ENDO OSCE LATEST 2026 TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
✔✔After RCT on #19, your patient has pain to hot and cold that lingers. What is the best
explanation of these findings?
A. Unfilled lateral canal
B. Overextended gutta percha
C. Pulpitis in another tooth
D. Chronic bruxing
E. Vertical fracture of #19 - ✔✔C. Pulpitis in another tooth
Once you remove the coronal pulp, the tooth is no longer thermally sensitive
✔✔Internal root resorption, a pulp polyp, and irreversible pulpitis share a common
clinical diagnosis of
A. Vital pulp with no periapical extension
B. Vital pulp with periapical extension
C. Degenerating pulp without periapical extension
D. Degenerated pulp with periapical extension
E. Degenerated pulp without periapical extension - ✔✔C. Degenerating pulp without
periapical extension
✔✔An acute apical abscess, chronic apical periodontitis, and phoenix abscess share a
common clinical diagnosis of
A. Vital pulp with no periapical extension
B. Degenerating pulp with periapical extension
C. Degenerated pulp with periapical extension
D. Acutely necrotic pulps
E. First degree endodontic infections - ✔✔C. Degenerated pulp with periapical
extension
✔✔A draining fistula is noted but Al to #4. The tooth has a large MOD alloy, is not
sensitive to percussion, and does not respond to the cold test. Radiographs show a
thickened PDL over the apex of the baccalaureate root. The most probably diagnosis is
A. Phoenix abscess
B. Irreversible pulpitis
C. Chronic apical periodontitis
D. Necrosis
E. Acute periodontal abscess - ✔✔C. Chronic apical periodontitis
✔✔An elderly man complains of pain in the left mandible. He states that the pain seems
to be generalized, radiating down the arm and hand. At times the pain is primarily in the
left side of the chest as much as it is in the lower jaw. The next best step should be to
A. Schedule a comprehensive panoramic film to examine for bone disease
B. Vitality test all teeth in the quadrant to reproduce pain symptoms
, C. Hospitalize patient for a complete examination on suspicion of a heart attack - ✔✔C.
Hospitalize patient for a complete examination on suspicion of a heart attack
✔✔Patient presents with large carious lesion in #20, having pain. Pain comes suddenly,
followed by swelling next to other. Tooth extremely painful to biting, nonvital to ice,
exhibits normal laminated dura radiographically. Most probably diagnosis is
A. Phoenix abscess
B. Acute apical periodontitis
C. Acute apical abscess
D. Chronic apical abscess
E. Necrosis - ✔✔C. Acute apical abscess
✔✔A patient presents with a spontaneously painful #15. Tooth exhibits prolonged
sensitivity to cold, no tenderness to percussion. Radiograph shows a carious exposure
of the pulp and a normal lamina dura. Most probably diagnosis is
A. Hyperplastic pulpitis
B. Acute apical abscess
C. Acute apical periodontitis
D. Irreversible pulpitis
E. Reversible pulpitis - ✔✔D. Irreversible pulpitis
✔✔A patient presents for dental exam. Deep caries noted in distal of #29, tooth
sensitive to cold, heat, sweets, but only for duration of stimulus. No history of
spontaneous pain, periapical bone on radiograph appears normal. Most probable
diagnosis is
A. Acute apical periodontitis
B. Necrosis
C. Irreversible pulpitis
D. Reversible pulpitis
E. Hyperplasticityc pulpitis - ✔✔D. Reversible pulpitis
✔✔A palatal fistula is noted adjacent to #14. Tooth has a 3/4 crown and clinical tests
show #14 not sensitive to percussion, does not respond to ice/heat. Radiographs show
loss of lamina dura over apex of palatal root. Most probably diagnosis is
A. Irreversible pulpitis
B. Phoenix abscess
C. Chronic apical periodontitis
D. Acute apical abscess
E. Necrosis - ✔✔C. Chronic apical periodontitis
✔✔Patient complains of dull pain in area of maxillary right premolar and molar region.
No radiographic evidence of disease/sensitivity to percussion/palpation. All teeth in
quadrant respond weakly to EPT, respond within normal clinical limits to thermal tests.
