INBDE Endodontics Exam Questions
and Answers11
Pulpotomy - ANSWERS-Vital pulp therapy, removal of coronal diseased pulp, traumatic exposure
>72 hours, ZOE in crown, formocresol to attain hemostasis; for primary: vital and restorable
primary tooth with pulp exposure (asymptomatic); may not be indicated on permanent teeth
because they may induced undesirable calcification in canals
Formocresol (Buckley's) - ANSWERS-Endo material, bactericidal and fixative, 19% formaldehyde,
35% cresol, 15% glycerine, 31% water
Pulpectomy - ANSWERS-Nonvital pulp therapy, removal of coronal and radicular dead and dying
pulp, often as temporary pain relief on teeth with irreversible pulpitis until fully RCT can be
done; for primary: nonvital and restorable primary tooth with pulp exposure (asymptomatic);
ZOE in crown, CaOH in root (can be resorbed by underlying permanent tooth)
Extraction - ANSWERS-Nonvital pulp therapy, removal of tooth with dead or dying tooth; for
primary: first molars, nonrestorable, root resorption (symptomatic)
Apexogenesis - ANSWERS-Vital pulp therapy, maintain pulp vitality in order to stimulate root
development and allow the body to make a stronger root, CaOH or MTA placed on healthy or
diseased pulp; includes any indirect pulp cap, direct pulp cap, Cvek, or pulpotomy performed in
*immature permanent tooth*; contraindications: avulsed, nonrestorable, severe horizontal
fracture, and necrotic teeth
Apexification - ANSWERS-Nonvital pulp therapy, disinfection of root canal followed by induction
of an acceptable apical barrier, CaOH or MTA placed at base of canal after dead or dying pulp is
removed; includes any pulpectomy performed in an *immature permanent tooth*
, Pulp - ANSWERS-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 - ANSWERS-Calcification of dentinal tubules in response to slowly advancing
caries or aging
Secondary dentin, reactionary dentin - ANSWERS-(TWO ANSWERS); dentin formed in reaction to
minor damage
Tertiary dentin, reparative dentin - ANSWERS-(TWO ANSWERS); dentin formed to repair major
damage
Pulpal necrosis - ANSWERS-Pulpal response to rapidly advancing caries or other severe damage
Zones - ANSWERS-Histologic ____ of pulp: predentin, odontoblastic layer, cell-free zone of Weil,
cell-rich zone, pulp core
A delta fiber - ANSWERS-Large myelinated afferent nerve, courses coronally through pulp,
dentinal pain, sharp transient "first pain", cold
C fiber - ANSWERS-Small unmyelinated afferent nerve, courses centrally in pulp stroma, pulpitis
pain, dull throbbing "second pain", heat
Hyperalgesia - ANSWERS-Heightened response to pain
Allodynia - ANSWERS-Reduced pain threshold, pain due to stimulus that does not normally
provoke pain; ex: sunburn skin sensitivity
and Answers11
Pulpotomy - ANSWERS-Vital pulp therapy, removal of coronal diseased pulp, traumatic exposure
>72 hours, ZOE in crown, formocresol to attain hemostasis; for primary: vital and restorable
primary tooth with pulp exposure (asymptomatic); may not be indicated on permanent teeth
because they may induced undesirable calcification in canals
Formocresol (Buckley's) - ANSWERS-Endo material, bactericidal and fixative, 19% formaldehyde,
35% cresol, 15% glycerine, 31% water
Pulpectomy - ANSWERS-Nonvital pulp therapy, removal of coronal and radicular dead and dying
pulp, often as temporary pain relief on teeth with irreversible pulpitis until fully RCT can be
done; for primary: nonvital and restorable primary tooth with pulp exposure (asymptomatic);
ZOE in crown, CaOH in root (can be resorbed by underlying permanent tooth)
Extraction - ANSWERS-Nonvital pulp therapy, removal of tooth with dead or dying tooth; for
primary: first molars, nonrestorable, root resorption (symptomatic)
Apexogenesis - ANSWERS-Vital pulp therapy, maintain pulp vitality in order to stimulate root
development and allow the body to make a stronger root, CaOH or MTA placed on healthy or
diseased pulp; includes any indirect pulp cap, direct pulp cap, Cvek, or pulpotomy performed in
*immature permanent tooth*; contraindications: avulsed, nonrestorable, severe horizontal
fracture, and necrotic teeth
Apexification - ANSWERS-Nonvital pulp therapy, disinfection of root canal followed by induction
of an acceptable apical barrier, CaOH or MTA placed at base of canal after dead or dying pulp is
removed; includes any pulpectomy performed in an *immature permanent tooth*
, Pulp - ANSWERS-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 - ANSWERS-Calcification of dentinal tubules in response to slowly advancing
caries or aging
Secondary dentin, reactionary dentin - ANSWERS-(TWO ANSWERS); dentin formed in reaction to
minor damage
Tertiary dentin, reparative dentin - ANSWERS-(TWO ANSWERS); dentin formed to repair major
damage
Pulpal necrosis - ANSWERS-Pulpal response to rapidly advancing caries or other severe damage
Zones - ANSWERS-Histologic ____ of pulp: predentin, odontoblastic layer, cell-free zone of Weil,
cell-rich zone, pulp core
A delta fiber - ANSWERS-Large myelinated afferent nerve, courses coronally through pulp,
dentinal pain, sharp transient "first pain", cold
C fiber - ANSWERS-Small unmyelinated afferent nerve, courses centrally in pulp stroma, pulpitis
pain, dull throbbing "second pain", heat
Hyperalgesia - ANSWERS-Heightened response to pain
Allodynia - ANSWERS-Reduced pain threshold, pain due to stimulus that does not normally
provoke pain; ex: sunburn skin sensitivity
