary first - answerPremolar most likely to have two roots
Pulp - answer Contains loose fibrous connective tissue with nerves, blood vessels, and
lymphatics, fibroblasts, odontoblasts (secrete primary and secondary dentin),
undifferentiated mesenchymal cells (secrete tertiary dentin); surrounded by hard tissue,
lacks collateral circulation
Sclerotic dentin - answer Calcification of dentinal tubules in response to slowly
advancing caries or aging
Secondary dentin, reactionary dentin - answer(TWO ANSWERS); dentin formed in
reaction to minor damage
Tertiary dentin, reparative dentin - answer(TWO ANSWERS); dentin formed to repair
major damage
Pulpal necrosis - answer Pulpal response to rapidly advancing caries or other severe
damage
Zones - answer Histologic ____ of pulp: presenting, odontoblastic layer, cell-free zone
of Weil, cell-rich zone, pulp core
A delta fiber - answerLarge myelinated afferent nerve, courses coronally through pulp,
dentinal pain, sharp transient "first pain", cold
C fiber - answerSmall unmyelinated afferent nerve, courses centrally in pulp stroma,
pulpitis pain, dull throbbing "second pain", heat
Hyperalgesia - answerHeightened response to pain
Allodynia - answerReduced pain threshold, pain due to stimulus that does not normally
provoke pain; ex: sunburn skin sensitivity
Mandibular molar - answerPreauricular pain often refers from ____ teeth since both
share V3 innervation
Normal pulp - answerPulpal diagnosis, asymptomatic, mild to moderate transient
response to thermal and electrical stimuli
Electric pulp test - answerLeast reliable pulp vitality testing, indicates if there are vital
sensory fibers present in the pulp but does not provide information about vascular
supply to pulp; false positives and negatives; contraindicated if cardiac pacemaker
, Reversible pulpitis - answerPulpal diagnosis, symptomatic, thermal stimulus causes
quick, sharp, hypersensitive, transient response; no complaints of spontaneous pain,
caused by an irritant that affects the pulp; symptom, not a disease
Symptomatic irreversible pulpitis - answerPulpal diagnosis, symptomatic, pulp has been
irreversibly damaged beyond repair, characterized by spontaneous intermittent or
continuous pain, thermal stimulus causes lingering pain, postural changes may
exacerbate pain; radiographs are generally insufficient
Asymptomatic irreversible pulpitis - answerPulpal diagnosis, asymptomatic (nerves
responding normally), microscopically similar to symptomatic irreversible pulpitis but no
clinical symptoms
Pulp necrosis - answerPulpal diagnosis, usually asymptomatic but not always, can be
partial or total, due to long-term interruption of blood supply to pulp, crown discoloration
may occur in anterior teeth
Normal apical tissue - answerPeriapical diagnosis, asymptomatic, no pain on
percussion or palpation
Symptomatic apical periodontitis - answerPeriapical diagnosis, painful inflammation
around apex, characterized by painful percussion and intense throbbing pain, localized
inflammatory infiltrate within the PDL
Asymptomatic apical periodontitis - answerPeriapical diagnosis, asymptomatic, apical
radiolucency, confirmation of pulpal necrosis
Acute apical abcess - answerPeriapical diagnosis, rapid swelling, severe pain, purulent
exudate (liquefaction necrosis) around apex
Chronic apical abscess - answerPeriapical diagnosis, draining sinus tract usually
without discomfort, can use gutta percha point to track source of infection
Access preparation - answerMost important technical aspect of RCT, conservation of
tooth structure, deroof chamber to expose pulp horns and orifices, straight-line access
to orifice and apex
Incisor - answerAccess preparation for ____ (tooth type): on lingual surface, triangular
access
Canine - answerAccess preparation for ____ (tooth type): on lingual surface, ovoid in
shape
Maxillary first - answerPremolar most likely to have two roots