Next best step is
A. Refer to specialist
SOLUTIONS GRADED A+
✔✔After RCT on #19, your patient has pain to hot and cold that lingers. What is the best
explanation of these findings?
A. Unfilled lateral canal
B. Overextended gutta percha
C. Pulpitis in another tooth
D. Chronic bruxing
E. Vertical fracture of #19 - ✔✔C. Pulpitis in another tooth
Once you remove the coronal pulp, the tooth is no longer thermally sensitive
✔✔Internal root resorption, a pulp polyp, and irreversible pulpitis share a common
clinical diagnosis of
A. Vital pulp with no periapical extension
B. Vital pulp with periapical extension
C. Degenerating pulp without periapical extension
D. Degenerated pulp with periapical extension
E. Degenerated pulp without periapical extension - ✔✔C. Degenerating pulp without
periapical extension
✔✔An acute apical abscess, chronic apical periodontitis, and phoenix abscess share a
common clinical diagnosis of
A. Vital pulp with no periapical extension
B. Degenerating pulp with periapical extension
C. Degenerated pulp with periapical extension
D. Acutely necrotic pulps
E. First degree endodontic infections - ✔✔C. Degenerated pulp with periapical
extension
✔✔A draining fistula is noted but Al to #4. The tooth has a large MOD alloy, is not
sensitive to percussion, and does not respond to the cold test. Radiographs show a
thickened PDL over the apex of the baccalaureate root. The most probably diagnosis is
A. Phoenix abscess
B. Irreversible pulpitis
C. Chronic apical periodontitis
D. Necrosis
E. Acute periodontal abscess - ✔✔C. Chronic apical periodontitis
✔✔An elderly man complains of pain in the left mandible. He states that the pain seems
to be generalized, radiating down the arm and hand. At times the pain is primarily in the
left side of the chest as much as it is in the lower jaw. The next best step should be to
A. Schedule a comprehensive panoramic film to examine for bone disease
B. Vitality test all teeth in the quadrant to reproduce pain symptoms
, C. Hospitalize patient for a complete examination on suspicion of a heart attack - ✔✔C.
Hospitalize patient for a complete examination on suspicion of a heart attack
✔✔Patient presents with large carious lesion in #20, having pain. Pain comes suddenly,
followed by swelling next to other. Tooth extremely painful to biting, nonvital to ice,
exhibits normal laminated dura radiographically. Most probably diagnosis is
A. Phoenix abscess
B. Acute apical periodontitis
C. Acute apical abscess
D. Chronic apical abscess
E. Necrosis - ✔✔C. Acute apical abscess
✔✔A patient presents with a spontaneously painful #15. Tooth exhibits prolonged
sensitivity to cold, no tenderness to percussion. Radiograph shows a carious exposure
of the pulp and a normal lamina dura. Most probably diagnosis is
A. Hyperplastic pulpitis
B. Acute apical abscess
C. Acute apical periodontitis
D. Irreversible pulpitis
E. Reversible pulpitis - ✔✔D. Irreversible pulpitis
✔✔A patient presents for dental exam. Deep caries noted in distal of #29, tooth
sensitive to cold, heat, sweets, but only for duration of stimulus. No history of
spontaneous pain, periapical bone on radiograph appears normal. Most probable
diagnosis is
A. Acute apical periodontitis
B. Necrosis
C. Irreversible pulpitis
D. Reversible pulpitis
E. Hyperplasticityc pulpitis - ✔✔D. Reversible pulpitis
✔✔A palatal fistula is noted adjacent to #14. Tooth has a 3/4 crown and clinical tests
show #14 not sensitive to percussion, does not respond to ice/heat. Radiographs show
loss of lamina dura over apex of palatal root. Most probably diagnosis is
A. Irreversible pulpitis
B. Phoenix abscess
C. Chronic apical periodontitis
D. Acute apical abscess
E. Necrosis - ✔✔C. Chronic apical periodontitis
✔✔Patient complains of dull pain in area of maxillary right premolar and molar region.
No radiographic evidence of disease/sensitivity to percussion/palpation. All teeth in
quadrant respond weakly to EPT, respond within normal clinical limits to thermal tests.
Next best step is
A. Refer to specialist
